WebMay 28, 2015 · The subjective tests were carried out using the MUSHRA test methodology that is defined in ITU-R Recommendation BS.1534.1. 18 18. Rec.ITU-R.BS.1534-1: … Wideband audio, also known as wideband voice or HD voice, is high definition voice quality for telephony audio, contrasted with standard digital telephony "toll quality". It extends the frequency range of audio signals transmitted over telephone lines, resulting in higher quality speech. The range … See more In 1987, the International Telecommunication Union (ITU) standardized a version of wideband audio known as G.722. Radio broadcasters began using G.722 over Integrated Services Digital Network See more VoIP As business telephone systems have adopted VoIP technology, support for wideband audio … See more • The Effect of Bandwidth on Speech Intelligibility Archived 2013-06-06 at the Wayback Machine – Polycom technical White Paper • VoIP transitioning to High Definition Voice (2007) … See more

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