Ok so basically I'm working on this pygame game and I'm using the mixer sub module for sounds. However, in pygame if you want to stop a sound, the sound must finish its cycle until it can be stopped. For all my sounds this is ok as they can be a looped 1 second sound. However, I use a falling sound which needs to constantly play in a cycle, but cycling a falling sound that is only 1 second long doesn't sound very effective. So, ultimately I want to know if there is a way to stop a 7 second sound loop instantly without it finishing a cycle.
According to the pygame documentation for pygame.mixer
pygame.mixer.pause()
will temporarily stop playback of all sound channels. You can start them all playing again with;
pygame.mixer.unpause()
For an individual sound, whilst it will stop after a full cycle, you can immediately affect it's volume with;
pygame.mixer.Sound.set_volume(0)
So what I'd try first is stopping the sound at the same time as setting it's volume to zero and seeing if that solves your problem. Alternatively, you can split your mixer into Channels for better controlling sound playback, which will give you the ability to use
pygame.mixer.Channel.pause()
pygame.mixer.Channel.unpause()
On specific groups of sounds rather than all sound. You create a mixer channel with;
pygame.mixer.Channel(id)
You can then play specific sounds on that channel with;
pygame.mixer.Channel.play(Sound, loops=0, maxtime=0, fade_ms=0)
This would also allow you to more dynamically adjust the levels of various types of sounds in your game - for example, environment, music, weather, voices and how they overlap each other, just keep in mind a channel can only play one sound at a time. Because of this, it may by prudent to use;
free_channel = pygame.mixer.find_channel()
free_channel.play(Sound)
or more simply;
pygame.mixer.find_channel().play(Sound)
For everything except your 'falling' channel.
Related
How can I manipulate the volume of the audio loaded via pyglet.media.load?
The reason is that I have to repeat a sound repeatedly (eg bullets), but if I use the Player, the sound is queued to be able to play it and plays it only once using .play() (eg bullet = pyglet.media.load("bullet.wav", streaming=False) audioPlayer = pyglet.media.Player() audioPlayer.queue(bullet) if the audioPlayer.play() command is used several times, for example from a key, it is executed only once and that's it)
If I don't use the Player, I can use the sound constantly, but at that point I can no longer manipulate the volume of the audio. (eg bullet = pyglet.media.load("bullet.wav", streaming=False) bullet.play())
So how can I go about solving the problem? I don't have much experience using Pyglet audio, so I'm probably ignoring something I'm not aware of.
The audio player is the correct approach as you can set volume on the player.
audioPlayer.volume = 0.5
Under the hood all the media.play() command does is create a Player instance, queue and play it. If you want to replay something, simply queue the source and play the player again. If you need audio overlaps, then you would create separate Player instances every time, like media.play() would.
I would like to know how I can start an audio without having to enter the Pyglet loop. My question is based on the fact that I'm already using a loop, for Pygame. Unfortunately, with the latter, I found the fact that it has an inaccurate control with regard to the volume of the audio. So I wanted to use Pyglet to play it. The fact is that I can not allow myself to start a loop with Pyglet, because it blocks the script, so, returning to the question, how can I use the audio playback event independently?
song = "choy_san_dou.ogg"
pygame.init()
pygame.display.set_mode((200,100))
pygame.mixer.init()
pygame.mixer.music.load(song)
pygame.mixer.music.set_volume(0.1)
pygame.mixer.music.play(0)
I am unable to find a way to fade in the volume when the song is loaded, means to have the volume of the song slowly increase until a max volume instead of blasting it off full volume from the very beginning. How to do it?
Another problem is this, I must declare
pygame.display.set_mode((200,100))
or the sound won't play. The program is actually running because after time of the sound has elapsed, the subsequent steps in the program continues. Why is it this way? I am testing it on windows pc, with the intention of transferring it to a raspberry pi later.
The pygame.mixer module has a Sound class (doc: http://www.pygame.org/docs/ref/mixer.html) that takes a file name as input and converts the file contents to a Sound object. Sound objects have a method play() where you can specify an amount of time where the Sound is faded in (you likely want to make it much shorter than the actual length of the Sound). I suggest you read the documentation to get the gist of how pygame.mixer works. If you want to alter the Sound object, such as adding fade-in or fade-out, there's the pygame.sndarray module that can convert a Sound object to a numpy array and vice versa, though you'll need to use numpy or scipy to do stuff with that array (I recommend the free Anaconda package).
The difference between the music and the mixer module is that the music module STREAMS data to playback, while the mixer module handles data saved to main memory.
I am searching for a way/framework to play at least 3 music files at one in a python application. It should run at least under ubuntu and mac as well as on the raspberry pi.
I need per channel/music file/"deck" that is played:
Control of the Volume of the Playback
Control of the start position of the playback
Play and Pause/Resume functionality
Should support mp3 (Not a must but would be great!)
Great would be built in repeat functionality really great would be a fade to the next iteration when the song is over.
If I can also play at least two video files with audio over the same framework, this would be great, but is not a must.
Has anyone an Idea? I already tried pygame but their player can play just one music file at once or has no control over the playback position.
I need that for a theatre where a background sound should be played (and started simultaneosly with the light) and when it is over, a next file fades over. while that is happening there are some effects (e.g. a bell) at a third audio layer.
I finally got an answer/workaround.
I am using pythons multiprocessing class/functionality to run multiple pygame instances.
So i can play more than one music file at a time with fully control over playmode and playback position.
I'm using the pygame function pygame.time.delay() to make pygame freeze while presenting some pictures or text, and I want to play a sound at the same time.
The problem, I think, is that in order for pygame mixer to work the main loop must be running, so putting the system on wait it also stops the mixer.
Any easy way to solve this problem? thanks
pygame.time.delay() is a bad idea for waiting while presenting things, it not only will prevent you from playing music it can also freeze your screen (blank screen).
You should process events and update the display although you have static image.
Some alternatives are:
Use a counter in your loop to know how long you should keep the same image in the screen.
Use a timer to receive a User Event that will notify you that you need to change the current state.