METHOD FOR DYNAMICALLY ADJUSTING THE SPECTRAL CONTENT OF AN AUDIO SIGNAL

摘要

Circuit and associated methods for dynamically adjusting the spectral content of an audio signal, which increases the harmonic content through the systematic introduction of amplitude asymmetry. In one embodiment, the method comprises a spectral modification of an analog audio signal in which the high-frequency content is reduced as a function of the signal amplitude and spectral distribution. The audio signal is subjected to a complementary pre-emphasis and de-emphasis of the high frequencies.

主权项

1. A method of modifying an audio signal, comprising the steps of:
receiving an audio signal; and eliminating or reducing artifacts in the high frequencies of the audio signal by modifying high frequency amplitude and spectrum content of the audio signal according to an adaptive psychoacoustic model.