Digital Voice Systems AMBE-3000 Specifications Page 98

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AMBE-3000F™ Vocoder Chip Users Manual
Version 3.4, April, 2014
(Subject to Change) Page 88
DVSI CONFIDENTIAL PROPRIETARY
Appendices
Digital Voice Systems, Inc.
The Speech Compression Specialists
7 Appendices
7.1 Algorithmic and Processing Delays
The total delay due to the coding/decoding algorithm is = 62 ms
Encoder Time
(58 ms)
Transmit Channel Receive
Decoder Time
(up to 35 ms)
Algorithm + Processing
delay
Transmission + Channel + Receive
delay
Scheduling + Algorithm + Processing
delay
Begin Speech
out
**Encoder Algorithmic delay.
(This delay includes the delay associated with collecting enough PCM samples for the encoder algorithm
to begin processing.)
52 ms
Encoder Processing delay.
6 ms
Packet read delay.
~ Channel transmission delay.
~ Packet write delay.
~
(user defined)
Decoder scheduling delay.
0 – 20 ms
**Decoder Algorithmic delay.
10 ms
Decoder Processing delay.
(Time to actual decode.)
5 ms
First speech
sample ready.
**Note:
The total algorithmic delay for the encoder and decoder combined is 62 msec. The breakdown in this chart is somewhat arbitrary
but it represents a close estimate.
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