AEExpanderFilter.h

Go to the documentation of this file.

//
//  AEExpanderFilter.h
//  The Amazing Audio Engine
//
//  Created by Michael Tyson on 09/07/2011.
//
//  This software is provided 'as-is', without any express or implied
//  warranty.  In no event will the authors be held liable for any damages
//  arising from the use of this software.
//
//  Permission is granted to anyone to use this software for any purpose,
//  including commercial applications, and to alter it and redistribute it
//  freely, subject to the following restrictions:
//
//  1. The origin of this software must not be misrepresented; you must not
//     claim that you wrote the original software. If you use this software
//     in a product, an acknowledgment in the product documentation would be
//     appreciated but is not required.
//
//  2. Altered source versions must be plainly marked as such, and must not be
//     misrepresented as being the original software.
//
//  3. This notice may not be removed or altered from any source distribution.
//

#ifdef __cplusplus
extern "C" {
#endif

#import <Foundation/Foundation.h>
#import "TheAmazingAudioEngine.h"

#define AEExpanderFilterRatioGateMode 0

typedef enum {
    AEExpanderFilterPresetNone=-1,
    AEExpanderFilterPresetSmooth=0,
    AEExpanderFilterPresetMedium=1,
    AEExpanderFilterPresetPercussive=2
} AEExpanderFilterPreset;

@interface AEExpanderFilter : NSObject <AEAudioFilter>

- (id)init;

- (void)assignPreset:(AEExpanderFilterPreset)preset;

- (void)startCalibratingWithCompletionBlock:(void (^)(void))block;

@property (nonatomic, assign) float ratio;
@property (nonatomic, assign) double threshold;
@property (nonatomic, assign) double hysteresis;
@property (nonatomic, assign) NSTimeInterval attack;
@property (nonatomic, assign) NSTimeInterval decay;

@end

#ifdef __cplusplus
}
#endif