Method and related apparatus for canceling vocal portions containing in two
signals of two stereo channels and providing two corresponding output signals.
The method includes: generating a mono signal according to a sum of the signals
of the stereo channels; respectively performing vocal cancellation to each signal
of one stereo channel according to a difference between the signal of the stereo
channel and the mono signal, and performing low-frequency band and high-frequency
band compensation to results of vocal cancellation to generate the two output signals.
Because vocal cancellation is performed for respective signal of one stereo channel,
the two output signals will have substantial difference in frequency band other
than the high-frequency band to increase effect of stereo.
