Fix automatic_model_training.ipynb for Python 3.12 / torchaudio 2.x compatibility

[Tinevagio]

torchaudio.set_audio_backend deprecated
torchaudio.info removed
generate_samples.py missing
AudioSet 404 → replaced by FMA
onnxscript missing for ONNX export

[Tinevagio]

Hi! I spent several hours trying to get this notebook working on Google Colab
in April 2026 and ran into multiple compatibility issues with Python 3.12 and
recent versions of torchaudio/torch_audiomentations.

This updated notebook fixes:

• torchaudio.set_audio_backend deprecated
• torchaudio.info removed in torchaudio 2.x
• generate_samples.py missing (not auto-generated anymore)
• AudioSet download returns 404 → replaced by FMA dataset
• onnxscript missing for ONNX export

Tested and working end-to-end, successfully trained "hey snowy" wake word model.

[Anshsurana123]

heyy!! how to use this fix??
cause i need to train a model by today itselff

[Anshsurana123]

m getting this error - Entraînement en cours...

❌ Erreur code 1
Traceback (most recent call last):
File "/content/openWakeWord/openwakeword/train.py", line 823, in
input_shape = np.load(os.path.join(feature_save_dir, "positive_features_test.npy")).shape[1:]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/dist-packages/numpy/lib/_npyio_impl.py", line 455, in load
fid = stack.enter_context(open(os.fspath(file), "rb"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/content/my_custom_model/jaag_ruut/positive_features_test.npy'

[Anshsurana123]

no worries, i built and updated the pipline

[Tinevagio]

hi, excuse me i was not connected fine if you found the solution it need to be import in google colab, and run the cells Le dim. 5 avr. 2026 à 10:51, Anshsurana123 ***@***.***> a écrit :

…

*Anshsurana123* left a comment (dscripka/openWakeWord#326) <#326 (comment)> no worries, i built and updated the pipline — Reply to this email directly, view it on GitHub <#326 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/B3BRQW3XSXWX2S77YHRSLT34UINBRAVCNFSM6AAAAACXMRLHL6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DCOBYGU2TKNBYG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Anshsurana123]

Do you have a working Colab link for the fixed notebook? I've been trying to train a custom wake word all day and hitting shape mismatch errors in data.py and train.py.

[Tinevagio]

i open the .ipynb file in a google colab Le lun. 6 avr. 2026 à 13:57, Anshsurana123 ***@***.***> a écrit :

…

*Anshsurana123* left a comment (dscripka/openWakeWord#326) <#326 (comment)> Do you have a working Colab link for the fixed notebook? I've been trying to train a custom wake word all day and hitting shape mismatch errors in data.py and train.py. — Reply to this email directly, view it on GitHub <#326 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/B3BRQWYLYWQLL5FVBRZ6ZTT4UOLSRAVCNFSM6AAAAACXMRLHL6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DCOJSGEYDMOBTGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>