The Wwise Pitch Shifter plug-in can be used to change the pitch of an audio signal without affecting its duration. The plug-in can be used with complex polyphonic signals (i.e. not just voice for example) and allows pitch shifts upwards or downwards. It can also be used as a harmonizer when the dry signal is not completely attenuated (although the Wwise Harmonizer is the recommended solution for this).
Choosing the delay time parameter dictates the nature of artifacts that will heard using the algorithm. Short delay values can lead to amplitude modulations artifacts but do not suffer from distinct echo problem. On the other hand, using large delay values will no longer suffer from amplitude modulation problems and make the interval sound more in tune when compared to the dry signal on monophonic signals, but a distinct echo can be heard. Recommendation: A range between 10 ms to 100 ms is usually recommended for sounds that are just pitched (not harmonized). In those cases the echo is tolerable and high pitch resolution is not necessary since the original (dry) signal reference is not present.
The ideal delay time is dependent on audio content where signals with lots of transients (e.g. punches, drums, explosions,etc.) may benefit from smaller delay time settings while harmonic signals with more stable frequency content (e.g. voices, musical instruments, etc.) may work best with slightly larger delay time parameter values which provide more accurate frequency resolution.
Wwise Pitch Shifter Properties
The Wwise Pitch Shifter plug-in contains a series of properties, many of which can be edited in real-time and can be mapped to specific Game Parameters using RTPCs.
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