Channel Packet Bytes 24 & 25 (Ws); Channel Packet Bytes 26 & 27 (Format); Table 20 Tone; Able Tone Amp -- Channel Arameter - Digital Voice Systems Net-2000 User Manual

Net-2000™ Voice Codec Unit
User's Manual
Table 20 tone.amp -- Channel-Parameter
Channel Packet Bytes 24 & 25 (ws)
The ws element of the packet contains the number of samples that should be synthesized by the
decoder when transmitted to the VCU and the number of samples that were used to encode the
channel data when transmitted by the VCU. Appropriate values for ws are listed inTable 21 ws --
Channel Parameter.
ws = Number of voice samples.

Table 21 ws -- Channel Parameter

Channel Packet Bytes 26 & 27 (format)
Format include both the number of soft decision bits in the channel data and the format of the voice
data to synthesize. This number of soft decision bits should be between 1 (hard decision) and 8
(maximum soft decision capability). The number of soft decision bits is determined by the top 8 bits
of the format element.
(format >> 8) & 0x00ff
The format element of the channel packet also indicates the format of the voice data to be generated
by the decoder. Appropriate values for the number of soft decision bits and voice data type in the
format element is listed in Table 22 format -- Channel Parameter.
format = Soft decision & voice data
Voice Data Formats
Linear 16-bit PCM
Soft-Decision Bits
1
2
3
4
5
6
7
8

Table 22 format -- Channel Parameter

The voice data format to synthesize is as follows:
The voice data to be synthesized is 16 bit PCM
(format & 0x00ff)
DVSI Confidential Proprietary
Description
Byte 26
7 6 5 4 3 2 1 0
0 0 0 0 x x x x
Byte 26
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 1 0
0 0 0 0 0 0 1 1
0 0 0 0 0 1 0 0
0 0 0 0 0 1 0 1
0 0 0 0 0 1 1 0
0 0 0 0 0 1 1 1
0 0 0 0 1 0 0 0
== 0x00
Section 3 – Net-2000™ VCU Control
Byte 24 Byte 25
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1
0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0
0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1
Byte 27
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
Byte 27
7 6 5 4 3 2 1 0
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
0 0 0 x 0 0 x x
Decimal
Value
159
160
161
Hex Value
0xXX00
Hex Value
0x01XX
0x02XX
0x03XX
0x04XX
0x05XX
0x06XX
0x07XX
0x08XX
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