Audio reproducing device

Details Audio reproducing device Audio reproducing device

2005-07-05

2005-07-05

Lee, Ping (Department: 2644)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Quadrasonic

C381S027000

Reexamination Certificate

active

06914988

ABSTRACT:
An audio reproducing device includes an input for receiving an n-channel input signal, an output for supplying an 1-channel output signal to 1 loudspeakers, and an audio processing unit for processing the input signal. The audio processing unit a signal enhancer for enhancing an m-channel signal part of the n-channel input signal, where m<n, the signal enhancer having, for each channel signal part of said m-channel signal part, a non-linear anti-symmetric monotone transfer function. The audio reproducing device is further provided with a speech-music discriminator, which, in response to one of the channel signal parts of the m-channel signal part designated for speech, generates a control signal indicating the probability p that the one of the channel signal parts contains speech signals. This control signal is used to control the signal enhancer.

REFERENCES:
patent: 4589129 (1986-05-01), Blackmer et al.
patent: 5493617 (1996-02-01), Waller, Jr.
patent: 2002/0090092 (2002-07-01), Aarts et al.
patent: 0462381 (1991-12-01), None
patent: 0517233 (1992-12-01), None
patent: WO0250831 (2002-06-01), None

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