Wwise SDK 2022.1.8
If you are working on a project that includes a firearm with a rapid rate of fire, such as a machine gun, it can be difficult to accurately synchronize the bullet sounds with the firing action. Because Wwise events are processed asynchronously on the audio thread, there might be a slight delay between the break action and the termination of a gunshot sound if you implement the sound through a Sample Accurate transition on a looping container.
To achieve a sample-accurate trigger rate with rapid gunshots, we recommend that you use MIDI to trigger each bullet sound.
PostMIDIOnEvent makes it possible to respect the exact offset (in samples) within a given audio frame, which allows for high accuracy.
A MIDI-based solution requires the following:
AK::SoundEngine::RenderAudio()yourself to place Play and Stop actions on the desired frame. Refer to the Audio Rendering Thread section in Optimizing CPU usage for details.
<WwiseInstallationFolder>\SDK\samples\IntegrationDemo\DemoMIDIMetronome.cppand the corresponding documentation is available at Integration Demo Sample (see the MIDI API section).