Speech Processor - Kenwood TS-990S Instruction Manual

9 TRANSMIT FUNCTIONS

SPEECH PROCESSOR

In SSB mode, the audio level of the transmitting
transceiver reflects the level of the transmit power and
propagates to the receiving transceiver; hence, the audio
quality degrades on the receiving transceiver. With a
speech processor enabled, the signal is compressed by
means of the digital signal processing and transmitted
after the average transmit power is increased.
In AM and FM modes, the degree of modulation is
stabilized regardless of the audio level of the transmitting
transceiver, resulting in an improvement in readability.
[SEND] F[METER]
[PROC IN] [F1] [F7] Mode Keys
[PROC/SEL]
Level
Speech
Processor
ON
Level
Speech
Processor
OFF
SPEECH PROCESSOR
1 Press a mode key to select SSB, AM, or FM mode.
2 Press [PROC/SEL/SEL] to enable or disable the
Speech Processor.
The "PROC/SEL" LED lights green while the speech
processor is active.
Note:
◆ The speech processor can function for the audio signal from the
ANI terminal of the ACC 2 connector or from the
connector on the rear panel.
9-6
ADJUSTING THE SPEECH PROCESSOR INPUT LEVEL
1 Press a mode key to select SSB, AM, or FM mode.
2 Press [PROC/SEL] to enable or disable the Speech
Processor.
3 Press [METER] (F) to display the compression level
meter (COMP).
Note:
◆ The [METER/COMP] (F) key appears only if the speech processor
is active (the "PROC" LED is lit).
4 Press [SEND], or press down the PTT (microphone)
switch.
The transceiver is placed into the transmit state.
Time
5 While you are speaking into a microphone, rotate the
PROC IN control to adjust the compression level.
While observing the compression level from the compression
level meter (COMP), adjust the input level to the speech
Time
processor. The readability will drop if the compression level is
excessively high.
Note:
◆ Speech Processor Input Level allows you to adjust the input level
of the mixed audio from the audio sourced as configured for Mic
Gain and the audio source configured in the Modulation Source
screen.
(USB-B)
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