Masking speech with its time-reversed signal

Masking speech with its time-reversed signal

On time-frequency masking in voiced speech

This paper addresses the issue of masking of noise in voiced speech. First, we examine the audibility of cyclostationary narrow-band noise bursts added to voiced speech generated by synthetic excitation. Varying the temporal location of noise within a pitch cycle corresponds to varying its phase spectrum. Using this fact, we found that a change of phase of the noise in the high frequency region...

Robust speech separation using time-frequency masking

A multi-microphone time-frequency speech masking technique is proposed. This technique utilizes both the timefrequency magnitude and phase information in order to estimate the Signal-to-Noise Ratio (SNR) maximizing masking coefficients for each time-frequency block given that the direction (or alternatively, the time-delay of arrival) of the speaker of interest is known. Using this masking algo...

Multi-channel speech separation with soft time-frequency masking

This paper addresses the problem of separating concurrent speech through a spatial filtering stage and a subsequent time-frequency masking stage. These stages complement each other by first exploiting the spatial diversity and then making use of the fact that different speech signals rarely occupy the same frequency bins at a time. The novelty of the paper consists in the use of auditorymotivat...

Nonlinear Cochlear Signal Processing and Masking in Speech Perception

Auditory masking is critical to our understanding of speech and music processing. There are many classes of masking, but two major classes are easily defined. These two types of masking and their relation to nonlinear (NL) speech processing and coding are the focus of this chapter. The first class of masking, denoted neural masking, is due to internal neural noise, characterized in terms of the...