Audio reproducing apparatus

Details Audio reproducing apparatus Audio reproducing apparatus

2011-08-16

2011-08-16

Flanders, Andrew C (Department: 2614)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

Reexamination Certificate

active

08000824

ABSTRACT:
An audio signal processing apparatus includes a high-pass filter for extracting from an audio signal a frequency component higher than f0, n band-pass filters for extracting, from the audio signal, frequency components falling within a frequency range from f0/N to f1/N, n harmonic overtone generators for frequency multiplying each of outputs of the n band-pass filters by N, a first combining unit for combining the generated harmonic overtone components, a level detector for detecting a level of a supplied harmonic overtone component, a gain controller for controlling dynamically the harmonic overtone component supplied from the first combining unit, and a second combining unit for combining the frequency component extracted by the high-pass filter and a harmonic overtone component output from the gain controller, where N is (n being a natural number), f0is a first predetermined frequency, and f1is a second predetermined frequency higher than f0.

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