Beginning HTML5 Media by Silvia Pfeiffer & Tom Green

Author:Silvia Pfeiffer & Tom Green
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Clear Audio

This is a feature that is not alternative content for the hearing-impaired, but a more generally applicable feature that improves the usability of audio content. It is commonly accepted that speech is the most important part of an audio track, since it conveys the most information. In modern multitrack content, speech is sometimes provided as a separate track apart from the sound environment. A good example would be karaoke music content, but clear audio content can also easily be provided for professionally developed video content, such as movies, animations, or TV series.

Many users have problems understanding the speech in a mixed audio track. But, when the speech is provided in a separate track, it is possible to allow increasing the volume of the speech track independently of the rest of the audio tracks, thus rendering “clearer audio”—that is, more comprehensible speech.

Technically, this can only be realized if there is a separate speech track available, either as a separate in-band track or as a separate external resource.

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