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Speech Enhancement Based On AUnvoiced-Voiced Model
- 摘要：基于语音状态模型的语音增强算法是当前语音信号处理的研究热点。把通常的LPC语音模型修正后，将得到两个语音模型：时变AR 模型、时变双AR模型。但是利用这些模型增强语音时，都没有考虑到语音的清音、浊音区别。为此本文引入了语音清浊音状态空间模型，这种模型在描述语音方面比时变AR模型、时变双AR模型要强，而且物理含义明显 同时在用含噪语音信号预测纯净语音信号时，引入遗忘因子和粒子滤波算法以降低计算复杂性，减小运算量。实验证明，增强后的语音信号信噪比有一定提高．且优于传统的LPC模型.
Vocoder
- speech lpc vocoder 10
speech
- 运用matlab仿真实现语音增强和噪声消除的功能-Matlab simulation using voice enhancement and noise reduction features
yuyinbianma
- 讲述了语音编码的基本概念。 主要包括PCM、ΔM、CVSD、ADPCM、DCME-ADPCM、E-ADPCM、LPC等概念-Describes the basic concepts of speech coding. Include PCM, ΔM, CVSD, ADPCM, DCME-ADPCM, E-ADPCM, LPC concepts
Recognition-of-Phonemes-In-a-Continuous-Speech-Str
- Recognition of Phonemes In a Continuous Speech Stream By Means of PARCOR Parameters In LPC Vocoder A Thesis Submitted To the College of Graduate Studies and Research In Partial Fulfillment of the Requirements
m10824
- Speech Processing: LPC Exercise in MATLAB
New-Folder-(4)
- In this paper the analysis of the compression process was performed by comparing the compressed signal against the original signal. To do this the most powerful speech analysis and compression techniques such as Linear Predictive Coding (LPC) and Dis
New-Folder-(4)
- Low bit-rate speech coders are important in many critical communication systems such as military, police, fire departments, homeland security and other first responders. The need for elimination, reduction of the redundancy or irrelevant information
lpc
- This MATLAB exercise computes the log magnitude of the STFT of a specified frame of speech. Then, using the same frame of speech, the exercise computes LPC log spectral matches to the speech frame, using the autocorrelation method, the covariance
MELP
- 文基于LPC的自适应前后向量化技术,提出了一种可变速率的混合激励线性预测MELP语音编码算法.该算法中,采用当前语音帧(前向LPC)或前面某帧已合成语音帧(后向LPC)进行线性预测,当采用后向LPC时,只需传输时间序列编码,故减少了LPC系数的平均编码比特.计算机模拟表明,该算法与标准MELP算法合成的语音质量相当,但显著减少了LPC的传输带宽,从而明显降低了MELP平均编码速率.-VARIABLE-RATE MELP SPEECH CODER BASED ON ADAPTIVE FORWARD
MELPcodepaper
- 目前2.4kbps的混合激励线性预测 (MELP) 语音编码方法已经被确定为美国新的联邦语音编码标准.本文提出了一种改进的MELP语音编码方法,利用滤波器相似度和基于LPC系数分类的矢量量化技术,可以把MELP的码率降到1.7kbps以下,仍有较好的合成语音质量.-An Improved MELP Speech Coder