echo speech
英 [ˈekəʊ spiːtʃ]
美 [ˈekoʊ spiːtʃ]
网络 演讲回声
双语例句
- His comments echo Mr Putin's speech and reflect widespread unease at what is seen as Washington's attempt to create a unipolar world and a readiness to use force, as in Iraq.
科萨切夫的言论与普京的演讲相互呼应，反映出对美国做法的普遍不安，即认为美国正试图创建一个单极世界，并且随时准备像在伊拉克那样动用武力。 - The computer simulations confirm that the novel modeling system can be widely applied to echo cancellation systems and speech enhancement systems.
计算机仿真表明，该建模系统在回声抵消、语音增强等领域均有很好的应用前景。 - After Echo Cancellation, the speech recognition correction rate and accuracy rate are improved by about 29% and 60% respectively.
回声抵消后，语音识别正确率和准确率分别提高约29%和60%。 - This paper introduces the design and implementation of 2/ 4 lines speech interface and echo canceller. This 2/ 4 lines speech interface includes A/ D, D/ A conversion, ADPCM coding and decoding, and adaptive echo canceller etc.
文章介绍了一种2/4线话音接口和回波抵消器的设计与实现方案，该方案实现了2/4线的话音接口，包括A/D、D/A变换，ADPCM编解码，自适应回波抵消等。 - IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。 - When it is used in echo cancellation, for non-stationary and strong relevant speech signal, and echo paths with long impulse responses, LMS algorithm directly realizes the estimation of echo path in time domain will result in over-stress burden of calculation and low convergence rate.
当用于回声抵消时，对非平稳强相关的语音信号激励和冲击响应持续时间很长的回波通道，LMS算法在时域直接实现收敛速度慢。 - NLMS ( normalized least mean square) algorithm is widely used in echo canceller. However, due to high correlation of speech signals, the performance of echo canceller based on NLMS is depressed.
NLMS算法是回声消除器中最常用的算法之一，然而语音信号的强相关性使NLMS（归一化最小均方）算法的收敛速度变慢。 - Because IP telephone systems employ the packet switching technology, the echo signals generated by the Hybrid due to the impedance mismatch usually experience longer transmitting delay, which significantly decrease the speech communication quality.
对于IP电话系统而言，由于采用了分组交换技术，由2/4线转换器阻抗不匹配而产生的回波在系统中传输的时延较长，这将加重回波对语音通信的影响。 - Near-end echo is harmful to speech quality in full-duplex analog scrambling sys-tems.
在全双工模拟置乱语音系统中，近端回波直接影响通话质量。 - The implementation of acoustic echo cancellation uses NLMS algorithm and it can reduce echo though designing adaptive FIR filter and speech detector;
对回声消除器的设计采用NLMS算法，通过设计自适应FIR滤波器和语音检测器达到回声消除目的； - An Adaptive Echo Canceller in Full-Duplex Analog Speech Secure System
一种全双工模拟话密系统的自适应回波抵消器 - Acoustic Echo Cancellation and Blind Speech Signal Separation along with the DSP Implementation
声回波对消与语音盲信号分离及其DSP实现 - A pre-whitening filter in front of the echo cancellation filter transforms human speech into something more "white noise" alike-the energy of high frequency signals is similar to the energy of low frequency signals.
因此，提出了一种新的算法，在回声消除器前端加一个预白噪声化滤波器，使语音信号更加类似白噪声，即高频信号的能量与低频信号的能量基本相等。 - Echo information hiding is a commonly-used method of speech information hiding.
回声信息隐藏是语音信息隐藏的一种常用方法。 - Under the conditions of the vehicle phone, video conferencing and other occasions, there are not only the existence of environmental noise, but also to an echo and reverb, so the traditional single-channel speech enhancement method look powerless.
在许多实际应用环境中，例如车载电话、视频会议等场合中，不仅存在环境噪声，而且还有回声和混响，这时传统的单通道语音增强方法的去噪效果往往不能够满足实际需求。 - However, because of compression and encrypting, transfer delay becomes longer, the echo path becomes longer and the correspondence quality of speech signal obviously drops, and we have to add an echo-canceller at the terminal of VoIP.
然而，IP电话由于压缩、加密等处理的延时和网络传输延时导致回声路径变长，使语音通信质量明显下降，必须在VoIP终端上必须增加回声消除技术。