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examples/sinewave: Bug fix: Sinewave volume was too small

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This commit is contained in:
Hajime Hoshi 2019-01-20 02:17:10 +09:00
parent 10cb0bba5f
commit 7dafbb2e4e
1 changed files with 1 additions and 1 deletions
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2
examples/sinewave/main.go
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@ -68,7 +68,7 @@ func (s *stream) Read(buf []byte) (int, error) {
const length = int64(sampleRate / frequency) const length = int64(sampleRate / frequency)
p := s.position / 4 p := s.position / 4
for i := 0; i < len(buf)/4; i++ { for i := 0; i < len(buf)/4; i++ {
const max = (1<<15 - 1) / 2 const max = 32767
b := int16(math.Sin(2*math.Pi*float64(p)/float64(length)) * max) b := int16(math.Sin(2*math.Pi*float64(p)/float64(length)) * max)
buf[4*i] = byte(b) buf[4*i] = byte(b)
buf[4*i+1] = byte(b >> 8) buf[4*i+1] = byte(b >> 8)