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Iphone sound detection

Can someone tell me how to detect sound on iphone ....

Please help .... please provide any source code or link, if possible

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You can use AVAudioRecorder

http://mobileorchard.com/tutorial-detecting-when-a-user-blows-into-the-mic/

This tutorial really works for any sound ... it goes through the steps of creating a high-pass filter to try to detect only purge. You can change the values ​​to make it more sensitive to sound or less sensitive.

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Source: https://habr.com/ru/post/1781439/

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