MATLAB: Does the output sound using ‘audioplayer’ or ‘soundsc’ not match with the sound I recorded

MATLAB

I am recording an audio signal using a microphone connected to the data acquisition board Measurement Computing USB 1616-fs. I tried using both 'audioplayer' and 'soundsc' for playback, however the playback did not sound anything like what I recorded. How do I resolve this issue?

Best Answer

The sound could be dismorphed due to a sampling rate mismatch between the acquisition device and the playback device.

1. In the data acquisition session 's', check the sampling rate as follows:

>> s.Rate

2. Use 'Fs' argument to specify the same sampling rate when you use 'sound', 'soundsc' or 'audioplayer'.

Related Solutions

MATLAB: Does Multi Channel Audio with the MOTU UltraLite-mk3 does not work (audioDeviceWriter)

The correct syntax for this workflow is the following:

deviceWriter = audioDeviceWriter('SampleRate',Fs,'BitDepth','16-bit integer',...
'ChannelMappingSource',"Property",'ChannelMapping',1:8,'BufferSize',1024,...
'Driver','ASIO','Device','MOTU Audio ASIO');

Please use ASIO for multi-channel audio for this device.

MATLAB: Out of memory errors when using WVD function on a WAV file.

WVD is computationally expensive as it computes spectral content for each input sample.

To reduce the degree of oversampling in time we can use the smoothed pseudo Wigner Ville transform with a reduced number of time samples.

The following modifications to the code will resolve the error:

load handel.mat
filename = 'handel.wav';
audiowrite(filename,y,Fs);
[y,Fs] = audioread('handel.wav');
wvd(y,'smoothedPseudo',hamming(601),rectwin(305), 'NumTimePoints',310,'MinThreshold',-50) % specify NumTimePoints to reduce the degree of oversampling of WVD

Best Answer

Related Solutions

MATLAB: Does Multi Channel Audio with the MOTU UltraLite-mk3 does not work (audioDeviceWriter)

MATLAB: Out of memory errors when using WVD function on a WAV file.

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