Mfb system with a by pass network

Details Mfb system with a by pass network Mfb system with a by pass network

H - Electricity

04

R

179/35

H04R 3/04 (2006.01) H04R 3/00 (2006.01)

Patent

CA 1171360

PHN. 9711 13 ABSTRACT: A device for driving an electroacoustic transducer comprising a feedback amplifier device and a pickup whose output signal is a measure of the acous- tic output signal of the transducer and which serves as a feedback signal, is equipped with a by-pass network which bypasses at least the electroacoustic transducer and the pickup, the output signal of the by-pass network for frequencies outside the operating range of the electroacoustic transducer being large and for frequencies in the operating range (fl to fh) of the electroacoustic transducer being small relative to the output signal of the pickup. The sum of the output signals of the pickup and the by-pass network serves as the feedback signal. This results in a device having a larger frequency range for the transducer and having a substantially smaller distortion. If desired, the device may also be equipped with a network included before the electroacoustic transducer, which network has a frequency response which is the inverse of that of the signal path from the electroacoustic transducer to the pickup, and a limiter. These steps yield an additional reduction of the distortion.

372913

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