def _initialize_audio(self):
if self._audio is None:
self._audio = audioio.AudioOut(board.A1)
self._mixer = audiomixer.Mixer(voice_count=VOICE_COUNT,
sample_rate=16000,
channel_count=1,
bits_per_sample=16,
samples_signed=True)
self._audio.play(self._mixer)
sample_rate = wav.sample_rate
print('%d channels, %d bits per sample, %d Hz sample rate ' %
(wav.channel_count, wav.bits_per_sample, wav.sample_rate))
# Audio playback object - we'll go with either mono or stereo depending on
# what we see in the first file
if wav.channel_count == 1:
audio = audioio.AudioOut(board.A1)
elif wav.channel_count == 2:
audio = audioio.AudioOut(board.A1, right_channel=board.A0)
else:
raise RuntimeError('Must be mono or stereo waves!')
mixer = audiomixer.Mixer(voice_count=2,
sample_rate=sample_rate,
channel_count=channel_count,
bits_per_sample=bits_per_sample,
samples_signed=True)
audio.play(mixer)
# Clear all pixels
trellis.pixels.fill(0)
# Light up button with a valid sound file attached
for i, v in enumerate(SAMPLES):
filename = SAMPLE_FOLDER + v[0]
try:
with open(filename, 'rb') as f:
wav = audiocore.WaveFile(f)
print(
filename,
alt_button = DigitalInOut(board.A5)
alt_button.switch_to_input(pull=Pull.UP)
# ---ACCELEROMETER SETUP---
# Set up accelerometer on I2C bus, 4G range:
i2c = busio.I2C(board.SCL, board.SDA)
int1 = DigitalInOut(board.D6)
accel = adafruit_lis3dh.LIS3DH_I2C(i2c, int1=int1)
# ---SPEAKER SETUP---
enable = DigitalInOut(board.D10)
enable.direction = Direction.OUTPUT
enable.value = True
# Set up speakers and mixer. Stereo files, where music has empty right channel, FX empty left
speaker = audioio.AudioOut(board.A0, right_channel=board.A1)
mixer = audiomixer.Mixer(channel_count=2, buffer_size=2304, sample_rate=22050)
# ---NEOPIXEL SETUP---
pixel_pin = board.D5
pixel_num = 154
pixels = neopixel.NeoPixel(
pixel_pin, pixel_num, brightness=0.6, auto_write=False, pixel_order=neopixel.GRBW
)
# ^ change pixel_order depending on RGB vs. RGBW pixels
# ---Pixel Map---
# this is the physical order in which the strips are plugged
pixel_stripA = PixelSubset(pixels, 0, 18) # 18 pixel strip
pixel_stripB = PixelSubset(pixels, 18, 36) # 18 pixel strip
pixel_jewel = PixelSubset(pixels, 36, 43) # 7 pixel jewel
button_tones = [
"dtmf/tt_1.wav", "dtmf/tt_2.wav", "dtmf/tt_3.wav", "dtmf/tt_4.wav",
"dtmf/tt_5.wav", "dtmf/tt_6.wav", "dtmf/tt_7.wav", "dtmf/tt_8.wav",
"dtmf/tt_9.wav", "dtmf/tt_star.wav", "dtmf/tt_0.wav", "dtmf/tt_pound.wav"
]
digits_entered = 0 # counter
dialed = [] # list of digits user enters to make one 7 digit number
dialed_str = "" # stores the phone number string for dictionary comparison
audio = AudioOut(board.TX) # PWM out pin
mixer = audiomixer.Mixer(
voice_count=4,
sample_rate=22050,
channel_count=1,
bits_per_sample=16,
samples_signed=True,
)
audio.play(mixer)
mixer.voice[0].level = 1.0 # dial tone voice
mixer.voice[1].level = 1.0 # touch tone voice
mixer.voice[2].level = 0.0 # song/message voice
mixer.voice[3].level = 0.0 # busy signal
wave_file0 = open(dial_tone, "rb")
wave0 = WaveFile(wave_file0)
mixer.voice[0].play(wave0, loop=True) # play dial tone
wave_file2 = open(wrong_number, "rb")
wave2 = WaveFile(wave_file2)
with open(VOICES[0], "rb") as f:
wav = audiocore.WaveFile(f)
print("%d channels, %d bits per sample, %d Hz sample rate " %
(wav.channel_count, wav.bits_per_sample, wav.sample_rate))
# Audio playback object - we'll go with either mono or stereo depending on
# what we see in the first file
if wav.channel_count == 1:
audio = audioio.AudioOut(board.A1)
elif wav.channel_count == 2:
audio = audioio.AudioOut(board.A1, right_channel=board.A0)
else:
raise RuntimeError("Must be mono or stereo waves!")
mixer = audiomixer.Mixer(voice_count=4,
sample_rate=wav.sample_rate,
channel_count=wav.channel_count,
bits_per_sample=wav.bits_per_sample,
samples_signed=True)
audio.play(mixer)
samples = []
# Read the 4 wave files, convert to stereo samples, and store
# (show load status on neopixels and play audio once loaded too!)
for v in range(4):
trellis.pixels[(v, 0)] = DRUM_COLOR[v]
wave_file = open(VOICES[v], "rb")
# OK we managed to open the wave OK
for x in range(1, 4):
trellis.pixels[(v, x)] = DRUM_COLOR[v]
sample = audiocore.WaveFile(wave_file)
# debug play back on load!