translate to AEC states.
Byte Value
AEC State Value (Byte Value - 132)
AEC State Description
132
0
Idle
133
1
Transmit
134
2
Receive
135
3
Double Talk
Here's an example
BLDATA
message to clear things up.
S01BLDATApèppçppppppèä
The first four bytes (pèpp) consist of only two values.
p
= 0x70 = 112
→
112 - 132 = -20
è
= 0x8A = 138
→
138 - 132 = 6
So, the signal at input A is at 6 dB, while the signals at the rest of the inputs are at -20 dB.
The next five bytes (çpppp) consist of only two values.
p
= 0x70 = 112
→
112 - 132 = -20
ç
= 0x87 = 135
→
135 - 132 = 3
So, the signal at output 1 is at 3 dB, while the signals at the rest of the outputs are at -20 dB.
The next byte (p) consists of only one value.
p
= 0x70 = 112
→
112 - 132 = -20
So, the signal level of the AEC reference is -20 dB.
The next byte (p) consists of only one value.
p
= 0x70 = 112
→
112 - 132 = -20
So, we know that the room gain for input 1 is -20 dB.
The next byte (è) consists of only one value.
è
= 0x8A = 138
→
138 - 132 = 6
So, we know that the AGC gain for input1 1 is 6 dB.