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Audio

Type: Audio

A buffer of floating-point audio.

Fields

  • size: val
    • frame: byte - Number of channels per frame.
    • chunk: byte - Number of frames per chunk.
    • count: half - Number of chunks.
  • addr: ptr[float] - Interleaved samples; List of size.frame * size.chunk * size.count 32-bit floats.
  • rate: int - Sample rate of the audio (hertz)
  • config: opt[Positions] - Custom channel position configuration, default is FLAC/SMPTE/ITU-R recommendations.

FLAC/SMPTE/ITU-R recommendations

  • 1 Channel: Mono (Mono)
    1. (0, 0, 0, 0)
  • 2 Channels: Stereo (Left, Right)
    1. (-1, 0, 0, 0)
    2. (1, 0, 0, 0)
  • 3 Channels: Surround 3.0 (Left, Right, Center)
    1. (-1, 0, 0, 0)
    2. (1, 0, 0, 0)
    3. (0, 0, 0, 0)
  • 4 Channels: Surround 4.0 (FrontL, FrontR, SurroundL, SurroundR)
    1. (-0.5, 0, 0.8660254037844387, 0)
    2. (0.5, 0, 0.8660254037844387, 0)
    3. (-0.9396926207859084, 0, -0.3420201433256687, 0)
    4. (0.9396926207859084, 0, -0.3420201433256687, 0)
  • 5 Channels: Surround 5.0 (FrontL, FrontR, Front, SurroundL, SurroundR)
    1. (-0.5, 0, 0.8660254037844387, 0)
    2. (0.5, 0, 0.8660254037844387, 0)
    3. (0, 0, 1, 0)
    4. (-0.9396926207859084, 0, -0.3420201433256687, 0)
    5. (0.9396926207859084, 0, -0.3420201433256687, 0)
  • 6 Channels: Surround 5.1 (FrontL, FrontR, Front, Lfe, SurroundL, SurroundR)
    1. (-0.5, 0, 0.8660254037844387, 0)
    2. (0.5, 0, 0.8660254037844387, 0)
    3. (0, 0, 1, 0)
    4. (0, 0, 0, 1)
    5. (-0.9396926207859084, 0, -0.3420201433256687, 0)
    6. (0.9396926207859084, 0, -0.3420201433256687, 0)
  • 7 Channels: Surround 6.1 (FrontL, FrontR, Front, Lfe, Back, Left, Right)
    1. (-0.5, 0, 0.8660254037844387, 0)
    2. (0.5, 0, 0.8660254037844387, 0)
    3. (0, 0, 1, 0)
    4. (0, 0, 0, 1)
    5. (0, 0, -1, 0)
    6. (-1, 0, 0, 0)
    7. (1, 0, 0, 0)
  • 8 Channels: Surround 7.1 (FrontL, FrontR, Front, Lfe, BackL, BackR, Left, Right)
    1. (-0.5, 0, 0.8660254037844387, 0)
    2. (0.5, 0, 0.8660254037844387, 0)
    3. (0, 0, 1, 0)
    4. (0, 0, 0, 1)
    5. (-0.5, 0, -0.8660254037844387, 0)
    6. (0.5, 0, -0.8660254037844387, 0)
    7. (-1, 0, 0, 0)
    8. (1, 0, 0, 0)