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A speech signal filterbank, using melscale frequency and framebanking.- 1. For speech signal can be represented as a discrete sequence of frames (or feature vectors) that can be used as the input to a speech recogniser. Important ideas and technique
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基于5402DSP和AIC23语音芯片的语音采集程序，实现语音输入，低通滤波和语音输出-5402DSP and AIC23 audio chip based on the voice capture program, voice input, speech output low-pass filtering and
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实现对数字音频的输入输出及噪音滤波增强处理等-Realize the digital audio input and output processing and noise filtering enhancement
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AVR 单片机制作的D类功放，用AVR 自带的AD采样音频输入，产生调制的PWM波，驱动功率H桥，然后滤波成放大的具有驱动能力的音频信号，驱动喇叭播放音乐。完全用程序实现，里面存有正弦波的数据，也可以输出正弦波。-AVR microcontroller produced by the Class D amplifier, the AVR AD sampling the audio input, to generate the modulation of PWM wave-driven power
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实现了DSP5416硬件开发板上的实时音频滤波效果，试验验证通过。音频由音频口输入，可在耳机输出口听到滤波之后的效果，以及电脑上录制处理之后的波形进行分析。-DSP5416 hardware development board to achieve a real-time audio filtering effect, experimental validation through. Audio from the audio input port can be heard in the head
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截取一段音频信号作为输入信号，分别通过低通，高通和带通滤波器，比较滤波效果。-Interception of an audio signal as an input signal, respectively, through a low pass, high pass and band-pass filter, compare filtering effect.
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设计音频降噪算法，并用MATLAB仿真实现。
1）读入一段音频后添加噪声，必须包括两种不同的噪声，信噪比：0dB~10dB；
2）分别采用滑动平均滤波器，直接频域滤波，以及谱分析后设计滤波器滤波三种方法实现，并对比效果。
3）给出各种方案的设计依据、代码、频响曲线，以及输入输出对比图。-Audio noise reduction algorithm design, and use MATLAB Simulation.
1) Read after adding noise int
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数字信号处理，重叠相加法对输入的音频信号进行平滑滤波。(Digital signal processing, overlapping addition to the input audio signal smoothing filtering.)
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用LabVIEW实现对输入音频滤波达到降噪效果后通过滤波处理，回复原正弦信号，欢迎参阅。。(LabVIEW to achieve the input audio filter to achieve noise reduction effect, through the filtering process, reply to the original sinusoidal signal, welcome to see..)
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实现了维纳滤波对语音信号的去噪，输入一段音频文件，取单声道，加噪声后进行滤波(Wiener filtering The Wiener filter is used to denoise the speech signal, input a segment of audio file, take the single channel, and filter the noise after adding the noise)
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