Patent ID: 7039204
Filing Date: 2006-05-02
Classification: G10L,H04S

Abstract:
1. A method for mixing an N-channel input audio signal to generate an M-channel output audio signal, where N and Mare positive integers, the method comprising the steps of: (a) transforming the N-channel input audio signal from a time domain into a frequency domain; (b) generating a first spectral loudness measure for the N-channel input audio signal; (c) mixing N frequency-domain input channel signals corresponding to the N-channel input audio signal to generate M frequency-domain mixed channel signals; (d) generating a second spectral loudness measure for the M frequency-domain mixed channel signals; (e) equalizing the M frequency-domain mixed channel signals using a frequency-dependent gain factor that is based on the first and second spectral loudness measures to generate M equalized mixed channel signals; and (f) transforming the M equalized mixed channel signals from the frequency domain into the time domain to generate the M-channel output audio signal.