Acoustic Masking Based on Time-reversed Speech
Acoustic masking refers to the effect that a sound can be suppressed by another.It can be used for speech privacy protection.According to human auditory.characteristics,better acoustic masking can be obtained when the spectrum of the masking acoustic signal is close to the target speech.This paper presents an improved acoustic masking algorithm based on time-reversion of the speech to be masked.Time-reversed speech preserves the speakers pronunciation features but is meaningless in semantics.The proposed method can significantly improve the security of speech information and the deciphering difficulty for eavesdropping.The experimental results show that the generated speech-like noise has a good masking effect and is comfortable for speakers.
Acoustic masking speech information security time-reversion speech signal processing
Jiang Jingsai Li Ye Zhang Peng Fan Yanhong Ma Xiaofeng Hao Qiuyun
Shandong Computer Science Center,Shandong Provincial Key Laboratory of Computer Network Jinan China
国际会议
重庆
英文
905-909
2016-03-20（万方平台首次上网日期，不代表论文的发表时间）