openmv/scripts/examples/10-Arduino-Boards/Nicla-Vision/02-Audio/micro_speech.py
iabdalkader df618ffb02 boards/NICLAV: Make MicroSpeech work on Nicla Vision.
* Add example for Nicla Vision.
* Update example comment.
* Fixes #1756
2022-12-04 20:34:42 +01:00

30 lines
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Python

# MicroSpeech demo.
#
# Download the pre-trained Yes/No model from here:
# https://raw.githubusercontent.com/iabdalkader/microspeech-yesno-model/main/model.tflite
# Save the model to storage, reset and run the example.
import audio, time, tf, micro_speech, pyb
labels = ['Silence', 'Unknown', 'Yes', 'No']
led_red = pyb.LED(1)
led_green = pyb.LED(2)
model = tf.load('/model.tflite')
speech = micro_speech.MicroSpeech()
audio.init(channels=1, frequency=16000, gain=24, highpass=0.9883)
# Start audio streaming
audio.start_streaming(speech.audio_callback)
while (True):
# Run micro-speech without a timeout and filter detections by label index.
idx = speech.listen(model, timeout=0, threshold = 0.78, filter=[2, 3])
led = led_green if idx == 2 else led_red
print(labels[idx])
for i in range(0, 4):
led.on(); time.sleep_ms(25)
led.off(); time.sleep_ms(25)
# Stop streaming
audio.stop_streaming()