Knowledge Based Peer to Peer Journal
Literature Review
CHAPTER SUMMARY:
Screen readers are software programmed for people with vision impairment and/or learning disabilities36 that convert screen content into a format that is accessible to the individual, such as braille, speech, or both. Screen readers can be used on laptops, desktop computers, and mobile devices. They contribute to the participation of people with disabilities in society and encourage them to live an independent life and fully benefit from their rights regarding health, social benefits, or employment. Different models of screen readers exist: software built into the operating system, open source and free stand-alone software, and commercial paid subscription stand-alone software. Open source screen readers are recognized as being equal in quality to commercial screen readers for common tasks such as web navigating, word processing, etc. Commercial screen readers remain the preferred choice for many employers as they offer more customization options and support for specific applications. Access to screen readers in LMICs is hindered by the following barriers, among others: low awareness of the existence and benefits of screen readers, limited availability of screen readers in local languages, lack of training, lack of accessible content, and unaffordable prices for commercial screen readers. In order to increase access to screen readers, the following objectives are proposed:
1) adopt accessibility standards on public government websites and applications;
2) develop text-to-speech synthesizers in local languages;
3) establish (sub-)national programmed to enable price agreements with commercial screen reader suppliers; and 4) train people with disabilities in use of digital AT.
Chapter 1 : Screen Readers
Screen readers convert information from a desktop computer, laptop, or mobile into a format that is accessible for people with vision impairment or learning disabilities. Screen readers are software programmed for people with vision impairment and/or learning disabilities that convert screen content into a format that is accessible to the individual, such as braille, speech, or both.37 Screen readers use text-to-speech synthesizer software that converts the screen elements into speech. A refreshable braille display – a hardware device that displays a braille representation of the text – can additionally be combined with a screen reader to make the digital ecosystem even more accessible.38 Screen readers can be used on laptops, desktop computers, tablets, and smart feature and smartphones. On laptops and desktop computers, users navigate the content with keyboard commands, either stepping
from object to object or by jumping between different types of components, like headings or links. On smartphones, screen reader users move their finger on the screen, either swiping left and right to move to the next or previous item (swipe navigation) or getting what is under their finger read to them (touch navigation).
A few years ago, commercial software such as JAWS and SuperNova were the most widely used screen readers worldwide.45 Open source software like NVDA offered lower quality and fewer features.46 In recent years, open source screen readers have addressed most of their limitations and are now recognized as being of equal quality in terms of: • FEATURES PARITY: important parameters in the quality of screen readers include the number of tasks that can be performed and user-friendliness of the software. Examples include user friendliness to install and navigate the software, or ability to perform tasks in word processing, spreadsheet, presentation, e-mail, web browsing, video-conferencing, or PDF applications. Initial versions of NVDA could perform fewer tasks compared to commercial screen readers like JAWS. Over the past few years, experts note that NVDA’s features have gradually become as good as or even better than JAWS for some tasks related to web browsing or working with spreadsheets. • MAINTENANCE OF THE CODE: sustainability of small-scale open source software has been a concern as the maintenance of its code is often left to the associated software development community. There is however little to no concern among developers and users that NVDA will stop being maintained. While open source, NVDA is organized as a company and sells customized NVDA packages at nominal prices to support operations.
Chapter 1.2 Disability Education Acts: Focus on 508 Compliance
Access to print content is also an important issue for people with visual impairment and/or learning disabilities. To tackle this, the Digital Accessible Information System (DAISY) consortium has created technical standards for accessible books. The DAISY standards apply to digital talking books which offer a flexible reading experience for people who are ‘print disabled’, offering a significantly enhanced reading experience.56 For example, users can search, place bookmarks, navigate line by line, or regulate the speaking speed.57 Books in DAISY format have been adopted by large accessible libraries such as the Japanese Association of Libraries for the Blind, the US National Library Service for the Blind and Print Disabled, the South African Library for the Blind or the Bibliotheca Alexandrina in Egypt.58,59 The Global Digital Library (https://digitallibrary.io/) is another initiative to support availability of books in accessible formats, including video books in sign languages.’
For many children, technology can equalize the playing field to improve communication, learning and increase interaction with children in the general education classroom and in their communities. A child’s into the education service system will begin with “an assessment, including an assessment for assistive technology.”.(~-12 1996 Education Omnibus Bill). Several pieces of federal legislation touch on the provision of AT services and devices for children with disabilities.
1. INDIVIDUALS WITH DISABILITIES EDUCATION ACT OF 1990, IDEA, P.L. 101-476. This act guarantees a child the right to a free appropriate public education (FAPE) in the least restrictive environment (LRE), which includes the provision of special education and related services without charge to the family, in conformity within the IEP (assistive technology is a part of this mandate). Specifically a student’s Assistive technology needs must be considered within the context of education related goals. 8 Assistive technology needs must be identified on an individualized basis. Identification of assistive technology needs must involve family members and a multidisciplinary team. Family or other IEP team members can request additional evaluations or an independent assessment to determine assistive technology needs. Cost or unavailability of equipment cannot be used as rationale for denying assistive technology devices or services. 8 If included in the IEP, assistive technology devices and services must be provided at no cost to the family. Families have the right to appeal the denial of assistive technology devices or services.
2. Other Legislation Rehabilitation ACT OF 1973, Section 504. Requires that public schools make reasonable accommodations for all students with disabilities when the disability has a significant impact on one or more major life activities. AMERICANS WITH Disabilities ACT OF 1990, ADA, P.L. 101-336. Civil rights legislation mandating non-discrimination of persons with disabilities. Earkt Childhood Special Education Part H of P.L. 99-457. Technology related services may be furnished by any provider that meets state and federal standards.
Accessible Design Benefits Everyone
• Most of us encounter accessibility features originally created for people with disabilities on a daily basis.
• Each of these turns out to have applications that also make things easier for people without disabilities.
• Examples include the following:
• Closed captions for the deaf on television programs
• Curb cutouts and ramps for wheelchair users
• “Talking books” for the blind
Electronic content produced at HHS must be made accessible to all users regardless of disability
. • Electronic content includes
: – Electronic documents
– Web sites and pages
– Applications
– Multimedia
– Agency-wide emails
What is Section 508?
• Section 508 is part of a 1998 amendment to the Rehabilitation Act of 1973.
• It requires all Federal electronic content to be accessible.
• The U.S. Access Board is an independent Federal agency which develops and maintains standards that must be met to achieve 508 compliance.
• The most applicable standards for electronic content are:
– 1194.21 Software applications and operating systems
– 1194.22 Web-based intranet and internet information and applications
– 1194.24 Video and multimedia products
The specification and coordination of technology related services are implemented through the Individualized Family Service Plan (IFSP).
3. Office of Special Education Programs and Services Policy Letters OSEPS POLICY LETTERS-written to interpret federal mandates. In 1990 a letter from Judy A. Schrag indicates the right to have assistive technology included in the IEP. It is the school district’s obligation to provide assistive technology if a student has an identified need. Decisions are made on a case by-case basis. Assistive technology can be provided as special education, related services or as supplementary aids and services.
1.5 Assistive Technology
For the past 30 years, federal laws such as the 1988 Tech Act and the Individuals with Disabilities Education Act (1990) have guided us in the delivery of Assistive Technology (AT) devices and services. AT was first addressed by Congress in the 1998 Assistive Technology Act.
The act did not specifically address AT in education, but was intended to apply to persons of all ages in the general population who have disabilities. AT became more specifically incorporated in law as part of special education IDEA amendments that linked it to AT consideration within the IEP process. Each of these laws has implications for the activities of AT Teams. For the purposes of this paper, the terms “AT specialist” and “AT service provider” are used interchangeably and refer to those individuals who have a leadership role in designing services that support the use of AT in classrooms. As identified in this article, “AT teams” may be a loosely formed group of AT specialists or a formal multidisciplinary team assigned to manage a range of AT services. The term “school teams” refers to staff interacting with students throughout the school day. A variety of professional development organizations and individual AT specialists have influenced the field of AT as it developed and matured.
The Education Tech Points framework (Bowser & Reed, 2012) was first published in 1995 and provided a structure for AT services in educational settings. The SETT (Student-Environment-Tasks-Tools) framework for addressing AT concerns was presented at the Closing the Gap (CTG) conference in 1995 (Zabala, 1995).
The Wisconsin Assistive Technology Initiative (Reed, 1994) defined essential elements of a comprehensive AT assessment in a way that was accessible to school providers and educational teams. CTG and other major professional development organizations, such as the Assistive Technology Industry Association (ATIA), the California State University, Northridge (CSUN) Assistive Technology Conference, and the Innovations in Special Education Technology (ISET) division of the Council for Exceptional Children, have, for many decades, sponsored professional development opportunities on a wide variety of AT topics.
State-sponsored AT projects in many states provide technical assistance, professional development, referral information and resources to local and regional AT providers in education settings. The Quality Indicators of Assistive Technology (QIAT) consortium has published eight sets of “quality indicators” to guide excellence in AT service delivery (The QIAT Leadership Team, 2015). These and many others have served to guide the development and provision of AT services to date.
Assistive Technology for Academic Skills Technology could play an important and significant role, in many cases, in helping students with disabilities overcome the academic difficulties that they face and helping them to develop their academic skills as well. Cullen, Richards, and Frank (2008) conducted a study to determine whether computer software would help students with disabilities improve their performance in writing. A multiple baseline design was used to study seven fifth grade students with mild disabilities in three phases: baseline, intervention using a talking word processor, and intervention using word prediction software in conjunction with a talking word processor. In the first week (Baseline) students handwrote all writing samples with no accommodations; in the next three weeks (Intervention one) Students used Write: Out loud, a talking word processor for all writing samples; in the last three weeks (Intervention two) students used Co:Writer, a word prediction software, in conjunction with Write: Out
loud for all writing samples. The results showed that five students out of seven in the study improved the number of words produced in the two intervention phases, while the number of words produced decreased with the other two students in both intervention phases compared with the baseline phase. The group mean indicated that there was an improvement in the number of words produced. There were improvements in the number of misspelled words across phases, both individually and in the group mean. In general, the results showed that the impact on most of the seven students was positive. Another example of the important role that technology can play in helping students to overcome their difficulties with academic skills can be found in the study conducted by Bouck, Doughty, Flanagan, Szwed, and Bassette (2010) to examine how effective a pentop computer (a FLYPen) and the writing software (specifically designed for the FLYPen) was in assisting students with disabilities in writing. This tool “resembles a typical pen, larger in size and includes a slot at the top where a software cartridge is inserted. When using special paper created for the FLYPen, the pentop computer produces voice output to provide directions, prompts, reinforcement, and hints to students for various activities” (p. 36). In this study, three high school students were chosen based on the following criteria:
1) high school students receiving special education services between 15 and 18 years old;
2) students with a mild intellectual disability or learning disability;
3) students having difficulty in written expression;
4) students who had received special education services since early elementary school. The results showed that all students experienced initial gains in the quality of written expression while using the FLYPen. They concluded that technology-enhanced procedural facilitators not only can benefit the quality and quantity of written expression in students with mild disabilities, but it can also enhance students ability to plan their writing and help them complete these tasks more independently.
For people who struggle to read text, technology can be a lifeline. An audiobook, for example, allows them to experience a story they might not be able to access with a traditional book. These assistive technology (AT) tools for reading are inexpensive and easy to find. But with so many tools out there, it’s not always easy to know which ones to use
While various aspects of reading have been examined in relationship to the challenges that students with dyslexia face, comprehension is the goal of reading and is imperative for school success. Reading comprehension involves constructing and extracting meaning from the text (Snow, 2010). Text comprehension draws upon oral language skills such as vocabulary, grammar, discourse and metalinguistic aptitude, which are necessary for both listening and reading comprehension (Cutting & Scarborough, 2006; Ukrainetz, 2015). Recent literature has also highlighted the importance of intact executive functions for reading comprehension (Sesma, Mahone, Levine, Eason, & Cutting, 2009). Executive function is a broad term that involves higher-level cognitive abilities that are necessary for independent goal-directed behaviors such as holding and manipulating information in working memory, as well as planning and organizing complex tasks (Denckla, 1989). Increased working memory capacity is linked to improved reading comprehension because of sufficient cognitive resources to simultaneously decode and extract the meaning of words, while recalling previously read information (Sesma et al., 2009). Additionally, Cutting, Materek, Cole, Levine and Mahone (2009) found that participants with specific reading comprehension deficits showed significant weakness in executive function.
Reading fluency, which includes word recognition and decoding, is a fundamental bridge to reading comprehension (Breznitz, 2006; Pikulski & Chard, 2005). Speed in word recognition is one factor that facilitates extracting meaning from text (Torgesen, Rashotte, & Alexander, 2001). Variations in processing speed often determine differences in a student’s word recognition (Breznitz, 2006). Literature suggests that efficient processing of orthographic, phonological, and semantic information promotes automatic word recognition and ultimately comprehension (Bowers & Wolf, 1993; Goswami, 1999). Thus, reducing the burden of decoding through instructional aids may be useful in supporting comprehension.
The potential value of compensatory strategies such as TTS for individuals with reading difficulties is based on learning theories such as Cognitive Load Theory (Pollock, Chandler & Sweller, 2002) and Automaticity Theory (LaBerge & Samuels, 1974). The Cognitive Load Theory purports that learning is best facilitated when information is presented in a way that is efficiently processed in working memory (Chandler & Sweller, 1991). This is especially pertinent to reading because it is a complex task with heavy demands on working memory (Swanson & Siegel, 2001). When word recognition is not automatic, the reading process is slow, placing heavy demands on memory (LaBerge & Samuels, 1974). Slow and labored reading diminishes the ability to address the higher-order processes necessary for comprehending text (Samuels, 1997). TTS may help reduce cognitive load and increase automaticity for struggling readers. Students using TTS have demonstrated gains in volume of text read while decreasing fatigue and stress (Hecker, Burns, Elkind, Elkind, & Katz, 2002; Hodapp & Rachow, 2010); slower readers have increased reading rate (Elkind, 1998; Sorrell, Bell, & McCallum, 2007); students with learning disabilities have bolstered their reading comprehension (Elkind, Cohen, & Murray, 1993). A longitudinal study of middle school special education students showed a significant positive relationship between use of TTS, reading rate, and comprehension scores (Hodapp & Rachow, 2010). In contrast, Schmitt, Hale, McCallum and Mauck (2010) found no difference between the ability of 25 middle school remedial readers (ages 11 to 15 years) to correctly answer factual and inferential comprehension questions with and without TTS. Despite the lack of information regarding the specific populations who benefit from TTS (Alper & Raharinirina, 2006), Strangman and Dalton (2005) suggest that students with weak word recognition and stronger comprehension skills may benefit more from TTS than students who are weak in both decoding and comprehension.
- Text to Speech
Text-to-Speech Design This study employed a repeated measures design wherein each subject read the same six passages which were randomized across six conditions: (a) Silent Reading, (b) Reading Aloud, (c) Listening Only with digitized speech and no text, (d) reading with the use of TTS with No Highlighting, (e) reading with the use of TTS with Highlighting and (f) reading with the use of TTS at a Rapid Rate with Highlighting. The independent variable was the six experimental conditions. The dependent variable was the number of accurately answered comprehension questions following each passage. TTS reading materials. The students read six expository passages derived from the Level 2 Reading Comprehension Cards, (Lingui-Systems, 2007). The mean Flesch-Kincaid Readability Level for the six passages was 4.8 with a range of 4.5 to 5.3 (see Appendix A). All six passages contained 7 to 8 lines of text with a mean of 110 words and a range of 102 to 127 words per passage. Passage length was limited to accommodate the visual field appropriate for collecting eye-tracking data for the larger study. A linguist experienced in child language development reviewed and made modifications to the passages for consistency of total length, sentence complexity, word frequency and cohesion. TTS software. The six passages were downloaded into TTS software (e.g. Kurzweil 3000TM) on a laptop computer. The Listen Only, TTS with No Highlighting, and TTS with Highlighting conditions were presented at a reading rate set at 150 words per minute (Hasbrouck & Tindal, 2006). The rate for the TTS at a Rapid Rate with Highlighting was set at 225 words per minute, with a 50% increase in rate, as determined to be most comfortable without distorting the synthesized voice. All passages were visually displayed on the computer screen for each condition, except for the Listen Only condition. During this condition, the participant was shown an X on the computer screen while listening to the passage read with a digitized voice.
Students with Print Disabilities For many students with disabilities, the limitations of print raises barriers to access, and therefore to learning. Following the passage of the IDEA in 1997 and more recent reauthorizations, it has become essential that all students have access to the general curriculum, and thus to print materials. Some students cannot see the words or images on a page, cannot hold a book or turn its pages, cannot decode the text or comprehend the sentence structure. Students may experience different challenges, and may require different supports to obtain meaning from books. For each of them however, there is a common barrier – the centuries-old fixed format of the printed book. Many students with disabilities presently do not have access to the printed material they need. There are several reasons for that. In some cases, the problem is technical – schools may not have the technology they need to properly provide accessible versions to students, even if they had such versions. In other cases, the problem is lack of knowledge – many teachers and schools do not understand the issue of access or the potential solutions that are available (“NIMAS at CAST: About NIMAS”, 2006).
Educators usually select technology for two reasons. They select programs that remediate specific skills through individualized and/or repetitive practice or they select programs that compensate for a student’s disability. Deciding when to provide remedial supports and when to provide assistive technology accommodations is critical when designing a student’s instructional plan. As many reading researchers have suggested, the focus in the early grades is on learning to read, and the focus in the intermediate and upper grades becomes reading to learn. Some of the research shows that using technology for compensatory intervention actually also provides remedial benefits (Silver-Pacuilla, H., Ruedel K. & Mistrett, S. p. 8). While assistive technology by definition is not instructional, sometimes the support that assistive technology provides enables the student to further develop his or her skills.
What is Assistive Technology for reading support? Assistive technology that provides reading support includes devices and software that help an individual read text (books, textbooks, websites) in various ways beyond reading traditional text. AT for reading includes hardware such as laptops, tablets, or dedicated devices for e-text or audio text. It also includes software that will convert text to digital text and read it aloud with a synthesized voice. AT reading support software is sometimes called literacy suite software. Text-to speech is the term to describe software that reads digital text aloud. When do I need to use AT for reading? Depending on the needs of the individual, AT for reading may be used in any environment where the individual needs to read traditional printed text such as a book, textbook, newspaper, community event program, or website content. Other individuals may switch between reading printed text and using AT to play or read the text aloud. Alternating between these methods is useful when the individual may need to take a break from reading traditionally printed text.
When do I need to use AT for reading? Depending on the needs of the individual, AT for reading may be used in any environment where the individual needs to read traditional printed text such as a book, textbook, newspaper, community event program, or website content. Other individuals may switch between reading printed text and using AT to play or read the text aloud. Alternating between these methods is useful when the individual may need to take a break from reading traditionally printed text.
Individuals may struggle with reading traditionally printed materials due to a physical limitation, visual impairment, or cognitive need, such as dyslexia. A physical disability may prevent a person from holding a book or turning the pages. For individuals who are blind or have low vision, traditional printed text is difficult to read. Individuals may have an identified disability, such as dyslexia, and cannot decode text or comprehend sentence structure. Others may be “unidentified” struggling readers. Individuals with language learning disabilities often struggle with making meaningful connections with printed text, as do English Language Learners (ELLs) and individuals with cognitive disabilities. Why? Having a print disability is a common need but using assistive technology to interact with printed text opens a whole new world to many struggling readers. Technology has many advantages, but careful consideration is needed to meet an individual’s unmet needs in the community, educational, and employment setting
Chapter 3:
OCR accuracy, in this context, refers to the accuracy of OCR technology in correctly identifying and extracting text from images. Additional performance evaluations have been conducted to assess the system’s robustness across varied document characteristics. The system was tested with fonts including Arial, Times New Roman, Calibri, and cursive scripts, revealing an average recognition accuracy above 92% for standard fonts, while cursive and decorative styles resulted in a slightly reduced accuracy of around 86%, indicating moderate adaptability. Language compatibility tests were also carried out using English, Hindi (Devanagari script), and Tamil, leveraging Tesseract’s multilingual support. The system maintained above 90% accuracy in English and Hindi, while Tamil documents exhibited an 82% recognition rate due to script complexity. Moreover, documents with multi-column layouts, tables, and mixed content were evaluated. While
single-column formats achieved optimal text alignment and speech output, multi-column and irregular layouts introduced segmentation challenges, reducing efficiency by approximately 12%. These evaluations underline the system’s broad applicability while identifying potential areas for refinement in handling complex formats and regional languages. OCR is a technology that converts various types of documents—such as scanned paper files, PDFs, or images captured by digital cameras—into editable and searchable digital text. OCR accuracy refers to the system’s effectiveness in correctly recognizing and extracting textual content from these images. It is typically expressed as a percentage, representing the ratio of accurately identified words to the total number of words present in the image. For instance, if the OCR system processes an image containing 100 words and successfully recognizes 95 of them, the OCR accuracy would be 95%
3.2 PDF dealing with Accessibility / OCR(Optical Character Recognition) inside Adobe DC Readers.
What Can Create an Accessibility Problem?
When the ASPA 508 Team does a review, they pay particular attention to:
• Images
• Captions
• Color
• Data Tables
• Dynamic Content/Interactivity
• Forms
• Navigational Elements/Links
Accessible PDFs contain a back end tag structure similar to HTML so content can be correctly interpreted by AT.
• Tagging a PDF can be tedious and requires Acrobat Pro or expensive third-party software.
• Having a well-structured source file does NOT necessarily translate into an accessible PDF, but does save time when tagging it. Accessible PDFs contain a back end tag structure similar to HTML so content can be correctly interpreted by AT.
• Tagging a PDF can be tedious and requires Acrobat Pro or expensive third-party software.
• Having a well-structured source file does NOT necessarily translate into an accessible PDF, but does save time when tagging it.
The option to have a PDF file read aloud offers numerous advantages. It’s also an easy feature to master.
Perhaps you need your documents read aloud to you because reading print text is too difficult. Or maybe you’ve just downloaded a PDF file of a book to listen to, but you really want to savor the story and language slowly. Adobe Reader enables you to have your files read aloud and even customize the experience by setting the narrator’s voice and choosing the pace of the reading to best suit your needs.
How to have a PDF read aloud.
Having a PDF read aloud can increase accessibility if you are visually impaired or have difficulty reading the text. Listening to a PDF can also help you multitask. Use Adobe’s free Acrobat
simply follow these steps to have Acrobat Reader read PDF aloud:
Open Reader and navigate to the document page you want to have read aloud.
From the top-left menu, click View, then Read Out Loud.
You can choose to have the whole document read aloud or just the page you’re on.
Select either Read to End of Document or Read This Page Only, respectively.
The reading will start at the page you’re currently on, even if you select Read to End of Document. To start at the beginning, navigate to the first page.
At any point, you can also choose from several options to customize the experience of having your PDFs read out loud:
To pause or stop the read-out-loud function, go back to the Read Out Loud selection from the View dropdown menu and select either option.
To choose your preferred reader voice, go to the top-right menu and click Edit, then Preferences. Choose Reading. Remove the checkmark on Use Default Voice, and finally choose the narration voice you like from the dropdown list.
To adjust the pace of the reading, either increase the Words Per Minute count or lower it, depending on your needs.
Now you can have your PDF read aloud with your unique preference selections.
Why PDF accessibility matters.
An accessible PDF is a document that is universally easy to use and meets established accessibility standards. It enables most people to view, read, or interact with your document. Since your audience may include people whose vision, hearing, mobility, or cognition is impaired, your document must support assistive technology like:
Screen readers
Text-to-speech programs
Braille displays
And more
The more accessible your PDF is, for example, the easier it is to hear on a mobile device. Or view it with a screen magnifier. Or fill it out without a keyboard. Actually, this increased ease of use benefits everyone in your audience, regardless of their various abilities.
So, let’s dive in further — what is PDF accessibility, and how can you apply it in your next document?
Differences between a regular PDF and an accessible PDF.
Accessible PDFs, as opposed to regular PDFs, prioritize inclusivity and provide a better user experience for individuals with disabilities. Here are the key differences:
Structure. Accessible PDFs have a proper organization with headings, paragraphs, and tables, aiding screen readers in understanding the content flow. Regular PDFs lack this structure.
Textual accessibility. Accessible PDFs ensure the text is accessible using techniques like text recognition and alternative text for images. Regular PDFs may consist of static images or scanned documents.
Navigation. Accessible PDFs include bookmarks, a table of contents, and descriptive hyperlinks for easy navigation. Regular PDFs can be challenging to navigate with screen readers.
Color and contrast. Accessible PDFs prioritize color contrast and provide alternatives for color-coded information. Regular PDFs may have low contrast or rely solely on color.
Forms and interactive elements. Accessible PDFs have properly labeled and accessible form fields and interactive elements. Regular PDFs often lack proper labeling.
Metadata and language specification. Accessible PDFs include accurate metadata and specify the document’s language. Regular PDFs may lack metadata or language specification.
Benefits of text to speech for PDFs.
Text to speech can be a useful tool for a variety of people. People with vision loss can access a PDF with text to speech. Anyone who prefers to listen to text, whether it’s in an effort to avoid eyestrain or improve workflow, can use Acrobat Reader’s simple PDF text to speech feature. Text to speech can also help you multitask.