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用LPC213X系列的PWM来产生语音。语音数据来源于PC机转换后得到的。最大可以是16位的。
由于是PWM所以输出端口需要低通滤波才能够得到比较干净的声音。
可以经过修改使用LPC2132以上的ARM的D/A来产生。
This project outputs audio on PWM0 using wave samples that are stored in the on-chip Flash ROM. -LPC213X series used to generate th
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采用TMS320VC5402实现一个16阶低通滤波器,音频接口采用的是AD50,汇编语言编写-TMS320VC5402 used to achieve a 16 band low-pass filter, Audio interface is AD50, the compilation of language
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For USB program, low pass filter for audio,Audio low-frequency Pass filter.-For USB program, low pass filter for audio, Audio low-frequency Pass filter.
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一个GUI,低通滤波器,可以滤除音频信号的噪声部分,参数可以自己设定。基本原理采用多种不同滤波器进行比较-A GUI, low-pass filter, to filter out the noise part of the audio signal, the parameter can be set. The basic principles of using a variety of different filters are compared
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matlab的滤波器,有菜单选择,高通,带通和低通,并且内有一个音频文件,matlab filter, there is the menu selection, high-pass, band-pass and low pass, and inside there is an audio file
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直接运行MAIN文件。对音频文件滤波,完成低通和高通滤波,并保存为WAV文件。,Run directly MAIN file. Filtering of the audio file to complete the low-pass and high-pass filter, and save it as WAV files.
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一个用C语言程序实现读写语音文件的语音信号低通滤波例子-A C language program used to read and write audio files of voice signal low-pass filter example
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先采集一单声道音频信号(.wav)并用WAVREAD文件采样读取,并对其进行频谱分析。分别用窗函数法和双线性变换法设计低通、高通、带通三种FIR滤波器和IIR滤波器。用M文件使信号通过滤波器并对输出信号进行时域和频域分析。-First acquisition of a mono audio signal (. Wav) files with sampling WAVREAD read, and their spectral analysis. Window function, respectiv
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1)设计Butterworth型音频抗混叠滤波器;
2)参数:
下通带频率300Hz;上通带频率3400Hz;
下阻带频率280Hz;上阻带频率3600Hz;
通带最大衰减0.3dB;
阻带最小衰减40dB;
3)采用一低通滤波器和一高通滤波器级联;
4)分别确定LPF和HPF的性能指标;
5)求出两滤波器的系统函数和频率响应,并画出其幅频特性曲线;
6)求整个滤波器的系统函数和频率响应,并画出其幅频特性曲线。-1) the design of Butterw
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音频信号处理,主要完成对于音频信号的滤波,内含自己编写的低通、高通和带组数字滤波器源码-Audio signal processing, mainly to complete the filtering for audio signals, including the preparation of their own low-pass, high-pass digital filter and source code with group
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基础的音频处理matlab程序,设计巴特沃斯低通数字滤波器实现滤波。-Matlab-based audio processing procedures, Butterworth low-pass digital filter designed to achieve the filtering.
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采用FFT和低通滤波器的两种语音除噪算法比较,MATLAB编程,附效果图-Using FFT and low pass filter audio noise canceling algorithm for the two compare, MATLAB programming, with a results map
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dsp语音滤波程序 低通滤波 效果良好-dsp audio filter low-pass filtering effect of a good program
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通过mydaq实现音频信号输入和低通滤波-to achieve the audio signal input and the low pass filter by mydaq
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Object-C 单声道音频合成
单声道,振荡器模块
双振荡器
方形,三角形,锯齿,反向锯齿波
倍频选择,支持5个八度
音符间滑行(滞处理器)
振荡器细齿(多个倍频程)
振荡器同步
低通滤波器模块
调制模块
tremelo/ WAVE
颤音/硬沥青
过滤
包络发生器模块
支持的ADSR(攻击,衰减,保持,释放)
体积
滤波器(低通滤波器的数量)-Object-C mono audio synthesis
Features
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对一段语音信号进行加噪处理,然后用低通滤波、带通滤波、高通滤波对其进行处理,程序完美运行,但要注意音频文件的路径问题,否则运行会报错!-A voice signal plus noise, then low-pass filter, band pass filter, high pass filter processing, the program works perfect, but to pay attention to the audio path to the file, otherwi
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本设计采用TMS320F28234 DSP芯片,设计了一台音频频率数字扫频仪。系统由扫频信号产生及调理模块、帯阻网络模块、幅频特性测试模块、数字幅频均衡模块以及人机交互模块组成。扫频信号由DSP内部PWM模块产生经外部有源低通滤波器进入带阻网络。应用数字信号处理技术在 DSP内部实现幅频特性测试,测试结果通过DSP的SCI在电脑显示器上显示,幅频均衡部分利用利用Matlab和基本部分中测得的陷波特性得出均衡算法中的滤波器的系数和阶数,然后在DSP内部对帯阻网络实现了均衡,完成了要求的各项指标。-
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A low-pass filter is a filter that passes low-frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. It
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对于原始音频信号进行高通、低通、带通、带阻滤波(含GUI文件),可以手动设置噪声信号,并对比染噪前和滤波后的信号区别。-For the original audio signal high-pass, low pass, band pass, band stop filter (with GUI files), you can manually set the noise signal, and compares the difference signal noise before transf
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低通滤波器对音频信号进行滤波并对其进行频谱分析-Low-pass filter for filtering the audio signal and its spectrum analysis
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