G.723.1 Vocoder for Video Phones, Audio/Video Conferencing and Media Gateways

Toronto, Ontario Canada (PressExposure) October 15, 2012 -- Toronto, Canada - GAO Research Inc. ( http://www.GAOResearch.com ) has announced the release of its G.723.1 Vocoder which is ideal for applications such as video phones, audio/video conferencing and media gateways. This G.723.1 vocoder includes Silence Compression Scheme and Voice Activity Detection (VAD).

GAO's G.723.1 dual rate speech coder performs compression and decompression of 8 kHz speech signals with a compression ratio of up to 12:1. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for 5.3 kbps and 6.3 kbps channels respectively. G.723.1 software has switchable transmission rates over 5.3 or 6.3 kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU-T standard. The higher bit rate has greater quality; the lower bit rate gives good quality and provides system designers with additional flexibility.

The ITU-T G.723.1 standard specifies a coded representation that can be used for compressing the speech or other audio signal components of multimedia services at a very low bit rate as part of the overall H.324 family of standards. It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for the high rate coder is Multi-pulse Maximum Likelihood Quantization (MP-MLQ) and for the low rate coder is Algebraic-Code-Excited Linear-Prediction (ACELP).

This G.711 Vocoder Belongs to GAO's family of Speech Vocoders. This line of vocoders complies with the ITU-T Vocoder standards for speech processing software and audio processing codecs. This line also includes G.722 Vocoder which Complies with the ITU-T H.320 standard for video conferencing, G.711 vocoder which provides a compression /decompression (companding) algorithm to deliver precision transmissions of encoded speech signals sampled at the rate of 8 kHz and G.728 LD-CELP Vocoder which implements the low delay code-excited linear prediction (LD-CELP) speech compression technique specified in the ITU-T standard and provides approximately 4 kHz of speech bandwidth.

About GAO Research Inc.
GAO Research Inc. ( http://www.GAOResearch.com ) is a world-renowned provider of high quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for a wide range of DSPs and microprocessors.

About GAO Research Inc.

GAO Research Inc. ( http://www.GAOResearch.com ) is a recognized international leading provider of communications software to telecom and electronics companies and provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Press Release Source: http://PressExposure.com/PR/GAO_Research_Inc..html

Press Release Submitted On: October 15, 2012 at 1:51 am
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