由于语音信号是时频稀疏的，语音信号的能量主要集中在某些窄带上，且各语音源的能量集中区域不交迭。
The speech is sparse in time-frequency domain, so the energy of voice signal only concentrates on some narrow frequency, and the energy of voice sources are not overlap each other.
由于语音信号是时频稀疏的，语音信号的能量主要集中在某些窄带上，且各语音源的能量集中区域不交迭。
The speech is sparse in time-frequency domain, so the energy of voice signal only concentrates on some narrow frequency, and the energy of voice sources are not overlap each other.
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