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Add tone detection using Goertzel algorithm.

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Peter Hinch 2025-02-06 11:12:12 +00:00
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README.md
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@ -399,7 +399,7 @@ work at global locations and timezones. See [docs](./astronomy/README.md).
This module may be used for detection of audio tones. It uses the Goertzel
algorithm which is effectively a single-bin Fourier transform. See
[docs](./goertzel/README.md)
[docs](./goertzel/README.md).
# 5. Module index

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goertzel/README.md
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@ -1,5 +1,5 @@
# Tone detection
The `goertzel3.py` implementation was written for the Pyboard but could be
adapted for other platforms. It includes test tone generation. See code
comments for more details.
The [goertzel3.py](https://github.com/peterhinch/micropython-samples/blob/master/goertzel/goertzel3.py)
implementation was written for the Pyboard but could be adapted for other
platforms. It includes test tone generation. See code comments for more details.