| 摘要 |
The adjuster for discriminating noises of the surroundings to adjust the volume of the A/V system, includes an audio superimposer superimposing audio signals from R/L channels of an audio processor, a filter filtering voice signals from the superimposed audio signals, an amplifier amplifying the filtered voice signals, the 1st audio adjuster adjusting the audio level from the R/L channel, the 2nd audio adjuster adjusting the voice level from the amplifier, a key input emphasizing the voice level to the desired extent, a micom generating control signal for an audio synthesizer, the audio synthesizer synthesizing the audio signal from the 1st and 2nd adjusters under the control signal.
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