Patent ID: 6865430
Filing Date: 2005-03-08
Classification: G10H,G10L

Abstract:
1. Apparatus for enhancing digital audio signals after the digital audio signals are compressed and decompressed, the apparatus comprising: an input terminal for receiving a digital decompressed audio signal; a digital harmonic enhancer coupled to receive the digital decompressed audio signal and provide a harmonically enhanced audio signal, the harmonic enhancer includes a digital amplifier coupled to provide harmonic distortion, a digital high pass filter coupled to receive the digital decompressed audio signal and to provide a digital high pass audio signal to the digital amplifier, and a digital level adjuster coupled to receive the harmonic distortion from the digital amplifier and to provide a level adjusted harmonic distortion audio signal to one input of a digital adder, the digital adder having a second input coupled to receive the digital decompressed audio signal and to add the harmonically enhanced audio signal to the digital decompressed audio signal to produce the harmonically enhanced audio signal; a digital warmth adder coupled to receive the digital decompressed audio signal and provide a warmth enhanced audio signal; and a digital frequency equalizer coupled to receive the harmonically enhanced audio signal and the warmth enhanced audio signal and provide a digital enhanced decompressed audio signal.