ISD-T360 ETC [List of Unclassifed Manufacturers], ISD-T360 Datasheet - Page 92

• Manufacturer Part Number: ISD-T360
• Description: VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support
• Manufacturer: ETC [List of Unclassifed Manufacturers]

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7
8
9
70
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Index
Table 2-4: TUNABLE PARAMETERS: Voice Compression and Decompression (VCD)
Voice Activity
Detection (VAD):
VAD_SIL_HANG_THRESH
OLD
Voice Activity
Detection (VAD):
VAD_SIL_ENABLE
Voice Activity
Detection (VAD):
VAD_ENERGY_FACTOR
SW Automatic Gain
Control (SW AGC):
SWAGC_ENABLE
SW Automatic Gain
Control (SW AGC):
SWAGC_FACTOR
Parameter Name
The minimum time period for silence detection, during
speech. As this threshold increases, the time period
interpreted as silence decreases.
If this threshold is too low, words may be partially cut off. If it is
too high, no silence is detected.
Legal values: 8 to 31.
Silence compression control.
0 turns silence compression off.
Note: Silence compression must be turned off when using
ARAM for voice storage. Otherwise the playback quality is
unpredictable.
Determines the energy level used to synthesize silence. For the
default value, the energy levels of the synthesized silence and
the recorded silence are the same.
If you divide (multiply) the default value by two, the
synthesized silence is 6 dB less (more) than the level of the
recorded silence.
Legal values: 1024 to 16384.
SW AGC control.
0 turns SW AGC off.
Determines the maximum gain that the SW AGC algorithm
may use.
Legal values: 0, 1, 2, 4, 8, 16, 32, 64, 128
Note: Value 0 means the the maximum gain is defined by the
algorithm.
Description
Voice Solutions in Silicon™
15
1
1
Default
8192
128