Patent ID: 8532803
Filing Date: 2013-09-10
Classification: H04R

Abstract:
1. A method for processing an audio signal, comprising: receiving, by an audio processing apparatus, an input signal; extracting, via a low frequency extracting part, a mid frequency extracting part, and a high frequency extracting part, respectively, a low frequency signal, a mid frequency signal and a high frequency signal from the input signal; obtaining, via a gain control part, a low-band gain, a mid-band gain, and a harmonic control factor, based on a loudspeaker characteristic; inputting, to a first applying part, the low frequency signal extracted from the low frequency extracting part, and the low-band gain obtained from the gain controlling part, and generating, via the first applying part, a modified low frequency signal by applying the inputted low-band gain to the inputted low frequency signal; inputting, to a harmonic extracting part, the modified low frequency signal generated by the first applying part; when the harmonic control factor is obtained, inputting, to the harmonic extracting part, the harmonic control factor obtained from the gain control part, and generating, via the harmonic extracting part, a harmonic signal from the inputted modified low frequency signal using the inputted harmonic control factor, inputting, to a second applying part, the mid frequency signal extracted from the mid frequency extracted part, and the mid-band gain obtained from the gain control part, and generating, via the second applying part, a modified mid frequency signal by applying the inputted mid-band gain to the inputted mid frequency signal; and inputting, to a mixing part, the modified mid frequency signal generated by the second applying part, the high frequency signal extracted from the high frequency extracting part, and the harmonic signal generated by the harmonic extractin art and generating, via the mixing part, a mixed signal by mixing the inputted modified mid frequency signal, the inputted high frequency signal, and the inputted harmonic signal.