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| STUDY ON PHASE PERCEPTION IN SPEECH | |
| 作者姓名： | Tong Ming Bian Zhengzhong Li Xiaohui Dai Qijun Chen Yanpu |
| 作者单位： | Tong Ming Bian Zhengzhong Li Xiaohui Dai Qijun Chen Yanpu ( Xi'an Jiaotong University，Xi'an 710049) ( Xidian University，Xi'an 710049) (Xi'an Communication College，Xi'an 710106) |
| 基金项目： | the National Natural Science Foundation of China (No.60071029) |
| 摘 要： | The perceptual effect of the phase information in speech has been studied by auditory subjective tests. On the condition that the phase spectrum in speech is changed while amplitude spectrum is unchanged, the tests show that: (1) If the envelop of the reconstructed speech signal is unchanged, there is indistinctive auditory perception between the original speech and the reconstructed speech; (2) The auditory perception effect of the reconstructed speech mainly lies on the amplitude of the derivative of the additive phase; (3) td is the maximum relative time shift between different frequency components of the reconstructed speech signal. The speech quality is excellent while td <10ms; good while 10ms< td <20ms; common while 20ms< td <35ms, and poor while td >35ms. |
| 关 键 词： | 语音信号 听知觉 相位谱 附加相 |
| 收稿时间： | 4 April 2003 |
Study on phase perception in speech |
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| Tong Ming Bian Zhengzhong Li Xiaohui Dai Qijun Chen Yanpu.STUDY ON PHASE PERCEPTION IN SPEECH[J].Journal of Electronics,2003,20(5):387-392. | |
| Authors: | Tong Ming Bian Zhengzhong Li Xiaohui Dai Qijun Chen Yanpu |
| Affiliation: | 1. Xi'an Jiaotong University, Xi'an 710049 2. Xidian University, Xi'an 710049 3. Xi'an Communication College, Xi'an 710106 |
| Abstract: | The perceptual effect of the phase information in speech has been studied by auditory subjective tests. On the condition that the phase spectrum in speech is changed while amplitude spectrum is unchanged, the tests show that: (1) If the envelop of the reconstructed speech signal is unchanged, there is indistinctive auditory perception between the original speech and the reconstructed speech; (2) The auditory perception effect of the reconstructed speech mainly lies on the amplitude of the derivative of the additive phase; (3) td is the maximum relative time shift between different frequency components of the reconstructed speech signal. The speech quality is excellent while td <10ms; good while 10ms< td <20ms; common while 20ms< td <35ms, and poor while td >35ms. |
| Keywords: | Speech signal Auditory perception Phase spectrum Additive phase |
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