22 lines
1.1 KiB
Markdown
22 lines
1.1 KiB
Markdown
## FFT
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I found some cheap [AI Thinker ESP32 Audio Kit V2.2](https://docs.ai-thinker.com/en/esp32-audio-kit) on AliExpress and because I was tired of all the wires I had to connect to implement my different scenarios that are possible with my [Arduino Audio Tools Library](https://github.com/pschatzmann/arduino-audio-tools), I thought it to be a good idea to buy this board.
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<img src="https://pschatzmann.github.io/Resources/img/audio-toolkit.png" alt="Audio Kit" />
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You dont need to bother about any wires because everything is on one nice board. Just just need to install the dependencies
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The fast Fourier transform (FFT) can be used to determine the frequencies of a singal. More [details can be found in the Wiki](https://github.com/pschatzmann/arduino-audio-tools/wiki/FFT)
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### Note
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The log level has been set to Info to help you to identify any problems. Please change it to AudioLogger::Warning to get the best sound quality!
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## Dependencies
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You need to install the following libraries:
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- https://github.com/pschatzmann/arduino-audio-tools
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- https://github.com/pschatzmann/arduino-audio-driver
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