Write and play audio file

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John Hock 2018-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/418376-write-and-play-audio-file

回答： Kevin Chng 2018-9-14

Hi everyone I have some data and i am creating the audio file of that data using audiowrite command with the sampling frequency of 256 Hz.but when i try to play back the same audio file again it starts giving error of invalid sample rate. Will anyone please help how to resolve this issue Thanks

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John Hock 2018-9-12

Thanks @Kevin Now i want to re sample my data from 256 to 1024 hz using interpolation.Will you please help me in this regard

Walter Roberson 2018-9-12

在 MATLAB Online 中打开

resample(YourSignal, 4, 1)

is the easiest approach.

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回答（1 个）

Kevin Chng 2018-9-14

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在 MATLAB Online 中打开

Hi John Hock,

You may refer to the link below to check what is the minimum Hz can be play in your system or copy the code to test your system.

https://www.mathworks.com/matlabcentral/answers/396700-play-low-sampling-frequency-audio-in-matlab

foo = rand(1,1000);
for r = 80:8000; try sound(foo,r); fprintf('\nOk at %d!\n', r); break; catch ME; if mod(r,100)==0; fprintf('%d...', r); end; end; end