G.723.1 Dual Rate Speech Coder for Video Phones, AudioVideo Conferencing and Media Gateways

Toronto, Canada – GAO Research Corporation. (world wide web.GAOResearch.com) is providing its G.723.1 dual rate speech coder which is fantastic for programs for example video phones, audio/interactive video and media gateways. This G.723.1 vocoder includes Silence Compression Plan and Voice Activity Recognition (VAD). It works compression and decompression of 8 kHz speech signals having a compression ratio as high as 12:1. It encodes 16-bit PCM samples into 16-bit code-words yielding 10 or 12 code-words per 240 sample frames for five.3 killerbytes per second and 6.3 killerbytes per second channels correspondingly. GAO’s G.723.1 software has switchable transmission rates over 5.3 or 6.3 killerbytes per second channels supplying 4 kHz of quality speech bandwidth in conformance using the ITU-T standard. The greater bit rate has greater quality the low bit rate gives top quality and offers system designers with a lot more versatility. The ITU-T G.723.1 standard identifies a coded representation you can use for blending it or any other audio signal aspects of multimedia services in a really low bit rate included in the overall H.324 group of standards. It encodes speech or any other audio signals in frames using linear predictive analysis-by-synthesis coding. The excitation signal for that high rate coder is Multipulse Maximum Likelihood Quantization (Mega pixel-MLQ) but for the low rate coder is Algebraic-Code-Excited Linear-Conjecture (ACELP). This G.723.1 vocoder goes to GAO’s group of Speech Vocoders. This line includes a multitude of vocoders for example G.722.1 Vocoder , GSM-AMR (AMR-NB) Vocoder , G.729, G.729A and G.729AB Speech Vocoder which are perfect for visual telephony, wireless communications, and digital satellite communication systems along with other similar items. About GAO Research Corporation. GAO Research Corporation. (world wide web.GAOResearch.com) is really a world-famous provider of top quality, reliable telecommunications software including embedded modem software, fax modem software, speech codes, and telephony software for an array of DSPs and microprocessors.

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