| 语音增强用于坦克驾驶舱内无线语音通信 |
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| 引用本文： | 张睿,高勇.语音增强用于坦克驾驶舱内无线语音通信[J].电子工程师,2006,32(4):5-7,10. |
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| 作者姓名： | 张睿 高勇 |
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| 作者单位： | 1. 四川大学电子信息学院,四川省,成都市,610065
2. 四川大学电子信息学院,四川省,成都市,610065;重庆金美通信有限责任公司,重庆市,400030 |
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| 基金项目： | 四川大学校科研和教改项目 |
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| 摘 要： | 讨论了一种基于传统谱相减算法的改进方法。利用语音的短时平稳性,通过先验幅度比来连续更新噪声谱的估计,从而代替复杂的VAD(话音活性检测)。计算机仿真结果表明,这种改进方法有效抑制了噪声干扰,语音得到了增强,在极大地提高信噪比的同时,将残留的音乐噪声和语音失真保持在人耳听觉容忍的范围以内,从而较好的保持了语音自然度。
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| 关 键 词： | 无线语音通信 语音增强 先验幅度比 谱相减 |
| 收稿时间： | 2005-08-16 |
| 修稿时间： | 2005-08-162005-10-17 |
Voice Quality Enhancement Method Applied to Wireless Voice Communication in Tank Cockpit |
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| ZHANG Rui,GAO Yong.Voice Quality Enhancement Method Applied to Wireless Voice Communication in Tank Cockpit[J].Electronic Engineer,2006,32(4):5-7,10. |
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| Authors: | ZHANG Rui GAO Yong |
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| Affiliation: | 1. Sichuan University, Chengdu 610015, china; 2. Chongqing Jinme Communication Company Limited, Chongqing, 400030, China |
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| Abstract: | In this paper,an improved voice quality enhancement algorithm based on traditional spectrum subtraction method is discussed.Because of the short-time stationarity of speech,the noise spectrum estimation is updated by using priori amplitude ratio and results in no need of complicated voice activity detection.The simulation results show that this improved method can suppress the interference of noise and get enhanced speech quality.It keeps the residual music noise and audible speech distortion in the endurable range of man ear.The SNR can be improved greatly and ensure the naturalness of speech. |
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| Keywords: | wireless voice communication speech enhancement priori amplitude ratio spectrum subtraction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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