METHOD AND APPARATUS FOR RECEIVING AND PLAYING A SIGNAL IN A RADIO RECEIVER

METHOD AND APPARATUS FOR RECEIVING AND PLAYING A SIGNAL IN A RADIO RECEIVER

A method and apparatus for receiving and playing a signal in a radio receiver to suppress microphonic feedback are provided by alternately pitch shifting a received audio signal. The pitch of the received audio signal is alternately shifted up and then down, repeatedly over successive intervals of t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OUNG KAR BOON, TAN CHEAH HENG, CHACKO V. C. PRAKASH VK, OOI THEAN HAI, YOW HUOY THYNG
Format: Patent
Sprache:eng
Schlagworte:
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
TRANSMISSION
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Beschreibung
Zusammenfassung:A method and apparatus for receiving and playing a signal in a radio receiver to suppress microphonic feedback are provided by alternately pitch shifting a received audio signal. The pitch of the received audio signal is alternately shifted up and then down, repeatedly over successive intervals of the audio signal, to produce a pitch swing signal which is then played over a speaker. The alternating pitch shifting prevents the buildup of regenerative feedback normally caused by acoustic vibrations coupling into the radio receiver.