Circuit for suppressing amplitude peaks caused by stop consonant

Details Circuit for suppressing amplitude peaks caused by stop consonant Circuit for suppressing amplitude peaks caused by stop consonant

1984-12-20

1986-05-13

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381 71, 381112, H04R 2500

Patent

active

045891362

ABSTRACT:
A circuit in an electroacoustic transmission system suppresses amplitude peaks which are caused by the utterance of a stop consonant such as a "P". A microphone of the transmission system has an output which a high-pass filter is connected. The high-pass filter is normally inactive but can be activated by an electronic switch for a brief period of time. The switch is controlled by a train of electronic elements functioning as a detector for detecting a characteristic quiescent or pause period before the explosive discharge of the stop consonant. Upon detecting this pause the electronic switch is activated and held activated for about 10 to 30 ms. During that time the peak occurs but is suppressed in that it is not passed by the high-pass filter which is activated during this time.

REFERENCES:
patent: 4409435 (1983-11-01), Ono

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