24 lines
450 B
Bash
Executable File
24 lines
450 B
Bash
Executable File
#!/bin/sh
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n=3
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case "$5" in
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LOW) n=1 ;;
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NORMAL) n=3 ;;
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CRITICAL) n=5 ;;
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esac
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lock=/tmp/.beep-lock
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test -f $lock && exit 1
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touch $lock
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python -c "
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import sys, numpy as np
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t = np.arange(0, 0.25, 1/48000)
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for i in range($n):
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tone = np.random.choice([0,3,5,6,7,10,12])
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note = 0.8 * np.sin(np.pi * 650 * 2**(tone/12) * t)
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sys.stdout.buffer.write(np.int32(2**31 * note).tobytes())
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" | aplay -c 1 -f S32_LE -r 48000 -Dbeep
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rm -f $lock
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