Reduction of noise for speech signal enhancement using Spectral Subtraction method
Jennifer C. Saldanha, O R Shruthi · 2016
To improve the intelligibility and quality of the speech, speech enhancement is done. Speech signal when recorded in the noisy environment degrades the clean speech signal. Speech enhancement reduces the noise without distorting the original (clean) signal. In this concept, the method of Multi-Band Spectral Subtraction (MBSS) is used to enhance the noisy speech signal. The fact that the speech spectrum is affected by colored noise differently at various frequencies is taken into account. Later, the properties of this method are derived in terms of input and output SNR.