How to split a audio wav file into different frequency bands?

Hi I have a 10s wav audio file and want to split it into different frequency bands, for example, file_1.wav only has 0-8kHz, file_2.wav only has 8-20kHz. Have any idea how to do this?

Thank you so much in advance.

[John BG]

Hi Pingfei

This is John BG [e-mail]

would you please be so kind to attach the audio file?

If too large can you split it and attach a portion?

Ready availability of input data helps readers supply satisfactory answers.

[Pingfei Jiang]

Hi John, thx for the reminder. I have edited the question with attached file.

[John BG]

Hi Pingfei Jiang

this is John BG <mailto:[e-mail] [e-mail]>

1.

Please try the following:

https://uk.mathworks.com/help/audio/examples/graphic-equalization.html?s_tid=srchtitle

2.

Define how many filters do you want, whether equally spaced, or log spaced (in frequency).

3.

The answer from Ballaney means 'perform the fft' but using a bank of filters only overlapping a small fraction of the bandwidth covered by each filter is the key to get your equalizer up and working.

Regards

John BG

<mailto:[e-mail] [e-mail]>

Answer 1

[Abhishek Ballaney]

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