Method and apparatus for sound enhancement

A sound enhancement method comprising:

• (1) obtaining sound signals and converting the sound signals into digital signals;
• (2) decomposing the digital signals by an adaptive filter bank to obtain a plurality of pseudo-Intrinsic Mode Function components (pseudo-IMFs), wherein the pseudo-IMFs represent the amplitude changes of the digital signals converted from the sound signals at different frequencies over time;
• (3) selectively amplifying the amplitudes of the pseudo-IMFs obtained in step (2);
• (4) reconstituting the selectively amplified pseudo-IMFs to obtain reconstituted signals;
• (5) converting the reconstituted signals into analog signals.

A sound enhancement apparatus comprising:

• a sound receiving module, a sound enhancement module and a sound playback module;
• wherein
• the sound receiving module is used to receive sound signals and convert the sound signals into digital signals;
• the sound enhancement module is used to process the digital signals to obtain a plurality of Intrinsic Mode Function components (IMFs) or pseudo-IMFs, selectively amplify the amplitudes of the obtained IMFs or pseudo-IMFs, reconstitute the selectively amplified IMFs or pseudo-IMFs to obtain reconstituted signals, and convert the reconstituted signals into analog signals to obtain enhanced sound signals;
• the sound playback module is used to play the enhanced sound signals.