mirror of
https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
Add Portenta audio examples.
This commit is contained in:
parent
8e14372d61
commit
b86171382a
44
scripts/examples/Arduino/37-Audio/audio_fft.py
Normal file
44
scripts/examples/Arduino/37-Audio/audio_fft.py
Normal file
@ -0,0 +1,44 @@
|
|||||||
|
import image, audio, time, array, math, ulab as np
|
||||||
|
from ulab import extras, numerical
|
||||||
|
|
||||||
|
SIZE = 512//4
|
||||||
|
pcm_buf = None
|
||||||
|
fb = image.Image(SIZE+50, SIZE, image.RGB565, copy_to_fb=True)
|
||||||
|
audio.init(channels=2, frequency=16000, gain=24, highpass=0.9883)
|
||||||
|
|
||||||
|
def audio_callback(buf):
|
||||||
|
global pcm_buf
|
||||||
|
if (pcm_buf == None):
|
||||||
|
pcm_buf = np.array(array.array('h', buf))
|
||||||
|
|
||||||
|
# Start audio streaming
|
||||||
|
audio.start_streaming(audio_callback)
|
||||||
|
|
||||||
|
def draw_fft(img, fft_buf):
|
||||||
|
fft_buf = (fft_buf / max(fft_buf)) * SIZE
|
||||||
|
fft_buf = np.vector.log10(fft_buf + 1) * 20
|
||||||
|
color = (0xFF, 0x0F, 0x00)
|
||||||
|
for i in range(0, SIZE):
|
||||||
|
img.draw_line(i, SIZE, i, SIZE-int(fft_buf[i]), color, 1)
|
||||||
|
|
||||||
|
def draw_audio_bar(img, level, offset):
|
||||||
|
blk_size = SIZE//10
|
||||||
|
color = (0xFF, 0x00, 0xF0)
|
||||||
|
blk_space = (blk_size//4)
|
||||||
|
for i in range(0, int(round(level/10))):
|
||||||
|
fb.draw_rectangle(SIZE+offset, SIZE - ((i+1)*blk_size) + blk_space, 20, blk_size - blk_space, color, 1, True)
|
||||||
|
|
||||||
|
while (True):
|
||||||
|
if (pcm_buf != None):
|
||||||
|
fb.clear()
|
||||||
|
fft_buf = extras.spectrogram(pcm_buf[0::2])
|
||||||
|
l_lvl = int((numerical.mean(abs(pcm_buf[1::2])) / 32768)*100)
|
||||||
|
r_lvl = int((numerical.mean(abs(pcm_buf[0::2])) / 32768)*100)
|
||||||
|
pcm_buf = None
|
||||||
|
draw_fft(fb, fft_buf)
|
||||||
|
draw_audio_bar(fb, l_lvl, 0)
|
||||||
|
draw_audio_bar(fb, r_lvl, 25)
|
||||||
|
fb.flush()
|
||||||
|
|
||||||
|
# Stop streaming
|
||||||
|
audio.stop_streaming()
|
||||||
24
scripts/examples/Arduino/37-Audio/micro_speech.py
Normal file
24
scripts/examples/Arduino/37-Audio/micro_speech.py
Normal file
@ -0,0 +1,24 @@
|
|||||||
|
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(25)
|
||||||
|
led.off(); time.sleep(25)
|
||||||
|
|
||||||
|
# Stop streaming
|
||||||
|
audio.stop_streaming()
|
||||||
Loading…
Reference in New Issue
Block a user