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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 This module may be used for detection of audio tones. It uses the Goertzel
algorithm which is effectively a single-bin Fourier transform. See algorithm which is effectively a single-bin Fourier transform. See
[docs](./goertzel/README.md) [docs](./goertzel/README.md).
# 5. Module index # 5. Module index

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