Description: 录音音频，用来从话筒去录制音频。比较不错-Recording audio, used to record audio from the microphone. Comparison of good Platform: |
Size: 1214464 |
Author:张越 |
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Description: 对音频信号进行几种滤波，有汉明窗，切比雪夫，巴特沃斯等。可以输出时域和频域的对比图。-Several of the audio signal filtering, there is Hamming window, Chebyshev, Butterworth and so on. Can output time domain and frequency domain comparison of Fig. Platform: |
Size: 17408 |
Author:蒋毓 |
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Description: 音响系统的USB接口开发分析及主流芯片比较。越来越多的音响系统采用USB接口标准，同时市场上出现了各种USB芯片方案，如何选择合适的芯片方案来设计系统具有一定挑战性，设计工程师需要了解USB音响系统的架构、USB主流芯片的功能特性、控制模块的设计。-USB audio system interface chips mainstream development analysis and comparison. An increasing number of audio systems using USB interface standard, while the market appears on a variety of USB chip program, how to select appropriate programs to chip design system must have a challenging, design engineers need to understand the architecture of the USB audio system, USB mainstream chip functional properties, Design of the Control Module. Platform: |
Size: 25600 |
Author:hu |
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Description: 实现音频采集和频谱分析的程序，
包括录音，回放，显示波形，FFT频谱。
自己写的，所以比较简陋了，仅供参考。-Audio acquisition and spectrum analysis procedures, including recording, playback, display waveform, FFT spectrum. Wrote it myself, so it is a simple comparison. Platform: |
Size: 65536 |
Author:Pole JO |
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Description: 常见的语音与音频的编码格式与标准的比较，如gsm,speex,mp3,pcma,pcmu,g726等-Common voice and audio encoding format with the standard of comparison Platform: |
Size: 119808 |
Author:dair |
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Description: 巴特沃斯滤波器的MatLab代码实现，可以对一段音频进行滤波，与其他滤波器进行对比-Butterworth filter of the MatLab code for implementation can be some audio filtering, comparison with other filters Platform: |
Size: 1024 |
Author:zhanghailong |
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Description: 用双谱和小波变换去除信号中加性高斯噪声的相关程序
1.实现单个变量的双谱分析程序
2.用傅立叶反变换求自相关函数的程序
3.用fft求取喜好频谱、功率谱、均方根谱、对数谱的程序
4.读取.wav语音信号后用小波去加信白噪声的程序
5.用各种小波和阀值对同一信号去加性噪声效果比较的程序
-Double-spectral and wavelet transform to remove the signal plus Gaussian noise procedures 1. To achieve a single variable pairs of spectral analysis procedures 2. Using Fourier inverse transform procedures for seeking self-correlation function 3. To strike a preference to use fft spectrum , power spectrum, RMS spectrum, several spectra of the procedure 4. read. wav audio signal with wavelet plus a letter to the white noise process 5. with a variety of wavelet and threshold on the same signal to additive noise Comparison program Platform: |
Size: 5120 |
Author:沈玉杰 |
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Description: 录制一段个人的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；给定滤波器的性能指标，采用双线性变换法和窗函数法设计滤波器，并画出滤波器的频率响应；然后用自己设计的滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；回放语音信号；最后，设计一个信号处理系统界面。-Record a personal voice signal, and recording the signal is sampled draw sampled speech signal time-domain waveform and frequency spectrum for a given filter performance, the bilinear transformation and design of filter window functions and draw the frequency response filter then filter of their own design collection of the signal filtering, to draw the filtered signal in time domain waveforms and frequency spectrum, and filtering the signal before and after comparison, analysis of signal changes playback audio signals Finally, a signal processing system interface design. Platform: |
Size: 6144 |
Author:liudan |
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Description: 电路中使用了锁相环音频译码器LM567。LM567是一种模拟与数字电路组合器件，其电路内部有一个矩形波发生器，矩形波的频率由5、6脚外接的R、C值决定。输入信号从3脚进入LM567后，与内部矩形波进行比较，若信号相位一致，则8脚输出低电平，否则输出高电平。8脚是集电极开路输出，使用时必须外接上拉电阻。
将LM567第5脚上幅值约为4V的标准矩形波，通过R1引至三极管VT1的基极，使接在VT1发射极的红外线发射管导通并向周围空间发出调制红外光。-PLL circuit used in the audio decoder LM567. LM567 is a combination of analog and digital circuit components, the circuit inside a rectangular wave generator, square wave frequency from 5,6 feet external R, C values of the decision. Input signals from 3 feet into the LM567, the comparison with the internal rectangular wave, if the same signal phase, the 8-pin output low, otherwise the output is high. 8-pin is open collector output, use an external pull-up resistor must be. Amplitude of the LM567 is approximately 5 feet, the standard rectangular wave 4V, cited by R1 to the base of transistor VT1, so connected to the VT1 launch tube infrared emitter to turn the space surrounding the issue of modulation infrared light. Platform: |
Size: 3401728 |
Author:scylla |
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Description: 蓝牙SBC标准音频压缩算法的c实现可以直接在工程完成WAV文件的编解码并对比-Bluetooth SBC standard audio compression algorithm c implementation can be completed directly in the project, and WAV files codec comparison Platform: |
Size: 2750464 |
Author:yy |
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Description: 本文以无线多媒体终端项目的需求为背景，提出了一种适用于嵌入式系统的媒体播放
器架构设计方案。论文给出了一种嵌入式系统中音视频同步的解决方案，有效的提高了嵌入
式媒体播放器软件的音视频同步性能，在此基础上设计并实现了基于 Linux/Qt 的嵌入式媒
体播放器，实现了基于 Qt 的嵌入式媒体播放器系统。 - In this thesis, based on the requirement of wireless multimedia terminal system, through
comparison of structure features of several popular media players, the author proposes a
framework for embedded media player. Also with emphasis on analysis of the existing audio and
video synchronization algorithms in MPEG-2, this method can enhance the performance of audio
and video synchronization of embedded media player. On this basis, the author designs and makes
media player based on Qt and embedded system. Platform: |
Size: 134144 |
Author:edward |
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Description: 对音频进行加噪滤波，然后比较处理性能。加高斯白噪声，不同滤波器进行滤波比较。-Adding noise to the audio filter, and then compare the processing performance. Adding Gaussian white noise, filtering comparison of different filters. Platform: |
Size: 1024 |
Author:悠哉 |
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Description: 应用基于LabVIEW的虚拟仪器的构建方法，搭建和开发了音频信号频
谱测试系统，并与传统音频频谱仪所测得的频谱进行比较。系统的研发成功，能
极大地提高了频谱测试的效率，保证了测试系统的准确性、稳定性及安全性，且
具有成本低廉和开发周期较短的特点，对设计和研发类似测试系统具有一定的推
广价值。同时，本文给出了系统软硬件的设计方案，做出了可行的解决方案。-Application based on LabVIEW virtual instrument approach to building structures and the development of audio signal spectrum measurement system, and with the traditional audio spectrum analyzer spectrum measured for comparison. The successful development of the system, can greatly improve the efficiency of spectrum testing to ensure test accuracy, stability and security, and has a low cost and shorter development cycle characteristic of the design and development of similar test system has a certain promotional value. Meanwhile, this paper presents the system hardware and software design to make a viable solution. Platform: |
Size: 7015424 |
Author:zhuyuanyuan |
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Description: The basis for this comparison is a song’ s musical ‘ fingerprint’ , which is computed by
clustering a set of spectral features represented by the Mel-Frequency Cepstral Coefficients
(MFCC) of the audio signal. This fingerprint not only uniquely identifies a musical piece it
also provides information about its musical characteristics.-The basis for this comparison is a song’ s musical ‘ fingerprint’ , which is computed by
clustering a set of spectral features represented by the Mel-Frequency Cepstral Coefficients
(MFCC) of the audio signal. This fingerprint not only uniquely identifies a musical piece it
also provides information about its musical characteristics. Platform: |
Size: 222208 |
Author:ahmed |
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Description: 数字音乐指纹提取的主耍目的是建立一种有效机制，用于比较2个音乐文件的听觉质量。提出一种基于小波包最优基分解的音
指纹提取算法，利用与音频内容密切相关的小波包系数，将其作为特征进行指纹提取。实验结果表明，该算法对MP3，WMA和RM压缩
噪声、Stirmark foraudio工具中常见的音频信号处理具有强鲁棒性，且在不同音乐之间具有较高可区分性。
关健词：数字音乐指纹；小波包变换；最优基；鲁棒性-The main playing digital music fingerprint extraction purpose is to establish an effective mechanism for the audio quality of the comparison of two music files. Proposed audio fingerprint extraction algorithm based on wavelet packet best basis decomposition, and audio content is closely related to the wavelet packet coefficients as the characteristic fingerprint extraction. The experimental results show that the algorithm compressed MP3, WMA and RM common noise, Stirmark foraudio Tools audio signal processing has strong robustness, and higher can distinguish between different music. Key words: digital music fingerprint wavelet packet transform optimal basis robustness Platform: |
Size: 295936 |
Author:寒雪 |
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Description: 新的AAC编码器，最高频宽达到20KHz,里面有与FAAC,neroAAC及经典的mp3编码lame编码后的音频时频图的比较，从时频图和听觉上，falabaaac都要稍好一些
支持windows与linux平台
更多代码及详细可访问
code.google.com/p/falab-New AAC encoder bandwidth up to 20KHz, which has a frequency diagram comparison with of FAAC, neroAAC classics mp3 encoder lame encoded audio from the time-frequency diagram and the aural, falabaaac should be slightly better some support for windows linux platform more code and more information, visit code.google.com/p/falab Platform: |
Size: 10434560 |
Author:罗龙智 |
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Description: A fast & simple tool to compare two binary files, focusing on small sequences of added or removed bytes. The main purpose was to detect changes in an audio transmission, resulting from the clock drift of several gateways the audio stream was passed through.
Most binary file comparison tools are slow when it s about comparing large files that have many small differences where bytes are added or removed. Platform: |
Size: 13312 |
Author:Destiny |
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Description: 1、根据干扰总功率要求，在PSK调制信号带宽内产生单音干扰和多音干扰信号，并叠加到产生的信号源上。
2、将收到干扰的信号进行频率搬移到基带，然后通过匹配滤波器以及解调过程得到信息，统计误码率并与真实信息的解调误码率进行对比，评估音频干扰对PSK信号的干扰效果。
-1, according to the total power requirement of interference generated tone signal interference and multi-tone interference in the PSK modulated signal bandwidth, and superimposed on the signal generated by the source. 2, the received interference signal to a baseband frequency shift, and the information obtained by the matched filter and a demodulation process, statistical error rate BER and the true information demodulation comparison, evaluation of the PSK signal, audio interference interference effects. Platform: |
Size: 1024 |
Author:启政 |
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Search - audio comparison