System/Library/Frameworks/GameplayKit.framework

GKMultiplyNoiseModifier.h

NSObject
>
GKNoiseModifier

@interface GKMultiplyNoiseModifier : GKNoiseModifier

- (id)init;
- (double)valueAt:(SEL)a0;
- (id)cloneModule;
- (int)requiredInputModuleCount;

@end