Description: 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 techniques that are used in the assignment are the design of a (Mel frequency scale) audio filterbank, , windowing of a continuous audio signal, spectrum analysis of the signal, filtering as multiplication in the frequency domain, the visual representation of a speech signal as a spectrogram, appreciation of the acoustic variability in real speech utterances.
2. To gain a deeper knowledge of the application of MATLAB programming to audio signal processing.
3. To gain practice in the art of writing a formal report: structure, content, style, use of diagrams, presentation etc. etc.
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Size: 3072 |
Author:Yijian Lou |
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Description: 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 H-bridge, and then filtering into the amplified audio signal of the ability to drive, drive speakers play music. Entirely in the program, which there are data of the sine wave, sine wave output. Platform: |
Size: 17408 |
Author:杨剑 |
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Description: 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 headphone output after filtering effects, and recorded on a computer after the processing of the waveform analysis. Platform: |
Size: 124928 |
Author:马墨林 |
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Description: 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. Platform: |
Size: 1288192 |
Author:jeremy pang |
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Description: 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 into an audio, it must include two different kinds of noise, SNR: 0dB ~ 10dB
2) respectively moving average filter directly in the frequency domain filtering, and the filter is designed to achieve three methods filter after spectral analysis and contrast.
3) Give the design basis, code, frequency response curve, and input and output comparison chart of the various programs. Platform: |
Size: 1024 |
Author:Zhou Hong |
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Description: 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..) Platform: |
Size: 23552 |
Author:hujuyi7888
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Description: 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) Platform: |
Size: 3479552 |
Author:Joker298
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