EMVoiceParam.h

#import <Foundation/Foundation.h>
#import <CoreAudioTypes/CoreAudioTypes.h>

typedef NS_ENUM(UInt32, EMVoiceFormat) {
    EMVoiceFormatPCM = kAudioFormatLinearPCM,  
    EMVoiceFormatAMR = kAudioFormatAMR,        
    EMVoiceFormatMP3 = kAudioFormatMPEGLayer3, 
};

@interface EMVoiceParam : NSObject

@property (nonatomic, assign) EMVoiceFormat format;

@property (nonatomic, assign) NSInteger sampleRate;

@property (nonatomic, assign) NSInteger bitsPerSample;

@property (nonatomic, assign) NSInteger channels;

@end