An MP3 file can also be constructed at higher or lower bit rates, with higher or lower resulting quality. An MP3 file that is created using the mid-range bit rate setting of 128 kbit/s will result in a file that is typically about 1/10th the size of the CD file created from the original audio source. The use in MP3 of a lossy compression algorithm is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio for most listeners, but is not considered high fidelity audio by audiophiles. The group was formed by several teams of engineers and was approved as an ISO/IEC standard in 1991. MP3 is an audio-specific format that was designed by the Moving Picture Experts Group. It is a common audio format for consumer audio storage, as well as a de facto standard encoding for the transfer and playback of music on digital audio players. MPEG-1 Audio Layer 3, more commonly referred to as MP3, is a digital audio encoding format using a form of lossy data compression. The most common sound file format in use at the moment is the MP3 standard. These programs are either packaged in commercial products, offered as freeware or are utilities that can be accessed in programs such as MS Word (e/g. Or they can review study notes or literature by using audio files created by themselves, teachers, aides, note takers lecturers, peers or siblings.Ĭomputer applications and utilities provide opportunities to translate text to audio. Students can also record ideas, thoughts and opinions in voice and have it translated to text (using programs such as Dragon NaturallySpeaking). Translating text to audio is meaningful and practical as the user can then decide when wand where to use the technology to advantage. The ability to read and comprehend is taken for granted yet there are so many students who have difficulty. Reading and listening to emails, web chat, web sites, blogs, Wikis, Twitter and RSS feeds and other online content is liberating and opens up a world of opportunities for engagement and access to social groups, news, current affairs as well as leisure options. If they are able to listen to words, phrases, sentence paragraphs or whole documents, they can function with a degree of independence. Reading and accessing text from paper based sources and electronically from computers, portable readers and now mobile phones can present many different problems and difficulties for some students. The creation and mechanics in writing or typing text are complex. Students with poor reading, dyslexia and new arrivals struggling with English (or any other language being used) were disenfranchised and had little or no means to read and decode information. In earlier decades, notes were written on paper, flash cards, blackboards or whiteboards for students to copy or transcribe. Traditionally educators and trainers in schools, higher education and work places have used and distributed published materials or provided books and study notes in printed hard copy format. Students of any age or ability who cannot read a language, or comprehend text are at a distinct disadvantage when studying, researching or following directions and instructions. The quality of the audio is dependent on the program that records it, the environment in which it is captured, the synthesised voice use, the format in which it is stored and the player and speakers used in playback. Listening to audio, or listening whilst reading the same text, can dramatically improve access to text-based data. Palm, HP iPaqs) and even digital cameras. These include MP3 players, such as iPods, MP3 players, mobile phones, Portable Digital Assistants (e.g. doc fileĬreating sound files from recordings and from electronic or scanned text allows users to listen to information on a computer or on a more portable device. Creating voice files using Text-to-Audio Programsĭownload this document as an MS Word.
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