System/Library/PrivateFrameworks/VoiceActions.framework
AudioCaptureConfig.h
@class NSString;
@interface AudioCaptureConfig : NSObject
@property (nonatomic) void /* unknown type, empty encoding */ leftOfStartFrameOffset;
@property (nonatomic) void /* unknown type, empty encoding */ rightOfEndFrameOffset;
@property (nonatomic, readonly) NSString *description;
- (id)init;
@end