I have a lot of sounds in my library. I randomly choose 10 of them and I have their names in an array.
The problem is that in air android I cant play them one after the other. I found some codes that play two of them but not more.
Related
I'm trying to create an app that can play two different media files, say Ambience.mp3 and fgAudio.mp3. I've created two different MediaPlayers, say ambienceMP and fgAudioMP.
Playing both the files at the same time is not an issue. I want to add two sliders that can control the volumes of each of the files separately. However, setVolume() doesn't work in this case and the other solutions that I found recommend different methods which seem overly complicated for this simple task (programming in a nutshell).
Is there a simple way to fix this, or do I need to import some library? I would highly appreciate some simple code that uses hard-coded volumes for each of the files, I can extend it to sliders myself.
I'm not sure if this is relevant, but I'm using Kotlin and not Java.
I'm developing a blu-ray menu with java (BD-J). I developed a simple loading animation. when running it on PS3, soft players (PowerDVD, TotalMedia Theatre, ...) and some hard players (Samsung ht-c6950w), there is no problem and it runs like a charm. But when running it on other hard players (LG, Panasonic, Samsung,...) nothing happens. You cannot see any image on the screen.
BD-J Xlets is JavaME.
The thing about JavaME (on both Blu-ray players and cellphones) is that it behaves differently on different devices. Different manufacturers simply implements it differently. (Hence why Java coders replaced the "Code once, run anywhere" with "Code once, debug everywhere").
Some Blu-ray players are very forgiving while others are very tricky.
So yes, you will need to debug on a lot of different players to make sure your Xlet runs on as many different devices as possible. (I think I have about 15 different players, bought on various flee markets and such).
Here are two things I've learned during my own research:
Some players require a video to be played before the BD-J works. So if you don't have any video in your project, then add a little 3-second long black screen and play it.
There's a folder called CERTIFICATE in the root of the disc. This folder needs to contain a file id.bdmv containing the ID of the disc - regardless of your BD-J Xlet is signed or not. Again; some players are forgiving about this - others aren't.
There aren't many places left for those interested in BD-J, but you can find some useful links at http://www.Blu-Play.com
Is it possible to add specific reverb to my sound effect/music track in libgdx?
I want to add outdoor/indoor reverb to make all tracks sounded the same.
I don't think that Libgdx has a mechanism to adding effects to sound. The Sound class delivers no function for this.
I see three solutions here:
Prepare two kinds of sounds (one with reverb one without - it is easy to do using software like Audacity - and play one or another due to environment of player's current being
Try to implement it yourself
I see that in the Sound class there is setPitch(long soundId, float pitch) method. Due to Wikipedia the reverb is just a kind of echo so maybe (but not for sure) you could achieve the effect by
making copy of sound
slowering it a little
lowering the volume
playing simultaneously with original sound
Find 3rd part library that will do it for you - the Google returns some examples of libs working with libgdx like SoundTouch Audio Processing Library - maybe you will find something usefull
First one is the easiest and if you are not afraid of space problems I would strongly recommend it to you (althought why not to try implementing it)
I've implemented reverb, positional audio, and arbitrary filters using OpenAL against the latest libgdx 1.10+/lwjgl 3+ with this demo code, based off of gdx-sfx (which only works with lwjgl 2) and libgdx-audio-effects.
I'd like to promote this into a fully fledged library at some point 😂
I'm struggling to choose between a vast number of audio programming languages and APIs. I'm very (totally) new to audio programming so please bear with me.
Software
I need to be able to:
Alter volume of different sounds before outputting them to anything (these sounds can have a variety of different origins, for example mp3s and microphone input)
phase shift sounds
superimpose sounds that I have tweaked (as per items 1 and 2)
control the output to each of 8 channels independently of one another
make this all happen on Windows7
These capabilities need be abstracted by a graphical frontend I will probably make myself. What I want to be able to do is create 'sound sources' and move them around a 3D environment along either pre-defined trajectories and/or in relation to the movement of whoever is inside the rig. The reason I want to do pitch bending is so I can mess with red-shift stuff.
I don't want to have to construct full tracks before-hand and just play them. I want the sound that is played to depend on external input from sensors as well as what I am doing on the frontend.
As far as I know this means I cant use any existing full audio making app.
The Question
I've been looking around for for the API or language I should use and I have not turned up a blank, quite the opposite actually. I'm struggling to narrow down my search. A lot of my problem stems from the fact that I have no experience in audio programming.
So, does anyone know off-hand of an API or language that meets my criteria?
Hardware stuff and goals
(I left this until last because I'm not sure how relevant it is)
My goal is to make three rings of speakers at different heights and to have enough control over them to be able to simulate any number of 'sound sources' within the array. The idea is to have someone stand in the middle of the rig and be able to make it sound like there are lots of things moving around them. To get this working I'm planning on doing a little trig and using 8 channels of audio from my PC. The maths is pretty straight forward, it just the rest that I need to worry about
What I want to do next is attach a bunch of cameras to the thing and do some simple image recognition stuff to be able to 'attach sound sources' to different objects. Eg. If someone is standing in the right place it can be made to seem as though all red balls quack like a duck, and all orange ones moan hauntingly.
This is not to detract from Richard Small's answer, but to comment on some of the other options out there:
If you are looking for something higher-level with which you can prototype and develop this faster, you want max/msp or it's open source competitor puredata. These are designed for musicians who are technically minded, but not so much for programmers. As a result, you can build this sort of thing quickly and efficiently.
You also have some lower level options: PortAudio can handle your audio I/O, you would have to do the sound generation and effects and so on on your own or with other libraries. Cinder and OpenFramewoks both provide interfaces for audio, cameras, and other stuff for "creative programming". I'm afraid I don't know if they meet your full requirements, but they are powerful and popular for this sort of thing so I encorage you to look at them.
The two major ones these days tend to be
WWise
WWise Download Link
FMOD
FMOD Download Link
These two engines may even in fact be overkill for what you need, but I can almost guarantee that they will be capable of anything you require.
I want to start on a hobby project that focuses on displaying audio files in a folder in a certain fashion and has the ability to play such an audio file and shows basic control options for playing. However, i'm struggling to find a fit programming language for this.
The displaying part shouldn't be too hard and can probably be done in most of the programming languages. The audio part is what concerns me the most since it's not the main focus of the project and should only do limited things (so it shouldn't be too hard) and i do not know anything about sound support in the programming languages i currently know. (Java, C and C++)
Specifically i would like to be able to do these things:
Play a sound file
Stop/pause a playing song
Adjust volume
Show a bar that displays the current position in the song
Most files will be .mp3 files but being able to process other formats is certainly a plus. Since this is just a small project it's ok if it runs just on Windows. Scalabilty would be nice but not required.
It would be nice to have a small overview of audio support/audio libraries of programming languages (i'm always up for something new) that can accomplish these simple things, in a not too complicated way, aswell as personal experiences.
In this way i hope to create a better understanding of which programming language fits my project best. (i would very much like to not have to change language mid-way the project)
--
Edit:
This is only for a later stage of the project if the first part was successfull: i will want to change the file names of the audio files that are displayed. (to make them follow a specific format)
I haven't written audio processing programs much, but I know a lot of them exist for C and C++. For Java perhaps, too, but I don't know Java. I had used audio with SDL in a game, but that doesn't have that many features and I don't recommend it.
There's this question asking for a library in C, and there are a couple of similar questions that SO brings up on the side. You may want to take a look at those.
You would also need to look for a library that loads different file types. SDL at least, only opens .wav files, which I believe most of the playback libraries would support. For MP3, you will most likely need an additional library. I know Audacity uses LAME Mp3 so I'm guessing that should be good.
Some of the functionalities you want is also doable by yourself. For example, knowing the length of the music and the amount you have already read, you will know how far in the audio you are. Adjusting the volume is also a multiplication (in the simplest case) that you can do on the audio data if the library doesn't provide it.
A very good choice seems to be PortAudio which is used by Audacity, and also recommended in the accepted answer of the question I mentioned above.
I've done audio apps in both Java and C++. Java development goes way faster because it's a more powerful language and has garbage collection, but JavaSound is a pretty awful solution for audio. Of course, there are wrappers for FFMPEG and other stuff, so you can get a lot of things working. Here's an example of a Java audio app: http://www.indabamusic.com/help/mantis
OTOH, C++ gives you lots of control, low latency and wealth of libraries. (another answer mentioned Portaudio, which is, indeed, great.) But you will definitely find it also has a much longer development cycle.
You can certainly do everything you want to do with either language.