annotate semiconginev2/audio/generators.nim @ 1256:bfb75c934f4e
add: window focus handling, improve window api a bit
| author |
sam <sam@basx.dev> |
| date |
Sun, 28 Jul 2024 17:33:41 +0700 |
| parents |
27cd1c21290e |
| children |
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| rev |
line source |
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1225
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1 proc sinewave(f: float): proc(x: float): float =
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2 proc ret(x: float): float =
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3 sin(x * 2 * Pi * f)
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4 result = ret
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5
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6 proc SineSoundData*(f: float, len: float, rate: int, amplitude = 0.5'f32): SoundData =
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7 let dt = 1'f / float(rate)
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8 var sine = sinewave(f)
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9 for i in 0 ..< int(float(rate) * len):
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10 let t = dt * float(i)
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11 let value = int16(sine(t) * float(high(int16)) * amplitude)
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12 result.add [value, value]
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