Generate different types of audio-noise
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Given a general shape of a intensity-frequency relationship, I want to be able to generate a corresponding noise .wav file. Is there a way of doing this?
I would then like to produce similar graphs for audiofiles I have recorded.
EDIT: How do I change the PSD of noise?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1044480/image.png)
Thank you very much.
3 comentarios
Mathieu NOE
el 29 de Jun. de 2022
Hello Rowan
see the magnitude vs frequency shape - use that to create a FIR or IIR filter using invfreqs or invfreqz, then pass a white noise (random numbers) into that "shaping" filter and you're done !
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Eamon Gekakis
el 24 de Jun. de 2022
audiowrite might be a good solution here.
2 comentarios
Eamon Gekakis
el 24 de Jun. de 2022
Generally, a transfer function or filter stack will be used to "shape" the PSD data from my understanding, a combination of peak filters, bandpass filters, notches, etc.
This may be a useful write-up on matlab filter design, using the designfilt signal processing toolbox function.
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