录制wav格式的音频

项目中有面部认证、声纹认证，服务器端要求上传wav格式的音频，所以写了这样一个小demo。

刚刚开始写博客还不知道怎么上传代码，就复制了，嘻嘻

DotimeManage.h

@class DotimeManage;

@protocol DotimeManageDelegate <NSObject>

- (void)TimerActionValueChange:(int)time; //时间改变

@end

#import <Foundation/Foundation.h>

@interface DotimeManage : NSObject

{

NSTimer *BBtimer;

}

@property (nonatomic)int timeValue;

@property (nonatomic,assign)id<DotimeManageDelegate> delegate;

+ (DotimeManage *)DefaultManage;

//开始计时

- (void)startTime;

//停止计时

- (void)stopTimer;

@end

DotimeManage.m

#import "DotimeManage.h"

@implementation DotimeManage

static DotimeManage *timeManage = nil;

+ (DotimeManage *)DefaultManage{

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

timeManage = [[DotimeManage alloc] init];

});

return timeManage;

}

- (id)init {

self = [super init];

if (self) {

}

return self;

}

//开始计时

- (void)startTime {

//停止上次计时器

[self stopTimer];

if (BBtimer == nil) {

self.timeValue = 0;

BBtimer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(TimerAction) userInfo:nil repeats:YES];

NSRunLoop *main=[NSRunLoop currentRunLoop];

[main addTimer:BBtimer forMode:NSRunLoopCommonModes];

}

//停止计时

- (void)stopTimer {

if (BBtimer != nil) {

[BBtimer invalidate];

BBtimer = nil;

}

//倒计时

- (void)TimerAction {

self.timeValue ++;

if ([self.delegate respondsToSelector:@selector(TimerActionValueChange:)]) {

[self.delegate TimerActionValueChange:self.timeValue];

}

@end

Recorder.h

#import <Foundation/Foundation.h>

#import <AVFoundation/AVFoundation.h>

#import <AudioToolbox/AudioToolbox.h>

#import <UIKit/UIKit.h>

#define DefaultSubPath @"Voice" //默认二级目录可以修改自己想要的例如 "文件夹1/文件夹2/文件夹3"

#define SampleRateKey 44100.0 //采样率8000.0

#define LinearPCMBitDepth 16 //采样位数默认 16

#define NumberOfChannels 1 //通道的数目

@protocol RecorderDelegate <NSObject>

/**

* 录音进行中

* currentTime 录音时长

**/

-(void)recorderCurrentTime:(NSTimeInterval)currentTime;

/**

* 录音完成

* filePath 录音文件保存路径

* fileName 录音文件名

* duration 录音时长

**/

-(void)recorderStop:(NSString *)filePath voiceName:(NSString *)fileName duration:(NSTimeInterval)duration;

/**

* 开始录音

**/

-(void)recorderStart;

@end

@interface Recorder : NSObject<AVAudioRecorderDelegate>

@property (assign, nonatomic) id<RecorderDelegate> recorderDelegate;

@property(strong, nonatomic) NSString *filename,*filePath;

/**

* 录音控件单例对象

**/

+(Recorder *)shareRecorder;

/**

* 开始录音

* //默认的录音存储的文件夹在 "Document/Voice/文件名(文件名示例: 2015-01-06_12:41).wav"

* 录音的文件名 "2015-01-06_12:41"

**/

-(void)startRecord;

/**

* 停止录音

**/

-(void)stopRecord;

/**

* 获得峰值

**/

-(float)getPeakPower;

/**

* 是否可以录音

**/

- (BOOL)canRecord;

@end

Recorder.m

#import "Recorder.h"

#ifdef DEBUG

#define VSLog(log, ...) NSLog(log, ## __VA_ARGS__)

#else

#define VSLog(log, ...)

#endif

#define IOS7 ( [[[UIDevice currentDevice] systemVersion] compare:@"7.0"] != NSOrderedAscending )

@interface Recorder ()

{

NSMutableArray *cacheDelegates;

NSMutableArray *cacheURLs;

NSTimer *countDownTimer_;//定时器，每秒调用一次

}

@property(strong, nonatomic) AVAudioRecorder *audioRecorder;

@property(strong, nonatomic) NSMutableDictionary *cacheDic;

@end

@implementation Recorder

+(Recorder *)shareRecorder

{

static Recorder *sharedRecorderInstance = nil;

static dispatch_once_t predicate;

dispatch_once(&predicate, ^{

sharedRecorderInstance = [[self alloc] init];

});

return sharedRecorderInstance;

}

-(BOOL)canRecord

{

__block BOOL bCanRecord = YES;

if (IOS7)

{

AVAudioSession *audioSession = [AVAudioSession sharedInstance];

if ([audioSession respondsToSelector:@selector(requestRecordPermission:)]) {

[audioSession performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {

if (granted) {

bCanRecord = YES;

} else {

bCanRecord = NO;

}

}];

}

return bCanRecord;

}

-(id)init

{

self = [super init];

if (self) {

self.cacheDic = [NSMutableDictionary dictionaryWithCapacity:1];

cacheDelegates = [[NSMutableArray alloc] init];

cacheURLs = [[NSMutableArray alloc] init];

[self resetTimerCount];

}

return self;

}

-(void)stopTimerCountRun

{

if (countDownTimer_) {

[countDownTimer_ invalidate];

countDownTimer_ = nil;

}

-(void)resetTimerCount

{

[self stopTimerCountRun];

countDownTimer_ = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeCountDown) userInfo:nil repeats:YES];

[[NSRunLoop currentRunLoop] addTimer:countDownTimer_ forMode:NSRunLoopCommonModes];

}

- (void)timeCountDown

{

if (self.audioRecorder.isRecording) {

//当前时间

if ([self.recorderDelegate respondsToSelector:@selector(recorderCurrentTime:)]) {

[self.recorderDelegate recorderCurrentTime:self.audioRecorder.currentTime];

}

#pragma mark - 广播停止录音

//停止录音

-(void)stopAVAudioRecord

{

}

-(void)startRecordWithFilePath:(NSString *)filePath

{

AVAudioSession *session = [AVAudioSession sharedInstance];

[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];

[session setActive:YES error:nil];

NSDictionary *recordSetting = [NSDictionary dictionaryWithObjectsAndKeys:

[NSNumber numberWithFloat: SampleRateKey],AVSampleRateKey, //采样率

[NSNumber numberWithInt: kAudioFormatLinearPCM],AVFormatIDKey,

[NSNumber numberWithInt:LinearPCMBitDepth],AVLinearPCMBitDepthKey,//采样位数默认 16

[NSNumber numberWithInt: NumberOfChannels], AVNumberOfChannelsKey,//通道的数目,

nil];

NSURL *url = [NSURL fileURLWithPath:filePath];

self.filePath = filePath;

NSError *error = nil;

if (self.audioRecorder) {

if (self.audioRecorder.isRecording) {

[self.audioRecorder stop];

}

self.audioRecorder = nil;

}

AVAudioRecorder *tmpRecord = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&error];

self.audioRecorder = tmpRecord;

self.audioRecorder.meteringEnabled = YES;

self.audioRecorder.delegate = self;

if ([self.audioRecorder prepareToRecord] == YES){

self.audioRecorder.meteringEnabled = YES;

[self.audioRecorder record];

if ([self.recorderDelegate respondsToSelector:@selector(recorderStart)]) {

[self.recorderDelegate recorderStart];

}

[[UIApplication sharedApplication] setIdleTimerDisabled: YES];//保持屏幕长亮

[[UIDevice currentDevice] setProximityMonitoringEnabled:NO]; //建议在播放之前设置yes，播放结束设置NO，这个功能是开启红外感应

}else {

int errorCode = CFSwapInt32HostToBig ([error code]);

VSLog(@"Error: %@ [%4.4s])" , [error localizedDescription], (char*)&errorCode);

}

-(void)startRecord

{

NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(

NSDocumentDirectory, NSUserDomainMask, YES);

NSString *docsDir = [dirPaths objectAtIndex:0];

//录音文件名采用时间标记例如"2015-01-06_12:41"

// self.filename = [self createFilename];

self.filename = @"RecordingFile";

NSString *soundFilePath = [docsDir

stringByAppendingPathComponent:[NSString stringWithFormat:@"%@/%@.wav",DefaultSubPath,self.filename]];

[self createFilePath];

[self startRecordWithFilePath:soundFilePath];

}

//创建录音文件名字

- (NSString *)createFilename {

NSDate *date_ = [NSDate date];

NSDateFormatter *dateformater = [[NSDateFormatter alloc] init];

[dateformater setDateFormat:@"yyyy-MM-dd_HH-mm-ss"];

NSString *timeFileName = [dateformater stringFromDate:date_];

return timeFileName;

}

//创建存储路径

-(void)createFilePath

{

NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(

NSDocumentDirectory, NSUserDomainMask, YES);

NSString *docsDir = [dirPaths objectAtIndex:0];

NSString *savedImagePath = [docsDir

stringByAppendingPathComponent:DefaultSubPath];

BOOL isDir = NO;

NSFileManager *fileManager = [NSFileManager defaultManager];

BOOL existed = [fileManager fileExistsAtPath:savedImagePath isDirectory:&isDir];

if ( !(isDir == YES && existed == YES) )

{

[fileManager createDirectoryAtPath:savedImagePath withIntermediateDirectories:YES attributes:nil error:nil];

}

-(void)stopRecord

{

if (self.audioRecorder) {

if ([self.recorderDelegate respondsToSelector:@selector(recorderStop:voiceName:duration:)]) {

[self.recorderDelegate recorderStop:self.filePath voiceName:self.filename duration:self.audioRecorder.currentTime];

}

self.recorderDelegate = nil;

[self.audioRecorder stop];

AVAudioSession *session = [AVAudioSession sharedInstance];

[session setActive:NO error:nil];

[session setCategory:AVAudioSessionCategoryAmbient error:nil];

}

-(float)getPeakPower

{

[self.audioRecorder updateMeters];

float linear = pow (10, [self.audioRecorder peakPowerForChannel:0] / 20);

float linear1 = pow (10, [self.audioRecorder averagePowerForChannel:0] / 20);

float Pitch = 0;

if (linear1>0.03) {

Pitch = linear1+.20;//pow (10, [audioRecorder averagePowerForChannel:0] / 20);//[audioRecorder peakPowerForChannel:0];

}

else {

Pitch = 0.0;

}

float peakPowerForChannel = (linear + 160)/160;

return peakPowerForChannel;

}

//-(void)dealloc

//{

// self.audioRecorder = nil;

// [[NSNotificationCenter defaultCenter] removeObserver:self];

// [super dealloc];

//}

#pragma mark -

#pragma mark AVAudioRecorderDelegate Methods

-(void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag

{

[[UIApplication sharedApplication] setIdleTimerDisabled: NO];

if (flag) {

if ([self.recorderDelegate respondsToSelector:@selector(recorderStop:voiceName:duration:)]) {

[self.recorderDelegate recorderStop:self.filePath voiceName:self.filename duration:self.audioRecorder.currentTime];

}

self.recorderDelegate = nil;

}else{

if ([self.recorderDelegate respondsToSelector:@selector(recorderStop:voiceName:duration:)]) {

[self.recorderDelegate recorderStop:self.filePath voiceName:self.filename duration:self.audioRecorder.currentTime];

}

self.recorderDelegate = nil;

}

AVAudioSession *session = [AVAudioSession sharedInstance];

[session setActive:NO error:nil];

[session setCategory:AVAudioSessionCategoryAmbient error:nil];

}

-(void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError *)error

{

[[UIApplication sharedApplication] setIdleTimerDisabled: NO];

if ([self.recorderDelegate respondsToSelector:@selector(recorderStop:voiceName:duration:)]) {

[self.recorderDelegate recorderStop:self.filePath voiceName:self.filename duration:self.audioRecorder.currentTime];

}

self.recorderDelegate = nil;

AVAudioSession *session = [AVAudioSession sharedInstance];

[session setActive:NO error:nil];

[session setCategory:AVAudioSessionCategoryAmbient error:nil];

}

@end

在需要录制音频的界面调用这两个文件

录制音频的按钮有两个响应事件，代码如下

[recordingBtn addTarget:self action:@selector(buttonSayBegin) forControlEvents:UIControlEventTouchDown];

[recordingBtn addTarget:self action:@selector(buttonSayEnd) forControlEvents:UIControlEventTouchUpInside];

- (void)buttonSayBegin

{

[self stopAudio];

[[Recorder shareRecorder]startRecord];

}

- (void)buttonSayEnd

{

[[Recorder shareRecorder]stopRecord];

[self stopAudio];

// [StateLable setText:@"播放录音文件中。。"];

NSString * string = [Recorder shareRecorder].filePath;

[self playAudio:string];

}

//播放

- (void)playAudio:(NSString *)path {

NSURL *url = [NSURL URLWithString:path];

NSError *err = nil;

audioPalyer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&err];

audioPalyer.delegate = self;

[audioPalyer prepareToPlay];

[audioPalyer play];

}

//停止播放

- (void)stopAudio {

if (audioPalyer) {

[audioPalyer stop];

audioPalyer = nil;

}

- (void)playing

{

if([audioPalyer isPlaying])

{

[audioPalyer pause];

}

else

{

[audioPalyer play];

}

#pragma mark -AVAudio 代理方法-

- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag

{

}

OK 问题解决

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