
1) Audio codec
Found on
https://www.crosswordclues.com/clue/truespeech

Truespeech is a proprietary audio codec produced by the DSP Group. It is designed for encoding voice data at low bitrates, and to be embedded into DSP chips. True speech has been integrated into Windows Media Player in older versions of Windows, but no longer supported since Windows 7. It is also the format used by the voice chat features of Yahoo...
Found on
http://en.wikipedia.org/wiki/Truespeech

Software that compresses speech down to as little as 1/40th its original size. Regular speech files are normally large, causing Web pages to load slowly; TrueSpeech compression allows faster, easier transfer.
Found on
http://www.encyclo.co.uk/local/20660
No exact match found.