Abstract
The similarity between target speech and interfering signal may affect masking. Since time-reversed masker is an unintelligible speech-like signal, the influence of intelligibility can be avoided. This paper describes a sentence intelligibility test with target speech masked by different time-reversed maskers to evaluate the similarity effect. The time-reversed masker is processed by locally time-reversal segments of speech uttered by same-talker, same- and different-sex talker. The results show that the amount of masking is highly dependent on the similarity between target speech and time-reversed masker: time-reversed masker of target speech gives a rise in average speech reception threshold (SRT) of about 3 dB and 9 dB compared to that of another talker with same- and different-sex, respectively. Assuming the energetic masking effect for time-reversed maskers of different talkers to be similar, the amount of similarity with same-sex is larger than 6 dB and the amount of similarity with same-talker is l...
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