53 lines
1.2 KiB
Python
53 lines
1.2 KiB
Python
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import serial
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import pyaudio
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import numpy as np
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import struct
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SERIAL_PORT = 'COM13' # Adjust to your port
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BAUD_RATE = 1500000
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BLOCK_SIZE = 512 # PCM bytes per block (128 stereo frames)
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MAGIC = 0xABCD # header marker
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RATE = 16000
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CHANNELS = 2
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p = pyaudio.PyAudio()
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stream = p.open(format=pyaudio.paInt16,
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channels=CHANNELS,
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rate=RATE,
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output=True)
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ser = serial.Serial(SERIAL_PORT, BAUD_RATE, timeout=1)
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print("Streaming audio...")
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try:
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while True:
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# Read 2‑byte header
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hdr = ser.read(2)
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if len(hdr) < 2:
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continue
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(magic,) = struct.unpack('<H', hdr)
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if magic != MAGIC:
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# Not aligned, skip and retry
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continue
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# Read PCM block
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data = ser.read(BLOCK_SIZE)
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if len(data) != BLOCK_SIZE:
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continue
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# Convert to int16 and play
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audio_data = np.frombuffer(data, dtype=np.int16)
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stream.write(audio_data.tobytes())
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except KeyboardInterrupt:
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print("Stopping audio stream...")
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finally:
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stream.stop_stream()
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stream.close()
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p.terminate()
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ser.close()
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