The Audio Panel sets the audio volume, and lets you choose which CHOP provides the audio waveform data for the animation timeline for lip syncing. You can access the Audio Panel it by selecting it from the Windows drop-down menu or by pressing Alt + I.
This panel controls the audio that Houdini provides to the operating system. The operating system may do further processing or volume adjustment to the data before sending it to the speakers.
|Audio output controls|
Output audio on only one channel.
Lock the volumes of the left and right channels together (changing one changes the other). When this option is off, you can set the volumes of the left and right audio channels independently.
Turns on the live-updating VU meter.
Displays the current volume of CHOPs audio output. The green area represents output between -1 and +1. The red zone represents output outside -1 to +1, indicating the waveform is being clipped.
|L and R|
Control the volume of the left and right audio channels. When the Tie checkbox is on, these sliders are locked together.
Get the audio output from a channel operator (CHOP). Click the + icon to choose the CHOP from your network hierarchy.
Get the audio output from a sound file. Click the + icon to choose the file.
|Audio Second ... is at Frame|
When the audio source is File, you can use these options to sync the sound file to your animation. To start the output later in the sound file, increase the Audio Second option. To start the output later in the animation, increase the is at Frame option.
You can also use the audiopanel HScript command to control audio output.