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SX7300P
Speech Codecs

The SX7300P provides a high performance, low cost, low complexity solution ideal for speech transmission over the Internet or other packet networks.

The coder offers close to toll quality speech and, with a rate of just 7300 bps, enables speech transmission over either V.34 or V.32bis modems. At V.34 data rates multiple speech channels or multimedia applications such as simultaneous voice and data may be supported on a single telephone line. The small frame size of the coder provides low end-to-end delay. A powerful frame reconstruction algorithm yields exceptionally robust performance in the presence of channel errors.

The low delay characteristics and good tandeming performance make it ideal for multi-party conferencing. Modest memory and processing power requirements enable implementations of the coder in either Pentium™ environments or on inexpensive DSPs. The SX7300P offers speech quality comparable with ITU-T G.723 and G.729 Annex A with enhanced performance in the presence of lost speech frames and at significantly lower complexity and lower cost. Voice Activity Detection and Comfort Noise generation is optional.