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How to amplify the signal?

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Jina Son
Jina Son am 11 Jul. 2019
Beantwortet: Star Strider am 11 Jul. 2019
I am so far using the wav files to filter the signal using Butterworth Filter so that I could remove the noise.
I want to amplify the sound so I could listen to the sound even strongly.
Is there any way that could be solved?

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Star Strider
Star Strider am 11 Jul. 2019
Multiply the vector or matrix by a constant greater than 1, and use the sound (not soundsc) function to listen to it.

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