Mixer¶
lib_xua supports audio mixing functionality with highly flexible routing options.
Essentially the mixer is capable of performing 8 separate mixes with up to 18 inputs at sample rates up to 96kHz and 2 mixes with up to 18 inputs at higher sample rates.
Inputs to the mixer can be selected from any device input (USB, S/PDIF, I2S etc) and outputs from the mixer can be routed to any device output (USB, S/PDIF, I2S etc).
See Digital mixer for full details of the mixer including control.
Basic configuration of mixer functionality is achieved with the the defines Table 25.
Define |
Description |
Default |
|---|---|---|
|
Enable mixer |
|
|
Number of separate mix outputs to perform |
|
|
Number of channels input into the mixer |
|
Note
The mixer threads always run on the tile defined by AUDIO_IO_TILE