isd-t360sb ETC-unknow, isd-t360sb Datasheet - Page 91
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isd-t360sb
Manufacturer Part Number
isd-t360sb
Description
Manufacturer
ETC-unknow
Datasheet
1.ISD-T360SB.pdf
(112 pages)
- Current page: 91 of 112
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2—SOFTWARE
ISD
27
16
21
Index
DTMF Generation:
DTMF_GEN_TWIST_LEVEL
Tone Generation:
TONE_GEN_LEVEL
VCD Playback and Voice
Synthesis:
VCD_PLAY_LEVEL
Table 2-5: TUNABLE PARAMETERS: Tone Generation and Message Playback
Parameter Name
A one-byte value that controls the twist level of a DTMF tone,
generated by the GT command, by controlling the energy level of
each of the two tones (low frequency and high frequency)
composing the DTMF tone. The Least Significant Nibble (LSN)
controls the low tone and the Most Significant Nibble (MSN) controls
the high tone. The energy level of each tone, as measured at the
output of a TP3054 codec (before the DAA) connected to the
VoiceDSP processor is summarized in the following table:
The volume of the generated DTMF tone during measurements
was 6. (TONE_GEN_LEVEL+ vol_level = 6).
Note: the vol_level parameter is controlled by the VC command.
For the default level, the high tone is –14.3 dBV and the low tone is
–12.4 dBV, which gives a DTMF twist level of 1.9 dB.
The energy level of a single generated tone is the level of the low
tone.
Controls the energy level at which DTMF and other tones are
generated. Each unit represents 3 dB. The default level is the
reference level.
For example, if you set this parameter to 4, the energy level is 6 dB
less than the default level. The actual output level is the sum of
TONE_GEN_LEVEL and the vol_level parameter, controlled by the
VC command. The tones are distorted when the level is set too
high.
Legal values: 0 £ TONE_GEN_LEVEL + vol_level £ 12.
Controls the energy during playback and external voice synthesis.
Each unit represents 3 dB. The default level is the reference level.
For example, if you set this parameter to 4, the energy level is 6 dB
less than the default level. The actual output level is the sum of
VCD_PLAY_LEVEL and the vol_level parameter (controlled by the VC
command). Speech is distorted when the level is set too high.
Legal values: 0 £ VCD_PLAY_LEVEL + vol_level £ 12.
Nibble Value
0
1
2
3
4
5
6
7
8 - 15
Description
Tone Energy (dB-Volts)
–17.8
–14.3
–12.9
–12.4
–12.0
–11.9
–11.85
–11.85
0
ISD-T360SB
66
6
6
Default
2-55
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