What is pitch in a wav file? How to create a pitch.m file from a wav.m file?
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Here's a little demo where I created a wave file using mathematical functions to vary the pitch and amplitude. Play around with the settings and see how the sound and appearance of the waveform are affected. Save the code as make_wav_file.m and run it.
% Program to create a wave file with variable amplitude and pitch. function make_wav_file() % Initialization / clean-up code. clc; % Clear the command window. close all; % Close all figures (except those of imtool.) clear; % Erase all existing variables. Or clearvars if you want. workspace; % Make sure the workspace panel is showing. format long g; format compact; fontSize = 20; % Create the filename where we will save the waveform. folder = pwd; baseFileName = 'Test_Wave.wav'; fullFileName = fullfile(folder, baseFileName); fprintf('Full File Name = %s\n', fullFileName); % Set up the time axis: t = 1:15000;
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