So I have an app which plays many short sound clips. I need to know when the sounds are finished playing, and I need to use mp3s, so I'm using AVFoundation for the sound playback.
When a sound is actively playing, and the user uses the hardware volume buttons, the playback volume changes. Problem is, the app is NOT constantly playing sounds, and when it's not, and the hardware buttons are used, the RINGER volume gets adjusted instead.
How do I set it up so, as long as the app is running, the user can adjust the playback volume?
Thanks!
Turns out this can be accomplished by allocating an AVAudioPlayer with any valid sound file and calling the prepareToPlay method, without ever calling the play method.
Works perfectly.
Start an AudioSession and don't stop it when you're not playing sounds.
so you want to disable ringer playback volume as long as the app is running? therefore the hardware controls will only adjust the app playback sounds?
i dont think this is possible unless you are "always playing sound" for example, many games are always playing background music or what have you.
You might be able to accomplish this by constantly playing a 0 volume sound as long as your app is running. You could then play your sound clips over it.
How do I play multiple sounds simultaneously?
Related
When playing an audio file in watchOS (using SpriteKit):
run(SKAction.playSoundFileNamed("ready.wav", waitForCompletion:false))
It will works until you background the app (says face the watch outwards) and back, then the audio file cannot be played anymore.
I have tried many workarounds, including setting UIBackgroundModes to audio, but the sound will always stop working after the app is background and back. Any solution?
PS: I think I might have found the answer: use AVAudioPlayer instead of SKAction.
You need to start HKWorkoutSession and in info.plist enable workout background processing. Don't need the audio to play in background, just continue to play once it comes back from background.
Use AVAudioPlayer instead of SKAction. This works.
Only SKAction.playSoundFileNamed has this issue.
I am working on the game. And I have some issue with sounds.
I use system sounds to acknowledge a player, when he/she presses a button. These sounds respect the volume set by a player, when other sounds are playing (I use AVAudioPlayers and AudioQueues). But when a system sound is only to play, it ignore a volume set by player and plays at a ringer's volume.
How to force system sounds to respect a volume set by a player even when is no other sounds played?
Assuming you are meaning that players are setting the volume using the side volume buttons on the device:
I had the same problem getting SystemSound to respect the volume buttons but found a setting in "Settings"/"Sounds"/"Ringer and Alerts"/"Change With Buttons" that was "OFF" by default. Switching that to "ON" made it work.
How are your players (I assume you mean the people playing the game) setting the volume -- through the device's volume control, or through your app interface? If the latter, then this won't work, since system sounds should always play at the device volume.
According to the Multimedia Programming Guide, "Sounds play at the current system audio volume, with no programmatic volume control available."
I don't know why your system sounds would change volume when an AVAudioPlayer sound is playing. If that's the case, can you loop a silent sound with AVAudioPlayer when you're not playing other sounds? Otherwise I would try playing all sounds with AVAudioPlayer so that you have direct control over the volume.
I am writing an iPad app that uses the "Flite" text-to-speech engine to announce specific events. The Flite engine uses an AVAudioPlayer instance to play the speech audio once it renders. For fun, I decided to add some simple controls to my app to allow the user to control iPod playback (next, prev, play/pause and volume - the basics) while my app is running using MPMusicPlayerController (of course).
The problem I am having is that when I adjust the iPod volume using MPMusicPlayerController, all of my audio is affected, including other sound effects and the speech audio. I set the volume for these other audio players (AVAudioPlayer instances) to 1.0 before playing the sound but it seems that the volume is always capped at whatever the iPod player volume is set to...
Is this normal? And what can I do to get around it? I want my app's audio to play at system full volume regardless of the volume level of the iPod player. (Example: The user had set the system volume to 80% of the device's max. I want my app to play audio at 100% of that 80% while allowing the user to adjust the iPod audio playback to 0-100% of that 80%.) Note: I am not interested in "ducking" but setting the iPod volume lower at all times while my app is running (background music).
I also have the problem, that -sometimes- when you first launch the app and press play on the iPod player (which sends the [player play] call), the iPod does not respond. If I press the home button, go into the iPod app and start playback then, once returning to my app, it works fine. What the deal with that?
Thanks in advance for any help!!
It could be something to do with the audio session category you've specified. Check out the Audio Session Programming Guide to see if you've chosen the right category.
The volume buttons on the side control the system volume and by extension the volume of your app's sounds.
I guess it's considered to be the Master volume control.
you can set the volume for specific samples or sounds using the AVItem's setVolume
[item setVolume]
You can create an AVItem to reference an existing sound file in your application or on the iphone. The code is pretty simple and looks like this -->
AVItem *item [[AVItem alloc]
initWithPath:#"the file"];
[item setVolume];
btw, this will not affect the rest of the audio channel (instantiated by some kinda AVController object) and the volume that you've set in your code will not be displayed on you screen so im not sure if you can change it at run time.
I am playing sounds in loop in my app. So it should continue playing through out the app. but sometimes it stops after playing sound for 3/4 times.I don't understand whats happening.
I am using audio-toolbox framework for playing sound. creating audio queue and then playing sounds in loop. I am also playing sound from ipod library using mediaplayer. Same thing happening with song from ipod.
I have set [musicPlayer setRepeatMode: MPMusicRepeatModeOne]; but still it stops after 3/4 times.
How exactly are you playing the sound? Show us the code. Do you use System Sound Services? They are not meant to play longer sounds, quote Audio Toolbox Reference:
You can use System Sound Services to
play short (30 seconds or less)
sounds.
This could be the source of your problem. But until you show us the code we can’t but guess.
I'm using AVAudioPlayer to play sounds on a game. When the user locks the device, I pause the game (and send it to a resume view) and want all the sounds to stop playing.
However, since the resume view is the same I use when loading a saved game, that view triggers a sound using an AVAudioPlayer. When it does so with the screen locked, the sound is audible, even though I'm setting the audio session to kAudioSessionCategory_SoloAmbientSound.
Does anyone know how to stop all sounds even if AVAudioPlayer play is called?
I tried calling this method:
AudioSessionSetActive(false)
but it didn't help.
Update: I'm currently setting the volume to 0.0 when the device is locked, however, I wanted to know if there was a built-in way via AudioSessions, etc.
Thank you
The best way I could find is to set the volume to 0 on lock events, and restore it when the device gets unlocked.