Animating with the Channel Editor > Animation > Generating Keyframes Based on Audio Analysis > 
Mapping Settings
 
 
 

The following settings are available in the Mapping submenu.

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(a) Audio Level Indicator (b) Tracking Mode box (c) Listening Mode box   

Tracking Mode boxSelect the tracking mode. In Amplitude tracking mode, a keyframe is generated at each frame, following the envelope of the audio signal. In Transient tracking mode, a keyframe is generated for each audio transient (sudden rise in amplitude), provided that the signal rises above the specified threshold.

Listening Mode boxSelect Pre Filter (the audio as it was imported) or Post Filter (the audio with any changes made) monitoring when playing back the audio media. This setting does not affect the analysis.

Link To Channel buttonEnable to map the tracked audio to the selected animation channel. An ‘a’ appears in the Channel hierarchy next to the name of the linked channel. Multiple channels can be selected simultaneously.

Channel Name fieldThis locked field displays the name of the selected channel being linked to the tracked audio. Multiple Channels is displayed if more than one channel is selected.

Min Value fieldDisplays the minimum value at which keyframes can be set in the linked channel.

Max Value fieldDisplays the maximum value at which keyframes can be set in the linked channel.

NoteThe minimum value can be higher than the maximum value to get an inverse mapping of the tracking mode in the animation channel.

Attack fieldDisplays the number of frames needed for the channel to reach the Max Value before a transient. Available only in Transient tracking mode.

Release fieldDisplays the number of frames needed for the channel to reach the Min Value after a transient. Available only in Transient tracking mode.

Threshold field(not shown) Displays the value at which a keyframe is generated each time the signal rises above it. Available only in Transient tracking mode.

TipStart with a high threshold, and lower it until all required peaks are detected.

Floor fieldDisplays the minimum level of the audio media to be considered for the analysis. This setting is typically used to remove analysis noise between audio transients. Available only in Amplitude tracking mode.

Inertia fieldDisplays the rate at which the signal decreases after a transient. In Transient tracking mode, the Release field can be increased to avoid the generation of several consecutive keyframes when the transient is not clearly defined in the input signal. Conversely, if the Release field is set to 0 ms, each transient rising above the threshold generates a keyframe, even if each occurs within a few milliseconds of another.

Audio Level IndicatorA visual representation of the audio level and the current Threshold or Floor value.

Reset boxSelect Reset to reset the Mapping submenu settings only. Select Reset All to reset all of the Audio tab settings.

NoteSome of the settings in the Mapping submenu are repeated in the Filtering submenu so that you do not to have to switch tabs to change the settings. The same settings are reflected in both submenus.