Loudness limiter

Details Loudness limiter Loudness limiter

1996-10-01

2000-08-22

Le, Huyen

Electrical audio signal processing systems and devices

Hearing aids, electrical

381318, 381320, H04R 2500

Patent

active

06108431&

ABSTRACT:
For limiting the signal transmitted to the human ear in dependency on an incoming acoustical signal, there is provided a signal processor, the output of which acts on an output transducer and on a calculator unit which calculates according to a preselected model the psychoacoustical entity loudness of the incoming acoustic signal. The loudness, thus calculated, is compared with a predetermined loudness level (MAL) and according to the result of such comparison, parameters at the processor unit are varied so as to restrict the transmitted loudness on the MAL level.

REFERENCES:
patent: 4406923 (1983-09-01), Burne, III et al.
patent: 4475230 (1984-10-01), Fukuyama et al.
patent: 5278912 (1994-01-01), Waldhauer
U.S. application No. 08/640,635, Filed May 1, 1996, Inventors: Bohumir Uvacek et al.

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