Method for dynamically adjusting the spectral content of an...

Details Method for dynamically adjusting the spectral content of an... Method for dynamically adjusting the spectral content of an...

2011-03-01

2011-03-01

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Sound effects

C381S098000, C704S200100

Reexamination Certificate

active

07899192

ABSTRACT:
A method for dynamically adjusting the spectral content of an audio signal, which increases the harmonic content of said audio signal, said method comprising translating an encoded digital signal into data bands, creating a psychoacoustic model to identify sections of said data bands that are deficient in harmonic quality, analyzing the fundamental frequency and amplitude of said harmonically deficient data bands, creating additional higher order harmonics for said harmonically deficient data bands, adding said higher order harmonics back to said encoded digital signal to form a newly enhanced signal, inverse filtering said newly enhanced signal, and converting said inverse filtered signal to an analog waveform for consumption by the listener.

REFERENCES:
patent: 5930373 (1999-07-01), Shashoua et al.

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