I have a bunch of sound clips, named sound1.mp3 through soundN.mp3. I want to randomly play them on touch, so I've set up an AVAudioPlayer for each clip which are all stored in players (AVAudioPlayer**). After I initialize everything, the only sound I can get to play is sound1.mp3. What am I doing wrong?
Thanks for the help, init code is below.
players = (AVAudioPlayer**) malloc ( sizeof (AVAudioPlayer*) * NUM_CLIPS);
NSString* path;
NSString* name;
for(uint i = 0; i < NUM_CLIPS; i++){
name = [NSString stringWithFormat: #"sound%d", i+1];
path = [[NSBundle mainBundle] pathForResource:name ofType:#"mp3"];
players[i] = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
[players[i] setMeteringEnabled:YES];
[players[i] prepareToPlay];
}
The reason for this is that mp3/aac files are hardware decoded and only on at a time can be decoded.
Nevermind, seems like it was a problem with the way prepareToPlay works
James Brooks (jamesbrooks dot net) says that changing the *.mp3 files into *.caf allowed him to play multiple sounds with the AVAudioPlayer. I personally, however, can not get the *.caf files to play at the same time but I can get *.aiff files to play simultaneously.
Related
First time i am capturing video in my App, but when i start capturing i want that button click sound as native application. I have searched a lot and came to know that it is a system sound. Can anyone please tell me how can i add that sound in my application when i start capturing video and when i stop capturing.
Currently i am using AVAudioPlayer to play sound as shown below
NSURL *url1 = [[NSBundle mainBundle] URLForResource:str withExtension:#"wav"];
_startAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url1 error:nil];
_startAudioPlayer.delegate= self;
[_startAudioPlayer prepareToPlay];
[_startAudioPlayer play];
Thanks in advance.....
Just import AudioToolbox.framework.
Create the URL for the source audio file
NSURL *tapSound = [[NSBundle mainBundle] URLForResource: #"tap"
withExtension: #"aif"];
// Store the URL as a CFURLRef instance
self.soundFileURLRef = (CFURLRef) [tapSound retain];
// Create a system sound object representing the sound file.
AudioServicesCreateSystemSoundID (
soundFileURLRef,
&soundFileObject
);
Play sound
AudioServicesPlayAlertSound (soundFileObject);
Here is a nice tutorial link you can follow this
When you want to start capturing video at that time call this bellow method like this...
[self playSound];
use my this bellow method for play sound...
-(void)playSound
{
NSString *path = [[NSBundle mainBundle] pathForResource:#"adriantnt_release_click" ofType:#"mp3"];
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
theAudio.delegate=self;
[theAudio play];
}
first store any mp3 or any audio file in your project folder For Ex: i add adriantnt_release_click.mp3 file.
Also add AVAudioPlayerDelegate in your .h file and add AudioToolbox.framework in your project..
I want to play some simple sound effects when people press certain buttons in my app and I've tried several things, but I always get a latency that makes the sound seem out of sync.
I've followed the tutorials here, so I've tried the build in Audio Services, but that had a latency and I've tried the AVAudioPlayer, but that had a latency as well, even though I used "prepareToPlay".
Do I really have to install a big and messy library like Finch to get a simple sound effect with no latency in my simple app?
Hope you can clarify things for me!
UPDATE
Code for Audio Services:
NSURL *soundURL = [[NSBundle mainBundle] URLForResource:#"PlopsX4"
withExtension:#"aif"];
AudioServicesCreateSystemSoundID((CFURLRef)soundURL, &sound1);
AudioServicesPlaySystemSound(sound1);
Code for AVAudioPlayer in viewDidLoad:
NSURL *soundURL = [[NSBundle mainBundle] URLForResource:#"PlopsX4"
withExtension:#"aif"];
self.avSound = [[AVAudioPlayer alloc]
initWithContentsOfURL:soundURL error:nil];
[self.avSound prepareToPlay]
Code for AVAudioPlayer in method where I want to play the file:
[self.avSound play];
The way I got this to work (and I think I got the idea from another post on SO) was to create an empty 1 second .wav file and "play" it at initialization. After that, there was no delay when I called the other sound effects.
Something like this in my sound player object
SystemSoundID blID;
SystemSoundID cID;
+(void)doInit
{
if (spinitialized){
AudioServicesPlaySystemSound (blID);
return;
}
NSString *str = [[NSBundle mainBundle] pathForResource:#"ding.wav" ofType:#""];
NSURL *uref = [NSURL fileURLWithPath:str];
OSStatus error = AudioServicesCreateSystemSoundID ((CFURLRef)uref, &cID);
if (error) NSLog(#"SoundPlayer doInit Error is %ld",error);
str = [[NSBundle mainBundle] pathForResource:#"blank.wav" ofType:#""];
uref = [NSURL fileURLWithPath:str];
error = AudioServicesCreateSystemSoundID ((CFURLRef)uref, &blID);
if (error) NSLog(#"SoundPlayer doInit Error is %ld",error);
AudioServicesPlaySystemSound (blID);
spinitialized = YES;
}
Then I could just play the "ding" without any delay using:
AudioServicesPlaySystemSound (cid);
SOLUTION
I ended up doing something similar as Mike above. I ended up playing the sound with the sound volume down in viewDidLoad:
NSURL *soundURL = [[NSBundle mainBundle] URLForResource:#"PlopsX4"
withExtension:#"aif"];
self.plops = [[AVAudioPlayer alloc] initWithContentsOfURL:soundURL error:nil];
[self.plops setVolume:0.0];
[self.plops play];
And then in the function where I play it I do:
[self.plops setVolume:1.0];
[self.plops play];
One thing I found that seems to help is, upon entry to the screen where the sound MIGHT be played, to play a fraction of a second of a sound. This seems to "prime" the sound mechanism -- allocating internal objects, paging in stuff, etc.
(I observe that this is similar to Mike M's approach.)
(Objective C)
Just using simple AudioServicesPlaySystemSoundID and its counterparts, but I can't find in the documentation if there is already a way to find the length of an audio file.
I know there is AudioServicesGetPropertyInfo, but that seems to return a byte-buffer - do audio files embed their length in themselves and I can just extract it with this?
Or is there perhaps a formula based on bit-rate * fileSize to convert to length-of-time?
mIL3S
www.milkdrinkingcow.com
According to a quick Google search, there is a formula:
length-of-time (duration in seconds) = fileSize (in bytes) / bit-rate (bits/secs)*8
Is there any particular reason you're using System Sound Services to play a sound?
If you use AVAudioPlayer to handle your sounds you could do something like:
AVAudioPlayer * sound = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:nil];
sound.delegate = self;
sound.volume = 1;
NSLog([NSString stringWithFormat:#"%f", sound.duration]);
sample code from answer How to get the duration of an audio file in iOS?. This is the best answer.
AVURLAsset* audioAsset = [AVURLAsset URLAssetWithURL:audioFileURL options:nil];
CMTime audioDuration = audioAsset.duration;
float audioDurationSeconds = CMTimeGetSeconds(audioDuration);
See at:
Float64 fileDuration = PrepareFileAU (fileAU, fileFormat, audioFile);
see ADC sample at:
http://developer.apple.com/library/mac/#samplecode/PlayFile/Introduction/Intro.html
without using AVPlayer...
-(IBAction)playSound{ AVAudioPlayer *myExampleSound;
NSString *myExamplePath = [[NSBundle mainBundle] pathForResource:#"myaudiofile" ofType:#"caf"];
myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:myExamplePath] error:NULL];
myExampleSound.delegate = self;
[myExampleSound play];
}
I want to play a beep sound when a button is clicked. I had used the above code. But it is taking some delay in playing the sound.
Anyone please help.
There are two sources of the delay. The first one is bigger and can be eliminated using the prepareToPlay method of AVAudioPlayer. This means you have to declare myExampleSound as a class variable and initialize it some time before you are going to need it (and of course call the prepareToPlay after initialization):
- (void) viewDidLoadOrSomethingLikeThat
{
NSString *myExamplePath = [[NSBundle mainBundle]
pathForResource:#"myaudiofile" ofType:#"caf"];
myExampleSound =[[AVAudioPlayer alloc] initWithContentsOfURL:
[NSURL fileURLWithPath:myExamplePath] error:NULL];
myExampleSound.delegate = self;
[myExampleSound prepareToPlay];
}
- (IBAction) playSound {
[myExampleSound play];
}
This should take the lag down to about 20 milliseconds, which is probably fine for your needs. If not, you’ll have to abandon AVAudioPlayer and switch to some other way of playing the sounds (like the Finch sound engine).
See also my own question about lags in AVAudioPlayer.
AudioServicesPlaySystemSound is an option. Tutorial here, sample code here.
I want to play an audio file which is posted on a website. I'm trying to use AVAudioPlayer and set the url to its website link. But the bgPlayer turns out to be nil. I think I can download this audio file and play it afterwards, but is there any way to play it while I'm downloading it?
NSURL *bgURL = [NSURL URLWithString:#"http://www.radioslots.com/iphone/test/tmp/1.mp3"];
bgPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:bgURL error:nil];
bgPlayer.numberOfLoops = -1;
if (bgPlayer) {
[bgPlayer play];
}
AVAudioPlayer isn't made to open network streams, I could be mistaken but I'm pretty sure it's not possible.
Just off the top of my head, I can think of two ways that would probably work:
1. Use MPMoviePlayer, as this can open network streams and despite the name works with audio. The only thing is this pops up the modal player with controls.
2. Download the network file and store it locally, then use AVAudioPlayer to play the local file.
I have just written answer here.Check it and replace the url used there with yours..
you just replace
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"songname" ofType:#"mp3"];
NSURL *newURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
with
NSString *soundFilePath = #"Your URL";
NSURL *newURL = [[NSURL alloc] initWithString: soundFilePath];
There is a proper documentation available at this link
But I think you should also check the error code you are getting by this way:
NSError *error;
bgPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:bgURL error:&error];
Hope this helps.