floatToPCM16LE clamps each sample to [-1,1] and encodes it as little-endian signed 16-bit PCM.
(samples []float32)
| 40 | // floatToPCM16LE clamps each sample to [-1,1] and encodes it as little-endian |
| 41 | // signed 16-bit PCM. |
| 42 | func floatToPCM16LE(samples []float32) []byte { |
| 43 | out := make([]byte, len(samples)*2) |
| 44 | for i, s := range samples { |
| 45 | if s > 1 { |
| 46 | s = 1 |
| 47 | } else if s < -1 { |
| 48 | s = -1 |
| 49 | } |
| 50 | v := int16(s * 32767) |
| 51 | out[i*2] = byte(v) |
| 52 | out[i*2+1] = byte(v >> 8) |
| 53 | } |
| 54 | return out |
| 55 | } |
| 56 | |
| 57 | // writeWAV24k writes samples as a finalized 24 kHz mono 16-bit WAV at dst. |
| 58 | func writeWAV24k(dst string, samples []float32) error { |
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