Effects of adenotonsillectomy on speech spectrum in children 儿童扁桃体腺样体切除术对嗓音影响的研究
A new speech enhancement method based on multitaper spectrum method and wavelet thresholding is proposed so that a noisy speech power spectrum is obtained. 提出了基于多窗谱法和小波阈值法对带噪语音的短时功率谱进行估计的语音增强改进方法。
This paper presents a channel adaptation method named spectral adjusting ( SA) normalizes the distorted speech spectrum with a piecewise linear normalization function. 该文提出了一种新的信道自适应方法&频谱调整法。
Speech Enhancement Method of Auditory and Speech Spectrum Characteristics Applied in Speaker Identification 听觉特性和语谱特性在说话人识别中的应用
Aiming at the longer delay in the searching minimum of the noisy speech spectrum, a novel minimum band energy approach is proposed to speed up noise update. 针对传统搜索频谱最小值方法延迟较大的缺点,提出了最小频带能量算法,加快语音帧内大部分噪声的更新速度。
The effects of the noise source and its direction of Chinese speech average frequency spectrum on the intelligibility of Chinese speech were discussed in different room acoustical characteristics and signal-to-noise ratio ( SNR) conditions. 在不同室内声学特性、不同信噪比条件下探讨汉语语言平均频谱干扰噪声及其方向对汉语语言清晰度的影响。
MFCC can express speech spectrum more accurately at low frequency, so MFCC is a good method to express the spectral envelope in voice conversion; MFCC可以更加准确地表示语音低频处的频谱包络,在语音转换中是一种很好的频谱包络表示方法;
However the popular all-poles track model's parameters, which are calculated by LP method, can not provide a very accurate speech spectrum envelop. 现在比较流行的全极点声道模型的参数是通过线性预测(LP)方法来获得的,这种方法并不能提供一个很准确的语音谱包络;
This paper mainly discusses the speech enhancement algorithm based on the Minimum Mean Square Error ( MMSE) estimation of speech short time spectrum. 本文主要讨论基于语音短时谱估计的语音增强算法。
It reduces the music noise using the human auditory characteristics, and enhances the hearing quality using the speech spectrum distribution characteristics in the time-frequency dimension. 主要以谱减法为基础,结合人耳的听觉特性从而减少残留音乐噪声的影响;结合语音的语谱在时-频域分布特性从而提高增强后语音的听觉质量。
An Agonic algorithm of Speech Logarithm Spectrum Envelope 一种语音信号对数幅度谱包络的无偏算法
The result of experiments indicates, even the duration of speech have been doubled, the character of speech's frequency spectrum keep steady, few new noise is imported, speech will not be distorted, the effect of speech enhancement is favorable. 实验结果表明,在语音的持续时间延长1倍后,语音的频域特征基本保持不变,不引入大的附加噪声,语音不失真,对改善语音清晰度具有良好的效果。
Research of the specialization on speech spectrum about unilateral segmental-mandibular-defect and its reconstruction 下颌骨侧方节段性缺损及不同重建方法患者的语音频谱特征
In spectral subtraction, the contribution of the cross-terms of speech and noise spectrum is taken into account. Therefore, the residual noise in the enhanced speech is reduced effectively. 在谱减法阶段考虑了语音和噪声谱的交叉项,有效地减少了增强语音中的残余噪声;
A Speech Enhancement System Based on the Auditory Characteristics and the Speech Spectrum Characteristics 基于听觉特性及语谱特性的语音增强
Rejection of narrowband interference in speech based on spectrum subtraction smoothing 基于谱减平滑算法的语音窄带干扰抑制技术
FFT Technique on Speech Time-Varied Spectrum Analysis 语音时变频谱分析的FFT技术
An Algorithm for MFCC Based on Speech Spectrum Harmonic Samples Extraction 基于语音频谱包络抽取的MFCC算法
The experiment results show that the synthetic speech signal achieved in this paper is quite similar to the original speech signal on the frequency spectrum envelope character, the frequency domain character is much more close to human physiological characteristic. 实验结果表明:本方法获得的合成语音与原始语音在频谱包络特征上非常相似,频域特征更接近人耳的实际生理特性。
This paper studies the speech enhancement technology, and proposes an improved spectral subtraction method based on the auditory characteristics and the speech spectrum characteristics. 本文以语音增强为研究课题,提出基于人耳听觉特性和语音语谱特性的语音增强方法。
This paper discusses a kind of dynamic filter controlled by speech spectrum aiming at the serious entironment noise of coal mine underground, it can reduces noise infection to speech signal effectively and improves communication quality and increases communication distance. 针对煤矿井下严重的环境噪声影响,文章论述了一种受话音频谱控制的自适应动态滤波器。它可以有效地减小井下环境噪声对话音信号的影响,达到改善通信质量,增加通信距离的效果。
Speech spectrum analysis with a white-light optical processing technique 用白光光学处理技术实现语音的频谱分析
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. 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)。
In relative quiet environment authors use zero-crossing rate, short-time magnitude and speech duration parameters to realize endpoint detection. In noisy environment, authors use spectral enhancement method to get an approximate pure speech spectrum, realizing the endpoint detection task. 利用短时过零率、短时幅度和语音持续时间实现准静音环境下的端点检测,对语音频谱进行增强处理,实现噪音环境下的端点检测。
The details are as follows: Firstly, theory of HHT is discussed, its essence and merit in signal processing is shown, based on which, marginal energy is proposed, and used in emotional speech analysis together with marginal spectrum. 具体内容如下:详细论述HHT的原理,揭示其本质特征和用于信号处理的优点。在此基础上提出边际能量的概念,并将其与边际谱一起用于分析情感语音。
The minimum search of the noisy speech power spectrum is the foundation of noise estimation. 含噪语音短时功率谱的最小值搜索是噪声估计的基础。
Experimental results reveal that the proposed speech enhancement algorithm can improve recognition ratio on ASR system. A denoising algorithm based on multi-order autocorrelation was studied, which is used to retain the structure of speech frequency spectrum while suppressing the noise. 实验结果表明所提算法可以有效提高语音识别系统的识别正确率。研究了基于多次自相关运算的去噪算法,其目的是保证在去噪的同时而不改变语音信号的频谱结构。
Subtracting a noise spectral estimate from a noisy speech spectrum can therefore retrieve the spectrum of clean speech. 从带噪语音功率谱中减去噪声功率谱的估计值得到纯净语音功率谱。
The paper firstly analysis some methods which are not based on speech model, such as spectrum subtraction 、 wiener filter 、 subspace method. 语音增强的方法多种多样,本文分析了非基于语音参数模型的几种方法,包括谱减法、维纳滤波法和基于子空间的语音增强方法。
Incomplete palatopharyngeal patients speech spectrum spectral lines messy before training, rarely appears gap and filling straight strip, training patients after relatively than training before coloring deep and wide frequency band. 不完全性腭裂患者训练前语音频谱谱纹散乱,很少出现空隙及冲直条,训练后患者相对比训练前着色深,频带宽。