Patent ID: 7916876
Filing Date: 2011-03-29
Classification: G10L

Abstract:
1. A digital harmonic enhancer comprising: a baseband integrated circuit configured to process digital audio signals and add frequency components created by combining amplitude information of said digital audio signals with a fixed carrier frequency to a digital audio signal, wherein said harmonic enhancer is configured to create at least one additional harmonic spectrum from an original spectrum of said digital audio signal, and configured to add said at least one additional harmonic spectrum to a delayed version of said original spectrum of said digital audio signal, and wherein said harmonic enhancer comprises: an upsample unit configured to upsample said original spectrum of said digital audio signal to increase a bandwidth size for said original spectrum; a low pass filter unit configured to low pass filter a resulting upsampled spectrum to remove an alias spectrum of said original spectrum; a delay unit configured to create a delayed version of said low pass filtered original spectrum of said digital audio signal; at least one branch configured to create said at least one additional harmonic spectrum from said low pass filtered original spectrum of said digital audio signal; and an adder unit configured to add said at least one additional harmonic spectrum to said delayed version of said low pass filtered original spectrum of said digital audio signal.