Audio engineering

Uniform quantization in matlab

The following Matlab project contains the source code and Matlab examples used for uniform quantization. This MATLAB exercise illustrates the process of uniform quantization of a speech sample using a range of B-bits per sample, and displays the unquantized signal, the quantized signal and the error signal at the selected bit rate along with plots of signal and error power density spectrum, and the histogram of the quantization error signal.

This exercise designs an automatic gain control (agc) system for speech companding. in matlab

The following Matlab project contains the source code and Matlab examples used for this exercise designs an automatic gain control (agc) system for speech companding. . This exercise designs an automatic gain control system for a speech waveform based on short-time estimates of the speech signal variance (or equivalently, the short-time standard deviation).

Cepstral waterfall in matlab

The following Matlab project contains the source code and Matlab examples used for cepstral waterfall. This MATLAB exercise introduces the concept of creating so-called “Waterfall Plots” of frame-by-frame cepstrums/log magnitude spectrums of a time-varying signal such as a speech waveform.

Beltrami filter in matlab

The following Matlab project contains the source code and Matlab examples used for beltrami filter. It has been implemented based on this paper: J.J. Fernandez, J. M. (2010). Three-dimensional feature-preserving noise reduction for real-time electron tomography (Bd. 20). Madrid, Spain: Digital Signal Processing .

Ecg signal compression in matlab

The following Matlab project contains the source code and Matlab examples used for ecg signal compression. Amplitude Thresholding compression method used here in for ECG signal compression as presented on paper entitled as ECG signal compression with reconstruction via cubic spline approximation by Olga Malgina, Jana Milenkovi, Emil Plesnik, Matej Zajc, Andrej Košir and Jurij F.

Autocorrelation pitch detector in matlab

The following Matlab project contains the source code and Matlab examples used for autocorrelation pitch detector. This MATLAB exercise implements a pitch period detection algorithm using the modified autocorrelation method with a specified center clipping threshold. It analyzes a designated speech utterance on a frame-by-frame basis, using a center-clipped, modified correlation analysis method.

Two functions for smoothing denoising of triangular meshes in matlab

The following Matlab project contains the source code and Matlab examples used for two functions for smoothing denoising of triangular meshes. Part 1) Mean face normal filter for smoothing/denoising triangular meshes Reference: 1) Yagou, Belayev, Ohtake (2002) Mesh smoothing via Mean and Median Filtering applied to face Normals, PGMP - Theory and Applications 2) Zhang and Hamza, (2006) Vertex-based anisotropic smoothing of 3D mesh data, IEEE CCECE Acknowledgement: Q.

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