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A harmonizer is a type of pitch shifter that combines the transposed pitch with the original pitch to create a two or three note harmony. The Wwise Harmonizer 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. Alternatively, it can be used as a high-quality pitch shifter when simply not including any dry signal.
Choosing the window size parameter is an important step to obtain good quality results. While the default value (1024) should work well for most content, tuning this parameter is essential for obtaining the best pitch shifting effect with as little artifacts as possible. While larger window size settings give better frequency resolution, they have less accurate time-domain resolution and thus result in more smearing of transients signal. The window size parameter is thus a compromise between time resolution and frequency resolution.
The ideal window size setting is dependent on audio content where signals with lots of transients (e.g. punches, drums, explosions,etc.) may benefit from smaller window size settings while harmonic signals with more stable frequency content (e.g. voices, musical instruments, etc.) may work best with larger window size parameter values which provide more accurate frequency resolution.
The Wwise Harmonizer 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.
Interface Element |
Description |
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Name |
The name of the Effect instance. Effect instances are a group of effect property settings. They can be one of two types: custom instances or ShareSets. Custom instances can be used by only one object, whereas ShareSets can be shared across several objects. |
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Displays the object's color. Clicking the icon opens the color selector. Select a color to apply it to the object.
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Inclusion |
Determines whether the element is included or excluded. When selected, the element is included. When unselected, the element is not included. By default, this applies across all platforms. Use the Link indicator (to the left of the check box) to determine or to set platform-specific customizations. When this option is unselected, the property and behavior options in the editor become unavailable. Default value: true |
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Indicates the number of elements in your project that contain direct references to the object. The icon is displayed in orange when references to the object exist, and in gray when no references exist. Selecting the button opens the Reference View with the object's name in the References to: field. |
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Notes |
Additional information about the Effect. |
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Metering |
Indicates the name of the object currently being metered. |
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Allows you to browse for other objects to meter.
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Sets the display of the Effect Editor's selected tabs. By default, there is one panel displaying only one selected tab. You can, however, click a splitter button to split the panel into two, either side by side or one on top of the other, for two different tabs. The currently selected option is highlighted with a background color.
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Input |
This parameter determines which channels will be processed by the harmonizer. Values:
Default value: As Input |
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Process LFE |
This parameter determines if the LFE channel will be processed by the harmonizer. Default value: false |
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Window Size |
Larger window size gives better frequency resolution but more smearing of transients. This parameter is thus a compromise between time resolution and frequency resolution. See section above for a more detailed discussion on how to choose the value for this parameter. Default value: 1024 |
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Delay Dry |
Determines whether the dry signal should be delayed to preserve synchronization with the harmonized (wet path).
Default value: true |
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Harmonizer Voice Parameters | ||||
Voice Enable |
Determines whether a given pitch voice is enabled.
Default value: false |
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Pitch Shift |
The pitch is raised or lowered by the amount specified by this parameter (in cents). +1200 Cents is thus transposed an octave up and -1200 is an octave down. Default value: 0 |
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Voice Gain |
The amount of gain applied to a given harmonized voice. Allows to set a balance between different harmonized voices. Default value: 0 |
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Voice Filter Parameters | ||||
Voice Filter Type |
Determines the type of filtering that can be applied to the harmonized voice signal. The following filters are available:
Default value: None |
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Voice Filter Gain |
The amount of the amplification of the harmonized voice signal for the selected frequency band. Increasing this value “boosts” the audio signal. Decreasing this value “cuts” or attenuates the audio signal.
Default value: 0 |
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Voice Filter Frequency |
The portion of the frequency spectrum that will be affected by the gain. Default value: 1000 |
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Voice Filter Q Factor |
The area around the center frequency that will be affected by the change in gain. A low Q value means that the bandwidth range will be wide, and conversely a high Q value means that the bandwidth range will be narrow. This control is not available when the Low Pass, High Pass, Low Shelf, and High Shelf curves have been selected. Default value: 1 |
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Output Levels | ||||
Dry Level |
Gain applied to unprocessed signal. Default value: 0 |
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Wet Level |
Gain applied to harmonized voices signal. Default value: 0 |
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