iOS Voice admission

In iOS, speech recognition requires that the voice be crawled.

#import "GetAudioViewController.h"

#import <AVFoundation/AVFoundation.h>

#import <UIKit/UIKit.h>

#import <ImageIO/ImageIO.h>

#import <MobileCoreServices/MobileCoreServices.h>

#import <QuartzCore/QuartzCore.h>

@interface Getaudioviewcontroller ()

{

Avaudioplayer *_player;

Avaudiorecorder *_audiorecord;

nstimer* _timerforpitch;

Cashapelayer *_shapelayer;

Cadisplaylink* _displaylink;

__weak Iboutlet Uiprogressview *_audiopower;

__weak Iboutlet UIButton *_record;

__weak Iboutlet UIButton *_pause;

__weak Iboutlet UIButton *_resume;

__weak Iboutlet UIButton *_stop;

__weak Iboutlet UIView *_viewforwave;

float Pitch;

Nsinteger _recordencoding;

Cftimeinterval _firsttimestamp;

Nsinteger _loopcount;

}

@end

@implementation Getaudioviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

}

-(void) Cratepath: (nsstring*) path

{

nsfilemanager* FileManager = [Nsfilemanager Defaultmanager];

if (![ FileManager Fileexistsatpath:path])

[FileManager Createdirectoryatpath:path

Withintermediatedirectories:yes

Attributes:nil

Error:nil];

}

-(Uibezierpath *) Pathatinterval: (nstimeinterval) interval

{

Uibezierpath *path = [Uibezierpath Bezierpath];

[Path Movetopoint:cgpointmake (0, _viewforwave.bounds.size.height/2.0)];

CGFloat Fractionofsecond = Interval-floor (interval);

CGFloat yoffset = _viewforwave.bounds.size.height * Sin (fractionofsecond * m_pi * pitch*8);

[Path Addcurvetopoint:cgpointmake (_viewforwave.bounds.size.width, _viewforwave.bounds.size.height/2.0)

Controlpoint1:cgpointmake (_viewforwave.bounds.size.width/2.0, _viewforwave.bounds.size.height/2.0-yoffset)

Controlpoint2:cgpointmake (_viewforwave.bounds.size.width/2.0, _viewforwave.bounds.size.height/2.0 + yOffset)];

return path;

}

-(void) Addshapelayer

{

_shapelayer = [Cashapelayer layer];

_shapelayer.path = [[self pathatinterval:2.0] cgpath];

_shapelayer.fillcolor = [[Uicolor redcolor] cgcolor];

_shapelayer.linewidth = 1.0;

_shapelayer.strokecolor = [[Uicolor whitecolor] cgcolor];

[_viewforwave.layer Addsublayer:_shapelayer];

}

-(void) Handledisplaylink: (Cadisplaylink *) DisplayLink

{

if (!_firsttimestamp)

_firsttimestamp = Displaylink.timestamp;

_loopcount++;

Nstimeinterval elapsed = (Displaylink.timestamp-_firsttimestamp);

_shapelayer.path = [[self pathatinterval:elapsed] cgpath];

}

-(void) Startdisplaylink

{

_displaylink = [Cadisplaylink displaylinkwithtarget:self selector: @selector (handledisplaylink:)];

[_displaylink Addtorunloop:[nsrunloop Currentrunloop] formode:nsdefaultrunloopmode];

}

-(Ibaction) Recordclick: (ID) Sender {

_viewforwave.hidden = NO;

[Self addshapelayer];

[Self startdisplaylink];

NSLog (@ "startrecording");

_audiorecord = nil;

Avaudiosession *audiosession = [Avaudiosession sharedinstance];

[Audiosession Setcategory:avaudiosessioncategoryrecord Error:nil];

Nsmutabledictionary *recordsettings = [[Nsmutabledictionary alloc] initwithcapacity:10];

if (_recordencoding = = 6)

{

[Recordsettings Setobject:[nsnumber NUMBERWITHINT:KAUDIOFORMATLINEARPCM] forkey:avformatidkey];

[Recordsettings Setobject:[nsnumber numberwithfloat:44100.0] forkey:avsampleratekey];

[Recordsettings Setobject:[nsnumber Numberwithint:2] forkey:avnumberofchannelskey];

[Recordsettings Setobject:[nsnumber numberwithint:16] forkey:avlinearpcmbitdepthkey];

[Recordsettings Setobject:[nsnumber Numberwithbool:no] forkey:avlinearpcmisbigendiankey];

[Recordsettings Setobject:[nsnumber Numberwithbool:no] forkey:avlinearpcmisfloatkey];

}

Else

{

NSNumber *formatobject;

Switch (_recordencoding) {

Case 1:

Formatobject = [NSNumber NUMBERWITHINT:KAUDIOFORMATMPEG4AAC];

Break

Case 2:

Formatobject = [NSNumber numberwithint:kaudioformatapplelossless];

Break

Case 3:

Formatobject = [NSNumber numberwithint:kaudioformatappleima4];

Break

Case 4:

Formatobject = [NSNumber NUMBERWITHINT:KAUDIOFORMATILBC];

Break

Case 5:

Formatobject = [NSNumber Numberwithint:kaudioformatulaw];

Break

Default

Formatobject = [NSNumber numberwithint:kaudioformatappleima4];

}

[Recordsettings Setobject:formatobject Forkey:avformatidkey];

[Recordsettings Setobject:[nsnumber numberwithfloat:44100.0] forkey:avsampleratekey];

[Recordsettings Setobject:[nsnumber Numberwithint:2] forkey:avnumberofchannelskey];

[Recordsettings Setobject:[nsnumber numberwithint:12800] forkey:avencoderbitratekey];

[Recordsettings Setobject:[nsnumber numberwithint:16] forkey:avlinearpcmbitdepthkey];

[Recordsettings Setobject:[nsnumber Numberwithint:avaudioqualityhigh] forkey:avencoderaudioqualitykey];

}

Nsarray *dirpaths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES);

NSString *docsdir = [Dirpaths objectatindex:0];

NSString *soundfilepath = [Docsdir

stringbyappendingpathcomponent:@ "RECORDTEST.CAF"];

Nsurl *url = [Nsurl Fileurlwithpath:soundfilepath];

Nserror *error = nil;

_audiorecord = [[Avaudiorecorder alloc] Initwithurl:url settings:recordsettings error:&error];

_audiorecord.meteringenabled = YES;

if ([_audiorecord preparetorecord] = = YES) {

_audiorecord.meteringenabled = YES;

[_audiorecord Record];

_timerforpitch =[nstimer scheduledtimerwithtimeinterval:0.01 target:self selector: @selector (leveltimercallback:) Userinfo:nil Repeats:yes];

}else {

int errorCode = CFSWAPINT32HOSTTOBIG ([error code]);

NSLog (@ "error:%@ [%4.4s])", [Error Localizeddescription], (char*) &errorcode);

}

}

-(void) Leveltimercallback: (Nstimer *) Timer {

[_audiorecord Updatemeters];

float linear = POW (ten, [_audiorecord peakpowerforchannel:0]/20);

float linear1 = POW (ten, [_audiorecord averagepowerforchannel:0]/20);

if (linear1>0.03) {

Pitch = Linear1+.20;//pow (ten, [Audiorecorder averagepowerforchannel:0]/+);//[audiorecorder peakpowerforchannel:0];

}

else {

Pitch = 0.0;

}

Pitch =linear1;

NSLog (@ "pitch==%f", Pitch);

_customrangebar.value = pitch;//linear1+.30;

[_audiopower Setprogress:pitch];

Float minutes = floor (_AUDIORECORD.CURRENTTIME/60);

float seconds = _audiorecord.currenttime-(minutes * 60);

NSString *time = [NSString stringwithformat:@ "%0.0f.%0. 0f ", minutes, seconds];

[Self.statuslabel settext:[nsstring stringwithformat:@ "%@ sec", time]];

NSLog (@ "recording");

}

-(Ibaction) Pauseclick: (ID) Sender {

NSLog (@ "stoprecording");

Kseconds = 0.0;

_viewforwave.hidden = YES;

[_audiorecord stop];

[Self stopdisplaylink];

_shapelayer.path = [[self pathatinterval:0] cgpath];

[_timerforpitch invalidate];

_timerforpitch = nil;

}

-(void) Stopdisplaylink

{

[_displaylink invalidate];

_displaylink = nil;

}

-(Ibaction) Resumeclick: (ID) Sender {

Avaudiosession *audiosession = [Avaudiosession sharedinstance];

[Audiosession Setcategory:avaudiosessioncategoryplayback Error:nil];

Nsarray *dirpaths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES);

NSString *docsdir = [Dirpaths objectatindex:0];

NSString *soundfilepath = [Docsdir stringbyappendingpathcomponent:@ "RECORDTEST.CAF"];

Nsurl *url = [Nsurl Fileurlwithpath:soundfilepath];

Nserror *error;

_player = [[Avaudioplayer alloc] Initwithcontentsofurl:url error:&error];

_player.numberofloops = 0;

[_player play];

}

-(Ibaction) Stopclick: (ID) Sender {

[_player stop];

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

}

@end

The code is all here. which

_viewforwave is a reaction graph of a band. Interested friends can write their own, landscaping, reference to my writing, remember to leave me a message.

iOS Voice admission