Edge AI - Convert training speech data to micro feature.

In micro speech project we can use training data and convert it to micro feature so that we can test model accuracy in MCU without bothering MIC gain or signal chain issue.

Tensorflow provide a python script to generate feature from a input data.

Steps:

1. Download datasets.

2. Using tensorflow/tensorflow/examples/speech_commands/wav_to_features.py to convert input data. (!!Notice: Must use --preprocess=micro for tensorflow micro model comparability.

Here is my colab note book to generate 10 random feature with specific keyword.

Ref.

 1. https://stackoverflow.com/questions/701402/best-way-to-choose-a-random-file-from-a-directory

 2.https://github.com/tensorflow/tensorflow/blob/master/tensorflow/lite/micro/examples/micro_speech/train/README.md