AT2004 Datasheet, PDF (4/25 Pages) List of Unclassifed Manufacturers – 4 Channels ADPCM Processor with Echo Cancellation and Conferencing

AT2004 Function Block Diagram
AT2004
4 Channels ADPCM Processor with Echo Cancellation and Conferencing
8-bit PCM
LawP
Law to
Linear
EC
Reset
Echo
Canceller**
M
8-bit
U
PCM
X
Linear
to Law
Channel
Bypass
LawP
**Please refer to the next page
Conferencing up to 3 sources
3
EC
Reset
Gain
M
U
X
Gain
Law to
Linear
LawA
ADPCM ^Channel
Bypass ^Bypass
Linear
to Law
ADPCM
Encoder
ADPCM
Reset
M
U
X
ADPCM
Reset
M
M
U
U
X
X
ADPCM
Reset
M
M
U
U
ADPCM
X
X
Decoder
ADPCM
Signal
ADPCM
Signal
3
ADPCM
Conferencing up to 3 sources ^Bypass
LawA
Page 4 of 25
©2001 Atelic System, Inc