FIELD: diver's equipment.
SUBSTANCE: diver's speech corrector with smoothly changing factor of frequency correction has microphone 1, low frequency amplifier 2, 17, balance modulator 3 onto which the voltage of high-frequency signal is applied from the first heterodyne 4, narrow-band filter 5 extracting one side band, amplifier-restrictor 6, frequency detector with low frequency filter (0-3-Hz), low frequency amplifier 8 having variable amplification factor, high frequency frequency-modulated generator 9, single-band loudness envelope detector 10, loudness envelope amplifier 11 with low frequency filter (0-35 Hz), high-frequency signal amplitude modulator 12, high frequency amplifier 13, signal amplitude detector 14 onto which the high frequency voltage is applied from the second heterodyne 15, frequency corrector 16, low frequency amplifier 17, output loudspeaker 18.
EFFECT: improved precision.
1 dwg
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