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Modified group delay functions are beginning to gain significance in the literature for formant estimation, speaker recognition and speech recognition. In particular, group delay functions have the property that they possess higher resolution compared to that of the magnitude spectrum. In this paper, modified group delay functions are used for the estimation and tracking of two pitches in concurrent...
In this paper, we propose a modified group delay based method for melodic pitch extraction from heterophonic music. The power spectrum of the music signal is first flattened in order that the system characteristics are annihilated, while the characteristics of the source are emphasized. The modified group delay function of this signal produces peaks at multiples of the pitch period. The first 3 peaks...
In this paper, we propose a method to extract the melody pitch in a polyphonic environment, using phase information of the signal. Group delay functions are used for melody extraction. The group delay function computed directly from the speech signal has been widely used to extract source and system parameters. The main objective of this study is to address melodic pitch extraction using features...
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