Документация

frameLength = 256;
fileReader = dsp.AudioFileReader( ...
    'Counting-16-44p1-mono-15secs.wav', ...
    'SamplesPerFrame',frameLength);
deviceWriter = audioDeviceWriter( ...
    'SampleRate',fileReader.SampleRate);

scope = dsp.TimeScope( ...
    'SampleRate',fileReader.SampleRate, ...
    'TimeSpan',16, ...
    'BufferLength',1.5e6, ...
    'YLimits',[-1,1]);

reverb = reverberator( ...
    'SampleRate',fileReader.SampleRate, ... 
    'PreDelay',0.5, ...
    'WetDryMix',0.4);

while ~isDone(fileReader)
    signal = fileReader();
    reverbSignal = reverb(signal);
    deviceWriter(reverbSignal);
    scope(signal)
end

release(fileReader) 
release(deviceWriter)
release(reverb)
release(scope)

%% Real-Time Audio Stream Processing
%
% The Audio System Toolbox provides real-time, low-latency processing of
% audio signals using the System objects audioDeviceReader and
% audioDeviceWriter.
%
% This example shows how to acquire an audio signal using your microphone,
% perform basic signal processing, and play back your processed
% signal.
%

%% Create input and output objects
deviceReader = audioDeviceReader;
deviceWriter = audioDeviceWriter('SampleRate',deviceReader.SampleRate);

%% Specify an audio processing algorithm
% For simplicity, only add gain.
process = @(x) x.*5;

%% Code for stream processing
% Place the following steps in a while loop for continuous stream
% processing:
%   1. Call your audio device reader with no arguments to
%   acquire one input frame. 
%   2. Perform your signal processing operation on the input frame.
%   3. Call your audio device writer with the processed
%   frame as an argument.

disp('Begin Signal Input...')
tic
while toc<5
    mySignal = deviceReader();
    myProcessedSignal = process(mySignal);
    deviceWriter(myProcessedSignal);
end
disp('End Signal Input')

release(deviceReader)
release(deviceWriter)

%% Real-Time Audio Stream Processing
%
% The Audio System Toolbox provides real-time, low-latency processing of
% audio signals using the System objects audioDeviceReader and
% dsp.AudioFileWriter.
%
% This example shows how to acquire an audio signal using your microphone,
% perform basic signal processing, and write your signal to a file.
%

%% Create input and output objects
% Use the sample rate of your input as the sample rate of your output.
deviceReader = audioDeviceReader;
fileWriter = dsp.AudioFileWriter('SampleRate',deviceReader.SampleRate);

%% Specify an audio processing algorithm
% For simplicity, only add gain.
process = @(x) x.*5;

%% Code for stream processing
% Place the following steps in a while loop for continuous stream
% processing:
%   1. Call your audio device reader with no arguments to
%   acquire one input frame. 
%   2. Perform your signal processing operation on the input frame. 
%   3. Call your audio file reader with the processed frame
%   as an argument.
%    	Note: The file is named 'output.wav' and written to current folder by default. 

disp('Begin Signal Input...')
tic
while toc<5
    mySignal = deviceReader();
    myProcessedSignal = process(mySignal);
    fileWriter(myProcessedSignal);
end
disp('End Signal Input')

release(deviceReader);
release(fileWriter);

%% Real-Time Audio Stream Processing
%
% The Audio System Toolbox provides real-time, low-latency processing of
% audio signals using the System objects dsp.AudioFileReader and
% audioDeviceWriter.
%
% This example shows how to acquire an audio signal using
% dsp.AudioFileReader, perform basic signal processing, and play your
% processed signal using audioDeviceWriter.
%

%% Create input and output objects
% Use the sample rate of your input as the sample rate of your output.
fileReader = dsp.AudioFileReader('speech_dft.mp3');
deviceWriter = audioDeviceWriter('SampleRate',fileReader.SampleRate);

%% Specify an audio processing algorithm
% For simplicity, only add gain.
process = @(x) x.*5;

%% Code for stream processing
% Place the following steps in a while loop for continuous stream
% processing until dsp.AudioFileReader is done reading the file:
%   1. Call your audio file reader with no arguments to
%   read one input frame.
%   2. Perform your signal processing operation on the input frame. 
%   3. Call your audio device writer with the processed
%   frame as an argument.

while ~isDone(fileReader)
    mySignal = fileReader();
    myProcessedSignal = process(mySignal);
    deviceWriter(myProcessedSignal);
end

release(fileReader);
release(deviceWriter);