In the field of electroacoustic installations, several more or less sophisticated methods may be used to avoid annoying feedback “howl” and boost the potential acoustic gain (PAG) by a few dB. This paper discusses the use of a digital frequency shifter instead of more popular narrow-band filtering techniques. The device has been implemented using a readily available programmable DSP platform and its efficiency has been proven by measurements in various environments.

Author: Vila, Carlos
Affiliation: Enginyeria La Salle
AES Convention: 118 (May 2005) Paper Number: 6505
Publication Date: May 1, 2005
Session Subject: Room and Architectural Acoustics; Sound Reinforcement

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