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Description: 录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。
（1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。
（2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。
（3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。
-Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.)
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Size: 2048 |
Author: J |
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Description: FFT声音动态频谱，可以采集声音并对其进行动态频谱分析。-FFT Dynamic Spectrum Sound AppWizard has created this DSound application for you. This application not only demonstrates the basics of using the Microsoft Foundation classes but is also a starting point for writing your application.
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Size: 70656 |
Author: LIMING |
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Description: 基于Matlab的音频文件数字滤波处理。本文基于Matlab分析了wav声音文件频谱与声音的关系，并给出了不同采样频率对输出声音信号的影响。-Matlab-based digital filter processing of audio files. This analysis based on Matlab wav sound files and sound relationship between the spectrum and gives different output sampling frequency of the sound signals.
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Size: 371712 |
Author: beifang |
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Description: 1）语音信号的采集
2）语音信号的频谱分析
3）设计高通、低通数字滤波器和画出其频率响应
4）用滤波器对信号进行滤波
5）比较滤波前后语音信号的波形及频谱
6）播放原始语音信号
7）实现快放、慢放功能
8）实现回音音效效果
9）实现变高音、低音效果
10）设计GUI系统界面
-1) voice signal acquisition 2) speech signal spectrum analysis 3) design high-pass, low pass digital filter and plot its frequency response 4) filtering the signal with a filter 5) to compare the before and after filtering the speech signal waveform and spectrum 6) Play the original voice signal 7) to achieve fast, slow function 8) to achieve an echo sound effect 9) to achieve change treble, bass 10) GUI system interface design
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Size: 4856832 |
Author: 韩成瑶 |
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Description: 64*32点阵 声音频谱 温度计 遥控器 日历 stc12c5a40s2单片机-64* 32 dot matrix spectrum of the sound chip thermometer remote calendar stc12c5a40s2
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Size: 366592 |
Author: HaoLiu |
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Description: 该程序的主要功能是对心音信号进行AR功率谱分析，同时带有去噪功能。-The program' s main function is to heart sound signals AR power spectrum analysis, and with denoising function.
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Size: 47104 |
Author: mike |
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Description: 采集输入声音信号，经过系统滤波器以及频谱测量器的处理，在界面一上显示原声音滤波信号的时域和频域波形。界面二则是播放保存在原声音文件中的录音，遇到超时或者停止状况时，停止播放录音。-Collecting the input sound signal, and filter through the system' s processing spectrum measurements, the interface a display of the original sound signal filter time-domain and frequency domain waveforms. Interface, two are playing the original sound files stored in the recording experience time-out or stop position, the stop playing the recording.
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Size: 121856 |
Author: 浅浅 |
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Description: 用于产生m序列，它是扩频通信中最基本而且非常重要的一部分，对深入理解扩展频谱很有帮助。-These sound codes are used to generate m sequence, which is the basic and very important part of spread spectrum communication. And this will help you to understand the theory of spread spectrum .
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Size: 2048 |
Author: pdf |
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Description: Libraries for Sound Card Recording and Analysis in Real Time. Usefull for Oscilloscope or Spectrum Analyser or anything requiring live FFT analysis
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Size: 2413568 |
Author: Joxen |
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Description: 用于语音增强中的谱估计基本方法，针对音调较低，声音较沉闷的语音可以选用改进型的谱估计方法。-Spectrum estimation for speech enhancement in the basic method for tone lower than the dull sound of the voice can choose to use the improved spectral estimation method.
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Size: 1024 |
Author: xiaochong |
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Description: sound power spectrum control PC sound Output
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Size: 14336 |
Author: li |
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Description: 利用功率谱估计及ＩＦＴ数字滤波及短时傅里叶变换等手段对声音信号进行处理-Use of the means of power spectrum estimation and IFT digital filtering and short time Fourier transform , such as the sound signal processing
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Size: 287744 |
Author: wanghusangyi |
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Description: 1.用matlab实现对一个元音和一个清辅音的LPC系数，LPCC系数和MFCC系数的提取。
2，用LPC对这两个语音信号的功率谱进行估计，其中，LPC系数要分别有5阶，10阶，15阶和20阶四种情况，并在一个图里画出信号本身的FFT功率谱和四条不同阶数的LPC谱估计图，以作比较。注意，LPC和LPCC只考察自相关法。
3，用对数面积比的方法来求出这两个发音的变截面声管模拟图形，10阶即可-Using matlab to achieve the LPC coefficients of a vowel and a voiceless consonant, the extraction of LPCC Features coefficients and MFCC coefficients. LPC both the speech signal power spectrum estimate, which, LPC coefficients, respectively, five bands, 10 bands, 15 bands and 20 the first four cases, and draw a graph of the FFT power of the signal itself spectrum and four different orders of LPC spectral estimation map, for comparison. LPC and LPCC only examine the autocorrelation method. 3, the number of area ratio method to calculate the variable cross-section of the two pronunciation sound tube simulation graphics, 10 bands can be
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Size: 72704 |
Author: houjam |
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Description: MP3播放器是一种新兴的数字音乐播放器，播放MP3、WMA等格式的文件。通过用MPEG-1 Layer 3编码技术，可以得到大约12：1压缩的有损音乐信号。尽管MP3音乐是有损的，它在压缩过程中对功率谱较弱的信号有所丢失，但它同CD原声区别不大，不影响一般音乐爱好者对音乐的欣赏。MP3大大缩小了声音文件的长度，使音乐的存储和传输更方便。-The MP3 player is a new digital music player, play MP3, WMA and other file formats. About 12:1 compression with MPEG-1 Layer 3 coding technology, can be detrimental to the music signal. Although the MP3 music is detrimental to the weak signal power spectrum has lost in the compression process, but it is not much different with the CD soundtrack, does not affect the general music lovers for music appreciation. MP3 greatly reduced the length of the sound files, and more convenient storage and transmission of music.
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Size: 377856 |
Author: welcome |
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Description: 用Labwindows/CVI开发的一个程序源码，能对计算机的声卡进行数据采集，并将采采集数据以波形方式在软件源码界面上实时显示出来，同时进行简单易懂的频谱分析. 可直接使用。
-Development of a program Labwindows/CVI source of the computer' s sound card for data acquisition and mining the collected data in real time displayed on the interface of the software source code waveform, while a simple spectrum analysis can be used directly.
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Size: 548864 |
Author: |
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Description: 基于PC及声卡的声音信号的采集与分析，可以保存成WAVV格式的声音信号，并可读取信号对其进行频谱，功率谱分析。
-Collection and analysis of the sound signal based on the PC and sound card, you can save the sound signal into WAVV format, and can read the signal spectrum, power spectrum analysis.
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Size: 154624 |
Author: lmargin |
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Description: 声音处理程序源码，通过FFTT能看声音的频谱.
-The sound handler source FFTT can see the spectrum of the sound.
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Size: 57344 |
Author: yoeooo |
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Description: 基于声卡的频谱分析仪，几个有意思的小程序合集（1）-Based on the sound card spectrum analyzer, a few interesting little collection procedures (1)
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Size: 461824 |
Author: jack |
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Description: 采用奇异谱主分量分析方法从病理心音信号中提取杂音成对四种常见的病理心音信号进行奇异谱分析，得到各主分量和经验正交函数，选择合适阶次重构正常心音成分和杂音成分。分。-The principal component analysis singular spectrum extracted from the pathological heart sound signals murmur pairs four common pathological heart sound signals Singular Spectrum Analysis, the main component and empirical orthogonal function, select the appropriate order reconfigurable normal heart sounds ingredients and noise components . Minutes.
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Size: 1467392 |
Author: 黄华 |
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Description: 读大学的时候，设计的一款声卡频谱分析仪，已经测试过的，很好用，希望对新手有帮助。-University at the time, the design of a sound card spectrum analyzer has been tested, with good, helpful to the novice.
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Size: 465920 |
Author: 赵帅 |
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