G.722.1

G.722.1 is a low-bit-rate wideband coder, which codes speech at 24 kbps or 32 kbps. The quality at 32 kbps is the same as that of G.722 SB-ADPCM at 64 kbps. It uses a transform-coding scheme called Modulated Lapped Transform (MLT), with a 20 ms frame size. The algorithmic delay is 40 ms (20 ms frame size + 20 ms look-ahead).

Technical Specification

• Supports all bit rates viz. 16/32 kbps at 16 khz sampling rate
• C callable API for initialization, encoding and decoding of speech data
• Supports Multi-channel capability
• Optimized implementation
• Bit Compliant with ITU-T test vectors

Applications

• Wideband IP telephony
• Streaming audio over the Internet
• Video and Audio conferencing
• Audio storage and playback
• Store and forward messaging (voice mail)

Platforms

• Currently supported on TI C64x™ (TMS320C64xx™) and TI C64x+™/DaVinci™ (DM644x™)
• For further details contact mkt@ittiam.com

For a demonstration of G.722.1 capabilities contact mkt@ittiam.com