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36 lines
902 B
Python
36 lines
902 B
Python
#!/usr/bin/env python3
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"""
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test_audioinput.py
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Records 2 seconds of audio from the default input device
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and saves the waveform as 'waveform.png' — works headless.
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"""
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import numpy as np
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import matplotlib
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matplotlib.use('Agg') # Headless backend
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import matplotlib.pyplot as plt
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import sounddevice as sd
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DURATION = 2 # seconds
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SAMPLERATE = 48000
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CHANNELS = 1
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print("🔊 Recording 2 seconds from default input device...")
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recording = sd.rec(int(DURATION * SAMPLERATE), samplerate=SAMPLERATE, channels=CHANNELS, dtype='float32')
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sd.wait()
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# Generate time axis
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time_axis = np.linspace(0, DURATION, len(recording))
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# Plot and save
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plt.figure(figsize=(10, 4))
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plt.plot(time_axis, recording, linewidth=0.5)
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plt.title("Audio Input Waveform")
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plt.xlabel("Time [s]")
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plt.ylabel("Amplitude")
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plt.grid(True)
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plt.tight_layout()
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plt.savefig("waveform.png")
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print("✅ Waveform saved as 'waveform.png'")
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