ios - How to record Piano? -

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i have piano app touch based tones , want put recording feature in it. can guide me this. need record , send stream.

-(void) viewdidload {     [super viewdidload];     [keyboardview setvisiblekeyrange: nsmakerange(48, 5)];      if (audio == nil) {         [self setaudio:[nsmutablearray arraywithcapacity:0]];     }      [drawingview setshowoutsideledger:yes];      nsstring* plistpath = [[nsbundle mainbundle] pathforresource:@"keyboardlayout" oftype:@"plist"];     nsarray* names = [nsarray arraywithcontentsoffile:plistpath];      // load audio     (int = 0; < [names count]; i++) {         systemsoundid soundid;         audioservicescreatesystemsoundid((__bridge cfurlref)[nsurl fileurlwithpath:[[nsbundle mainbundle] pathforresource:names[i] oftype:@"aif"]], &soundid);           nsnumber* audioid = @(soundid);         [audio addobject:audioid];     }      [[self keyboardview] setdelegate:self];     [[self octaveselectionview] setdelegate:self];       }  - (void) keyspressed:(nsset *)keys {     nslog(@"keyspressed=%d", [keys count]);      [drawingview addnotes:keys];      (nsnumber* keyindex in keys) {         if ([audio count] > [keyindex intvalue]) {             systemsoundid soundid = [audio[[keyindex intvalue]] unsignedlongvalue];             audioservicesplaysystemsound(soundid);         }     } }

just give idea how save key hit note , record timer delay on local db. after using avasset combine hit audio , mute audio save or replay back. may help


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