Location:
Search - echo reduction
Search list
Description: IntelIPP库语音处理源代码（包括回声抑制和噪声消除）-IntelIPP for voice processing source code (including echo suppression and noise reduction)
Platform: |
Size: 444201 |
Author: life |
Hits:
Description: IntelIPP库语音处理源代码（包括回声抑制和噪声消除）-IntelIPP for voice processing source code (including echo suppression and noise reduction)
Platform: |
Size: 443392 |
Author: life |
Hits:
Description: ATH3101 Datasheet
The ATH3101 is an integrated hands-free car kit IC that improves voice quality through
proprietary SoundClear® technologies: Acoustic Echo Cancellation, Noise Cancellation, Sound
Enhancement, and Side-tone Reduction.-The ATH3101 is an integrated hands-free car kit IC that improves voice quality through
proprietary SoundClear® technologies: Acoustic Echo Cancellation, Noise Cancellation, Sound
Enhancement, and Side-tone Reduction.
Platform: |
Size: 442368 |
Author: goodview |
Hits:
Description: Adaptive Echo Canceller Using a Modified LMS Algorithm
Abstract –– In this paper, an echo canceller is presented, using an adaptive filter with a modified LMS (Least Mean Square) algorithm, where this modification is achieved coding error on conventional LMS algorithm. simulation results, show a better convergence speed than conventional LMS algorithm, furthermore, Coded Error algorithm presents lesscomplexity for digital adaptive filters design, due to reduction of floating point operations.
Platform: |
Size: 1024 |
Author: venkat |
Hits:
Description: ：在深海采矿环境中超声波传输介质里存在着大量气泡、扰动沉积物、机械噪声等背景噪声与混响，导致有用信号与高
噪声信号迭加在一起，严重影响了测距精度。采用小波分析方法将超声回波信号进行3层小波分解，适当设置门限阈值对小波
系数进行处理，然后对信号进行重构，有效地抑制了信号中噪声对测量精度的影响。研究结果表明：小波方法有很好的降低回
波信号中噪声的效果，其测距精度高于自适应滤波去噪后的测距精度。-There are much background and mixture noise in the course of ultrasonic wave transmission under deep
sea mining environment，such as air bubbles and disturbed sediment and mechanical noise．Because of these factors，
the useful signals and the high noise signals are combined together，which seriously affects the distance measurement
precision．Ultrasonic echo signals are decomposed into three layer wavelets，and a threshold is set to process the
wavelet coeficients．Then the signals are reconstructed．Accordingly the influence of environment noise on distance
measurement precision is effectively restrained．Research resuhs indicate that wavelet transform method is very useful
for noise reduction in signals．Its precision is higher than that of the adaptive filtering method．
Platform: |
Size: 294912 |
Author: 王华 |
Hits:
Description: musicdsp source code archive-Analysis
Beat Detector Class
Coefficients for Daubechies wavelets 1-38
DFT
Envelope detector
Envelope Detector class (C++)
Envelope follower with different attack and release
Fast in-place Walsh-Hadamard Transform
FFT
FFT classes in C++ and Object Pascal
Frequency response from biquad coefficients
Java FFT
Look ahead limiting
LPC analysis (autocorrelation+ Levinson-Durbin recursion)
Magnitude and phase plot of arbitrary IIR function, up to 5th order
Measuring interpollation noise
QFT and DQFT (double precision) classes
Simple peak follower
tone detection with Goertzel
Tone detection with Goertzel (x86 ASM)
Effects
2 Wave shaping things
Alien Wah
Band Limited PWM Generator
Bit quantization/reduction effect
Class for waveguide/delay effects
Compressor
Decimator
Delay time calculation for reverberation
DIRAC- Free C/C++ Library for Time and Pitch Manipulation of Audio Based on Time-Frequency Transforms
dynamic convolution
Early echo s with image-mirror techn
Platform: |
Size: 826368 |
Author: Alan Tang |
Hits:
Description: The (a) section of Figure 1 illustrates the Line Echo Canceller (LEC) residing in the access network where echoes occur. Other voice processing modules, such as Automatic Level Control (ALC) and Noise Reduction (NR), are shown merely for illustration purposes. On the terminal side, both acoustic and electrical echo can occur. If the voice terminal is a speaker telephone set with an open acoustical path from the speaker to the microphone, the effect of acoustical echo is combined with the effect of the network echo. Because there is only a miniscule delay between the electrical signal and its echo, the speaker/listener is exposed to an effect known as side tone. Typically, instead of mounting a LEC at the terminal, side tone circuitry is placed to control the amount of the returned energy. The (b) section of Figure 1 shows examples of echo canceller signals representing the following:
Platform: |
Size: 168960 |
Author: Alex |
Hits:
Description: 是一个集声音编辑，播放，录制，和转换的音频工具，体积小巧，
功能却不弱。可打开的音频文件相当多，包括WAV, OGG, VOC, IFF,
AIF, AFC, AU, SND, MP3, MAT, DWD, SMP, VOX, SDS, AVI, MOV, APE
等音频文件格式，你也可以从 CD 或 VCD 或 DVD 或其它视频文件中提
取声音。内含丰富的音频处理特效，从一般特效如多普勒、回声、混响
、降噪到高级的公式计算(利用公式在理论上可以产生任何你想要的
声音)，效果多多。-Is a sound editing, playback, recording, and conversion of audio tools, compact, functional but not weak. Open quite a lot of audio files, including WAV, OGG, VOC, IFF, AIF, AFC, AU, SND, MP3, MAT, DWD, SMP, VOX, SDS, AVI, MOV, APE audio file format, you can also extract the sound from a CD or VCD or DVD or other video files. Contains a wealth of audio processing effects, from the general effects such as Doppler, echo, reverb, noise reduction to high-level formula (using the formula in theory can produce any sound you want), the effect of a lot.
Platform: |
Size: 1752064 |
Author: 胡哥 |
Hits:
Description: Adaptive filtering constitutes one of the core technologies in digital signal processing and finds numerous application areas in science as well as in dustry. Adaptive filtering techniques are used in a wide range of applications, including echo cancellation, adaptive equalization, adaptive noise cancellation, and adaptive beamforming. Acoustic echo cancellation is a common occurrence in today’s telecommunication systems. The signal interference caused by acoustic echo is distracting to users and causes a reduction in the quality of the communication. This paper focuses on the use of LMS and NLMS algorithms to reduce this unwanted echo, thus increasing communication quality. -Adaptive filtering constitutes one of the core technologies in digital signal processing and finds numerous application areas in science as well as in industry. Adaptive filtering techniques are used in a wide range of applications, including echo cancellation, adaptive equalization, adaptive noise cancellation, and adaptive beamforming. Acoustic echo cancellation is a common occurrence in today’s telecommunication systems. The signal interference caused by acoustic echo is distracting to users and causes a reduction in the quality of the communication. This paper focuses on the use of LMS and NLMS algorithms to reduce this unwanted echo, thus increasing communication quality.
Platform: |
Size: 1576960 |
Author: huan |
Hits:
Description: 很有价值的消回音降噪语音处理芯片，具体技术支持请联系郭生13189769580-Valuable noise reduction echo cancellation voice processing chip, specific technical support, please contact Guo Sheng 13189769580
Platform: |
Size: 442368 |
Author: 郭银光 |
Hits:
Description: Addition and multiplication of signals may favour Quality improvement, such as noise reduction, image enhancement, and echo cancellation
Platform: |
Size: 1024 |
Author: bkbiet |
Hits:
Description: The attached source code is the implemenation of acoustic echo canceller and noise reduction.
Platform: |
Size: 680960 |
Author: nana |
Hits:
Description: 设计一个简单的GUI界面，对导入的音频文件进行时域特性分析。计算其时域波形、平均幅度、短时能量、短时过零率。对该音频文件进行加噪处理，分析其时域波形变化。设定一个固定时长，对该音频添加回声并保存为“*.wav”格式文件。
对音频文件的时域分析是对音频文件进行传输、降噪及其他再编辑的基础。其中短时能量可用作清浊音区分的标准和语音起始点的判断。短时过零率可用作判断有声段与无声段和从背景噪声中提取语音信号。
-Design a simple GUI interface that time domain characteristics analysis on import audio files.Calculate the average time domain waveform, amplitude, short-time energy and short-time zero crossing ratio.Add to deal with the noise of the audio files, analyze the changes in the time domain waveform.To set a fixed time, to add the audio echo and saved as a *. Wav format file.
The time domain analysis of the audio file was transmitted to audio files, noise reduction and other editor again.The short-time energy voiced distinguish between standard and can be used as a clear voice starting point judgement.Short-time zero crossing ratio can be used as a judgment audio segment and silent segment and extract speech signal background noise.
Platform: |
Size: 52224 |
Author: liwan |
Hits:
Description: 计算目标和海洋回波的功率谱密度,最大信噪比的独立分量分析算法，用于特征降维，特征融合，相关分析等。- Calculating a target and ocean echo power spectral density, SNR largest independent component analysis algorithm, For feature reduction, feature fusion, correlation analysis.
Platform: |
Size: 7168 |
Author: ddjkn |
Hits:
Description: 三种降噪，回声和变调的语音信号处理，含UI界面-Three kinds of noise reduction, echo and tone of voice signal processing, including UI interface
Platform: |
Size: 5400576 |
Author: Leslie |
Hits:
Description: Including compression ratio, image restoration computing uptime and peak signal to noise ratio, For feature reduction, feature fusion, correlation analysis, Calculating a target and ocean echo power spectral density.
Platform: |
Size: 45056 |
Author: 徐宏卫
|
Hits: