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I don't know what's the problem, can somebody help me, i don't know the exact length of myspeech/myrecord since it varies on how fast i read

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Jane 2024-1-14

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评论： Voss 2024-1-15

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Voss 2024-1-14

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Maybe you meant to name the variable returned by getaudiodata "mySpeech" instead of "y":

% y = getaudiodata(recObj);
mySpeech = getaudiodata(recObj);

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Jane 2024-1-15

@Voss Thank u for answering, I already figure it out. I just want to ask, what can I add in my code if I want to know the frequency and magnitude of mySpeech. Like, the frequency and magnitude will be shown in the command window like this:

Voss 2024-1-15

For frequency content you can use fft or see this for some options: https://www.mathworks.com/matlabcentral/answers/160059-finding-the-frequency-value-of-a-signal

For magnitude you can use abs(mySpeech) or mean(abs(mySpeech)).

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Binaya 2024-1-14

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Hi Jane,

It is my understanding that the variable passed in the "fft" function is not of correct datatype. "fft" functions expects datatypes of either double or single or int8 or int16 or int32 or uint8 or uint16 or uint32 or logical type.

Note - It is not clear what value mySpeech variable contains.

Please refer to the following MathWorks documentation for more information on the “fft” function:

https://www.mathworks.com/help/matlab/ref/fft.html

I hope this helps!

Regards

Binaya

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