Abstract
An additional coding of auditory objects for packet loss concealment has been proven to be effective in music streaming applications. This paper describes a new extension to our previous method in separating drum objects from polyphonic music signals with improved performance. After a simple time domain separation method employed in our early system, we propose in this paper a novel frequency domain technique, a tonal-components tracking and attenuation (TTA), to suppress quasi-stationary auditory objects such as singing voice in the separated drum objects. Experimental results show that the new method is an effective pre-processing step to separate drum objects from polyphonic music signals. This method helps to improve accuracy of drum clustering and to mitigate the pitch and harmonic structure mismatch problem when applied in packet loss recovery in music streaming.
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