Audio Data Structures¶
The following data types are used by After Effects to describe audio data.
Structure | Description |
---|---|
PF_SoundFormat |
Indicates whether the audio is in unsigned pulse code modulation (PCM), signed PCM, or floating point format. |
PF_SoundSampleSize |
Samples are in 1, 2, or 4 byte format. |
PF_SoundChannels |
Indicates whether the audio is mono or stereo. |
PF_SoundFormatInfo |
Contains the sampling rate, number of channels, sample size, and format of the audio to which it refers. |
PF_SoundWorld |
Use PF_SoundWorlds to represent audio.In addition to a PF_SoundFormatInfo , they contain the length of the audio, and a pointer to the actual audio data. |
PF_SoundFormat
, PF_SoundSampleSize
, and PF_SoundChannels
are all contained within a PF_SoundFormatInfo
.
PF_SoundWorlds
contain a PF_SoundFormatInfo
, and further instance-specific information.