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10 changes: 5 additions & 5 deletions content/micropython/04.board-examples/nano-ble-sense/nano-ble-sense.md
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Original file line number Diff line number Diff line change
Expand Up @@ -221,14 +221,14 @@ Below example can be used with OpenMV's frame buffer window (top right corner).
```python
import image, audio, time
from ulab import numpy as np
from ulab import scipy as sp
from ulab import utils

CHANNELS = 1
SIZE = 256//(2*CHANNELS)

raw_buf = None
fb = image.Image(SIZE+50, SIZE, image.RGB565, copy_to_fb=True)
audio.init(channels=CHANNELS, frequency=16000, gain_db=80, highpass=0.9883)
audio.init(channels=CHANNELS, frequency=16000, gain_db=80)

def audio_callback(buf):
# NOTE: do Not call any function that allocates memory.
Expand Down Expand Up @@ -259,10 +259,10 @@ while (True):
raw_buf = None

if CHANNELS == 1:
fft_buf = sp.signal.spectrogram(pcm_buf)
fft_buf = utils.spectrogram(pcm_buf)
l_lvl = int((np.mean(abs(pcm_buf[1::2])) / 32768)*100)
else:
fft_buf = sp.signal.spectrogram(pcm_buf[0::2])
fft_buf = utils.spectrogram(pcm_buf[0::2])
l_lvl = int((np.mean(abs(pcm_buf[1::2])) / 32768)*100)
r_lvl = int((np.mean(abs(pcm_buf[0::2])) / 32768)*100)

Expand Down Expand Up @@ -330,4 +330,4 @@ from machine import Pin, SPI
spi = SPI(1, baudrate=1000000, polarity=0, phase=0, sck=Pin(18), mosi=Pin(23), miso=Pin(19))

print("SPI initialized")
```
```