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iPhone iPad Media Q&A » sound » audio 

1. SpeakHere sample can't play sound which loads from internet    stackoverflow.com

I'd like to play sound file which loaded from internet, so I tried to start from iPhone SDK SpeakHere sample. I recorded the sound, then saved and uploaded to the internet, ...

2. How can I fix the sound in my iPhone app for iPhone OS 2.2?    stackoverflow.com

The sound for my iPhone app worked fine when I was running iPhone OS 2.0. I updated to OS 2.2 and now the sound only works with headphones. How ...

3. Multiple audio sounds in iPhone app?    stackoverflow.com

I've gotten to play a single sound in the iPhone app I've started, but I now desire to play multiple sounds based on a button. To create a separate set of ...

4. iPhone - some sound files not playing    stackoverflow.com

I have a list of short wav files. Two of these files do not play on either the simulator or the device itself. All are wav files 1 second long. This is ...

5. How Do I do Real Time Sound/Signal Processing On The iPhone?    stackoverflow.com

I may be doing an iPhone-based application doing near-real-time sound-processing (filtering, etc). I was wondering the best way to get started. Would I want to create an audio cue for recording ...

6. Problem with iPhone application that plays Sound    stackoverflow.com

I've developed an iPhone application that plays Sound. However, when I play a sound in the simulator, the console shows the lines below (also shown in this screenshot).

[12:07:07.505 ...

7. Legality of sampled sound clips in an iPhone app    stackoverflow.com

Does anyone know the legality of using sampled sound clips (specifically spoken words) from movies as part of an iPhone app?

8. Playing sound samples on the iPhone    stackoverflow.com

I've reached the point where i want to play some samples in my game/app. My instinct says use openAL ... I will have the situation where I will need to play ...

9. play two sounds simultaneously iphone sdk    stackoverflow.com

I am trying to make a small music app on the iphone. I want to have an octave a piano which will respond to touches and play the key or keys ...

10. iPhone: how to make key click sound for custom keypad?    stackoverflow.com

Is there a way to programmatically invoke the keypad "click" sound? My app has a custom keypad (built out of UIButtons) and I'd like to provide some audio feedback when ...

11. Halting a playing sound sample on iPhone using AudioServices    stackoverflow.com

I am implementing a sound effect that plays while a user is dragging a UISlider. Here is the IBAction: called by the UISlider's Value Changed event

-(IBAction)playTone4; {
    AudioServicesPlaySystemSound(soundID4); 
}
I ...

12. Are there any legal and royalty-free sound libraries to get sounds for iPhone applications?    stackoverflow.com

Problem: Great graphics, nice app. But no sound. I want sound. UPDATE: All cleared now. Soundsnap.com does not exclude iPhone apps. Tasos Frantzolas responded that there are no copyright problems with sounds ...

13. Play a sound of indefinite duration on the iPhone    stackoverflow.com

I need to play a "horn" sound when a user touches the screen. The horn sound needs to play for as long as the user's finger remains in contact with the ...

14. Sound does not working in Device    stackoverflow.com

In my app i write for record

    NSArray *filePaths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *recordingDirectory = [filePaths objectAtIndex: 0];
    NSString ...

15. How do I synthesize sounds with CoreAudio on iPhone/Mac    stackoverflow.com

I'd like to play a synthesised sound in an iPhone. Instead of using a pre-recorded sound and using SystemSoundID to play an existing binary, I'd like to synthesise it. Partially, that's ...

16. PJSIP on Iphone OS 3.0 how to port sound?    stackoverflow.com

I have successfully compiled pjsip and the Siphon project (http://code.google.com/p/siphon/) and it is working good under OS 2.2.1 However It crashes as soon as I try to place a ...

17. Switching Off Sound in an iPhone Application    stackoverflow.com

Can someone please tell me how to switch off sound in an iPhone Application. Thanks :)

18. How do i Pause a bundled sound file in iPhone SDK    stackoverflow.com

I am now learning on the audio framework of iphone. Just tried to play a sound file and it works fine. Now i need to pause that thing when its playing. ...

19. Play sound in iPhone web app with Javascript?    stackoverflow.com

I'm currently creating an iPhone web application for piano chords, and I wanted to add an option that would let the user press a Play button and play the selected chord. ...

20. How can I play multiple sounds at once in the iPhone SDK?    stackoverflow.com

How can I play multiple sounds at once in the iPhone SDK?

21. Sync sound with NStimer iphone sdk?    stackoverflow.com

I am creating an application,in my app i am changing images for countdown.I want to play a Tick sound when one second completes(i mean when image changes).I have a 25 second ...

22. Easiest way to play a CAF sound on the iPhone?    stackoverflow.com

How hard is it to do that? Someone told me that it's incredible hard playing audio on the iPhone. Can't really believe it. But he said playing one is hard, but ...

23. Preload sounds played via iPhone AudioServices    stackoverflow.com

I built an iPhone app using AudioServices to play short sounds. The first time a sound is played, there's a delay of half a second or so while the sound ...

24. Playing built in sounds on the iPhone    stackoverflow.com

I have an app that has a fake SMS screen, when this is displayed I want to play one of the SMS sounds that are on the phone. How do I do ...

25. How do you loop iPhone sounds?    stackoverflow.com

Im working on a new game and i'm done but i just need to add some looping music, i have the sound file i want to loop, called theme.m4a How would ...

26. Sound working in emulator, not in real iPhone    stackoverflow.com

Have few short sound effect samples, which play just fine in emulator, but not at all in real iPhone 3GS. Here's the code, about as-is from Apple SysSound sample:

CFBundleRef mb = ...

27. IPhone Playing sound over a phone call    stackoverflow.com

I would like to be able to play a sound file during a phone call so the person at the other end of the line can ear it clearly. I know ...

28. Can I use the "free" sound files from this website?    stackoverflow.com

For not-free iphone applications, can I use sound files from this websites? Tintagel's Free Sound File Archive Can I download the wav files and use/play them in my app, without getting ...

29. How to differentiate between silence pattern and a beep pattern in sound signals in iPhone OS    stackoverflow.com

I am doing sound latency test. my device will be receiving either a beep signal or a silence signal. How can i differentiate between these signals. Please help me. Thanks in ...

30. How to play sounds in iPhone app    stackoverflow.com

I am a beginner in this very confusing Objective-C game. I would like to play a very short sound effect every time a certain button is pushed. How can I do this? Can I ...

31. touchesEnded Sound?    stackoverflow.com

I'm trying to play a sound on touchesEnded but I'm having a problem. There are multiple objects that get moved around, so if the below code holds true when any ...

32. Is it possible to take 2 sounds and save them as one?    stackoverflow.com

Is it possible to take 2 sounds and save them as one sound file? Thanks.

33. Objective-C - Adding sound on iPhone    stackoverflow.com

I'm making a sound for the iPhone and I'm interested in adding background music and background sounds. Is CoreAudio right for the job? And if so, how do I use it?

34. Mixing sound files on an iPhone    stackoverflow.com

I've got a couple of wav files and possibly a mp3 that I'd like to mix down to a single wav or mp3-file. I'm using C/C++/Obj-C (iPhone). I have really no ...

35. How to generate sound from a waveform Data    stackoverflow.com

Hi All I have to make a project in ipad and my problem is that I have to play a sound generated from a wave form/wave form data. Can some one suggest ...

36. Select sound files + iPhone SDK    stackoverflow.com

Can we select sound files from iPhone with a particular length?

37. iPhone Datepicker plays 'tick' sound    stackoverflow.com

Does any of you know what event I can tap into on the DatePicker when the wheel moves. I want to play a sound (got sound code) as the wheel spin. Just ...

38. iPhone (iOS4): is it possible to play music/sound during an active call?    stackoverflow.com

I want to allow user to switch to my app during a phone call and play some sound that the second person will hear. I see here that it was possible ...

39. Outputting sound using multiple audio routes at the same time in an iPhone App?    stackoverflow.com

I'm playing around with audio routes in AVAudioSession at the moment and I'm wondering whether it is possible to output sound to multiple audio routes at the same time i.e. a ...

40. Sound Not Playing In iOS - Not A Source Code Problem    stackoverflow.com

I want to play a sound in my application. Nothing special, just a little WAV file. The file exists in the device in my main bundle, and I've got both the ...

41. Sound Files manipulation on Iphone    stackoverflow.com

I need to find out how I can manipulate sound files on the Iphone. I am mainly seeking ways to add echo sound effect by manipulating the Delay Time, Amplitude and ...

42. Playing continuos sound in iPhone app    stackoverflow.com

I have an iPhone application which requires me to play a looping mp3 sound during the entire lifetime of app. But based on some actions performed by user this mp3 should stop/pause ...

43. move sound from left to right    stackoverflow.com

How to move sound from left to right of earphones in iPhone?
Thanks.

44. How to play a sound in objective C iphone coding    stackoverflow.com

I have an app I am working on and It uses some of the hardware sensors to provide data on screen, there is a Label that updates with the number. ...

45. How to silence iPhone camera shutter sound?    stackoverflow.com

I can snap a picture with the iPhone programmatically by calling [UIImagePickerController takePicture:], but when I do the iPhone plays a loud recording of a shutter click. When I google for ...

46. iPhone app sound recognition?    stackoverflow.com

I'm trying to get an app to record microphone input, and respond to certain sounds. These sounds would be pre-recorded and played on a different device-- like website or TV. So I'm guessing ...

47. iPhone App - WAV sound files don't play    stackoverflow.com

I searched on here and tried out all the different solutions given, but nothing worked. So let me ask: I'm trying to play a sound on an iPhone app when a button ...

48. Watermarking sound, reading through iPhone    stackoverflow.com

I'm researching this so assume newbie. I want to add a few bytes of data to a sound file (for example a song). The sound file will be transmitted via radio to ...

49. How to prevent popping sound when generating iPhone audio with remoteIO?    stackoverflow.com

So, a little while back I was working on a wave generator app and having some problems, but Kenny Winker was a real lifesaver and helped me to basically get everything ...

50. iPhone system sounds in my bundle    stackoverflow.com

I would like to use the system sounds (Marimba, Ascending, Bark etc) as local notification sounds in my app. As I can't access these directly, can anyone tell me where ...

51. Detecting sound in iphone    stackoverflow.com

Can anyone tell me how to detect a sound on iphone.... Please help....please provide any source code or link if possible

52. iphone & ipad app using default sounds    stackoverflow.com

I have an app with a few sounds already in... but I Was wondering if there was a way to allow the user to select from a list of the default ...

53. how to set switch for ON and OFF iphone sound in setting page    stackoverflow.com

I have setting page in this page Uiswitch as sound toggle button for ON and OFF. Implemeted UIswitch with on and off control and working fine with out audio. Now i ...

54. AudioServicesPlaySystemSound and multitasking: severe performance hit when switching apps while sound is playing    stackoverflow.com

I'm using AudioServices to play audio in my iPhone app, with everything humming along nicely. But. I'm having trouble in one particular case: when a user switches apps or closes the ...

55. Mixing sound files of different size    stackoverflow.com

I want to mix audio files of different size into a one single .wav file without clipping any file.,i.e. The resulting file size should be equal to the largest sized file ...

56. Problem while playing short sounds    stackoverflow.com

I am playing small sound files in my game using http://developer.apple.com/library/ios/#samplecode/BubbleLevel/Listings/Classes_SoundEffect_m.html. Sound can be heard even if I set volume to 0 (through side buttons). How can I solve ...

57. Need a Sound Engine or Audio Engine for iOS    stackoverflow.com

I want to play multiple tracks simuntanusly and mix them. Apply effects like flange, reverb, chorus any one know a sound engine working on iphone?

58. Playing sound when app loads    stackoverflow.com

trying to play a sound when app loads

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    //sleep(2);
    [NSThread sleepForTimeInterval:2.0];

    CFBundleRef ...

59. Problem with meter sound    stackoverflow.com

i am using meter, when the sound is play on each level(change level rapidly), the application is crashed... end the eroor is too many files open, What will i do?

60. Increasing Audio file sound    stackoverflow.com

I am implementing a audio based application. In that I need to play my audio file and Ipod applications audio files randomly using AVAudioController and MPMusicPlayerController I did it. But my ...

61. How to play combined sound as if emanating from a crowd of sound-producing objects    stackoverflow.com

Consider that I have 100 instances of a "squeaker" class. Each "squeaker" object is capable of individually emitting a squeak sound. Each squeaker entity uses the same .mp3 resource. When all ...

62. How to convert a compressed sound file to uncompressed file    stackoverflow.com

I want to uncompress a compressed sound file in my iPhone/ipad app. In my app , I have .m4a files which I wanted to convert to .wav form. How is this possible through ...

63. Iphone SDK: Play a "system sound"    stackoverflow.com

I want my IOSDevice to play a sound. Not just some sound that has a format, but a sound litteraly produced by the system. Pretty much like a buzzer or like ...

64. how can I create a function of sound volue from time using AudioQueueBufferRef?    stackoverflow.com

I have a question how can I analyze class AudioQueueBufferRef, for creating a function of sound volue from time?? Here is what I get . there is AudioQueueBufferRef fillBuf = audioQueueBuffer[fillBufferIndex]; ...

65. iPhone SDK: play a sound with coreAudio    stackoverflow.com

So far i've been using AudioServices to play sounds in my drum app which caused horrible lag etc. I've been told that if i use coreAudio there will be no lag abd ...

66. how can I fix the sound problem through my iPhone Application    stackoverflow.com

I am using Singleton in my iphone project. when I click on the sound button (I am using Singleton) for sound. when I click on the play (it will take 2 ...

67. sound beep on mobiles like iphone: with javascript    stackoverflow.com

Is this possible to make sound beep at mobiles like iPhone.....or play native sound....I testing phoneGap.js but it don't works to me......I want to make alert sound when new message arrives ...

68. Latency between different sounds in iPhone application    stackoverflow.com

I’m trying to make a small iPhone application with some buttons to play WAV sounds. My buttons works, but I have a small latency (~ 0,5 sec). This is my .m file :

#import ...

69. Stopping sound from another class    stackoverflow.com

I have played a sound in classA, and does anyone know how to stop it in classB? I have read several posts already, most of them just mention about creating an ...

70. How can I fade-out the sound played by MPMusicPlayerController?    stackoverflow.com

I'd like to fade-out the sound played by MPMusicPlayerController over a particular time period? How can I do this?

71. kAudioSessionCategory_MediaPlayback is silenced with ringer off?    stackoverflow.com

according to the documentation the correct way to allow sounds to be played even if the ringer switch is set to off is like so:

 UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;

   ...

72. sound sequence on iphone - best practice?    stackoverflow.com

I'd like to make a sound sequencer on iphone, almost like "dropophone" http://itunes.apple.com/us/app/dropophone/id376771022?mt=8 So I would need to

  • play multiple samples (1~6seconds) at the same time
  • keeping them synchronized with an NSTimer.
  • being able ...

73. Playing notes or simple sounds on iOS?    stackoverflow.com

I would like to play simple sounds that can be varied at runtime, for example being able to play sounds at different frequencies. Basically, I would like to be able to ...

74. How to detect ambient sound level on the iPhone?    stackoverflow.com

I need to create an audio loudness (decibel) detector. To clarify, I am not trying to find the volume at which the iPhone is playing, but instead the volume of its ...

75. How to emit a custom sound on iPhone    stackoverflow.com

I'm working on a game where a proximity detection for nearby objects will take a great role. I'd like to have it emit a sound when getting close to the obstacle ...

76. how to browse audio/sound from iphone    stackoverflow.com

i am creating an audio application where there are two buttons named 1>record an audio 2>Browse an audio when the user click on the first button he can record audio.This has been implemented. when ...

77. How to stop all sounds in an iOS application, including sounds of other apps    stackoverflow.com

I'm trying to make a function which stops all sounds in an iOS device, including the sounds of other apps that may run in the background. I think this can be ...

78. iPhone - How to receive sound/audio when user speaks?    stackoverflow.com

I created an app that plays the song and calculates the decibels of the audio that is being played. Its fine. But I want to make a change in it. That is ...

79. What is the best way for packing 6000+ sound files in a iOS Application    stackoverflow.com

I'm working on a iOS application that will contain around ~6000 mp3 of sounds files. Each one is around 1 second (2 max) long and rather low quality (24K bitrate) weighting in ...

80. Rhythm (sound change) detection on iPhone    stackoverflow.com

Sorry for my weak english I've got some aif or MP3 tunes for plaing loud on the iPhone, and I need to do some 'sound change' detections, such I would use for ...

81. Use of predefined sounds in AudioServicesPlayAlertSound?    stackoverflow.com

Is it possible to use predefined sound ids in AudioServicesPlayAlertSound (http://www.iphonedevwiki.net/index.php/AudioServices) or can this cause my app to be rejected?

82. Touch Drag Inside triggers sound repeatedly & Touch Up Inside doesn't work    stackoverflow.com

I'm trying to do an app where a short sound sample is supposed to be played while the person using the app is dragging his/her finger(s) across the screen. When the ...

83. iPhone : Looping Audio stops after 4 mins    stackoverflow.com

I am making a count down timer which plays a "beep" sound for every second counting through an NSTimer. The app must be awake for a max period of 90min and ...

84. Which is better? using a soundbank or separate sound files for iphone    stackoverflow.com

We are working on a project which we have to use more then 20.000 separate sound files. We are searching for the best solution. Using all the files separately or if ...

85. Books for low level sound programming with objective-c for the iPhone    stackoverflow.com

I'd like to learn the basics of low level (audio synthesis) sound programming, how to code some effects, etc... to build iPhone applications. Do you have some recommendations ?

86. System Sound Services Won't play audio when connected to a car's bluetooth    stackoverflow.com

I am using System Sound Services to play audio in my application It works perfectly when using speakers, headphones or even a dock USB car stereo connection. However when the phone is connected ...

87. iPhone sound not stopping when a second sound is played    stackoverflow.com

Possible Duplicate:
Sound stop playing
iPhone - Sound overlapping with multiple button presses
My code has sound buttons and when one is pressed it ...

88. Sound map in iPhone    stackoverflow.com

Well, I'm not sure how this thing should be called.. But I need to read sound file and generate this (in iOS): enter image description here It's kinda sound map, or ...

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