G.726 Speech Coder

ADT G.726 C54x , C55x , C64x, ARM Cortex-A8

G.726 is an ITU-T Adaptive Differential Pulse Code Modulation (ADPCM) standard speech codec. Adaptive Digital's G.726 speech coder is used in many applications that require high quality, robust speech reproduction. G.726 provides rates of 16, 24, 32, or 40 kbps. Applications include video conferencing systems, multimedia, flight recording, ISDN, and satellite communications.
ADT offers both a high performance (Low MIPS) and low memory version.

Coding Rate: 16, 24, and 40kbps

Sampling Rate: 8 kHz

Delay: 125 usec

Data sheet: .pdf

FEATURES

Functions are C-callable
Multiple channel operation
Capable of in-band synchronization.
Can be integrated with echo cancellers, and tone detection/regeneration.
The encoder and decoder meet all ITU G.726 compliance data files.

AVAILABILITY

ADT G.726 is currently available on the TMS320™ DSP Family

C54x™DSP, C55x™DSP, & C64x™DSP Generations.

SPECIFICATIONS

G.726 C54x

All Memory usage is given in units of 16-bit word.

Variation	MIPS	Program Memory	Data Memory	Per-Channel Data Memory
Low MIPS version	9.8	3500	9200	256
Low Mem Version	10.8	1351	986	256

G.726 C55x

All Memory usage is given in units of byte.

Variation	MIPS	Program Memory	Data Memory	Per-Channel Data Memory
Low MIPS version	10.9	7710	18,400	512
Decode	12.4	3270	1988	512

G.726 C64x

All Memory usage is given in units of byte.

Variation	MIPS	Program Memory	Data Memory	Per-Channel Data Memory
C64x	8	5760	1232	60

ARM Cortex-A8

ARM Cortex-A8 function	MIPS
Encode	6.5
Decode	7.1

Contact Sales for memory requirements @ 610-825-0182 x120

FUNCTION

G726_ADT_config(. . .) Configure G.726

G726_ADT_init(. . .) Initializes a single channel.

G726_ADT_encode(. . .) Executes the G.726 encoder

G726_ADT_decode(. . .) Executes the G.726 decoder

APPLICATIONS

video conferencing systems

multimedia

flight recording

ISDN

satellite communications.