Android :: Create Sound Effects Manipulation On Audio Track?
Dec 28, 2009
I am creating an android app that basically records an applies an "Effect" on the audio track then plays it back. I got my app to record an play back but I am stuck an not sure where do go from here. I have been Googling for days now trying to find a open source audio library or some way to change the audio after I record it. I currently have it setup to play back using SoundPool an I't lets me speed up an slow down the audio. I would like to do things like change pitch an add echo etc. I will appreciate any responses because I am totally stumped right now.
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Oct 9, 2009
I have pretty common question: is there any bug-free way to implement sound effects in a game?Or we only have unpredictable SoundPool with its horrible bugs? Or MediaPlayer that can only play one sound at once and which is not solution for a game at all?In fact, it is disturbing question for numerous developers right now!
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Jun 15, 2009
Several users reported that after starting our application on HTC Magic it only shows a blue screen with music and sound effects. It work well on G1 with 1.5 though. The application is using SurvaceView/ OpenGL ES with { EGL10.EGL_DEPTH_SIZE, 16, EGL10.EGL_NONE } EGLConfig attributes.
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Feb 7, 2014
I was wondering where the volume sound effects are. What I mean is when you go into settings --> sound-->volume ,and then change the volume, there is a sound that plays for each one. When I change the media volume there is a song that plays that I like. So where is the file stored. I am rooted and have a samsung phone.
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Jun 11, 2010
I'd like to make an Android app that lets a user apply cool effects to photos taken with the camera. There are already a few out there, I know, but I'd like to try my own hand at one.
I have been googling and stack-overflowing, but so far I've mostly found some references to published papers or books. I am ordering this one from Amazon presently - Digital Image Processing: An Algorithmic Introduction using Java
After some reading, I think I have a basic understanding of manipulating the RGB values for all the pixels in the image. My main question is how do I come up with a transformation that produces cool effects?
By cool effects I mean some like those in these iPhone apps:
I already have quite a bit of experience with Java, and I've made my first app for android already. Any ideas?
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Aug 24, 2010
I don't know if this setting was here before 2.2 or not but I just found it. The opition for the phone to make sound when locking or unlocking it. I now hear a simple clicking sound. Does anyone now how the change these 2 sounds, I have a few mechanical sounds that would compliment the Droid theme. The transformers sound effect would be the shit when unlocking...
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Sep 5, 2013
I'm having a spot of trouble trying out the ViPER4Android DSP plugin on my phone. While I have the corresponding apps and drivers installed, I'm unable to enable the DSP effect owing to fact that there is no "Music Effects" option in the Sound settings menu.
Is there some way to restore this option to the menu? I'm using an AOSP-based stock 4.0.4 ROM on my Huawei Ascend G600. Perhaps it can be done through the terminal/shell scripts or an init.d script?
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Mar 14, 2010
I have noticed a hissing noise when I play any music/videos via any earphones, this happens when volume is below half way and audio effects is turned on. any solutions?
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Mar 15, 2010
I like to know on which version of SDK does support 'AudioTrack' class? Does 'AudioTrack' can be used from 1.5 SDK, 1.6 SDK and 2.0 SDK?
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Sep 6, 2010
I'm an android starter I tused AudioTrack to play music But it just tell me filenotfoundexeception I try to play mp3 wav ogg (all in raw dir) I've no idea where is wrong? here are my code:
CODE:..................
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Jun 17, 2009
This may be impossible but is there any way that I can get a smaller buffer size for AudioTrack than what is provided by getMinBufferSize method?
This is how I am instantiating AudioTrack right now: SR = 44100; bufSize = AudioTrack.getMinBufferSize(SR, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT); audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, SR, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufSize, AudioTrack.MODE_STREAM);
With sample rate of 44100, getMinBufferSize always returns 4800. If I try to make the buffer size smaller than 4800 then I get the following error message: E/AudioTrack( 318): Invalid buffer size: minFrameCount 1200, frameCount 600 E/AudioTrack-JNI( 318): Error initializing AudioTrack E/AudioTrack-Java( 318): [ android.media.AudioTrack ] Error code -20 when initializing AudioTrack. D/AndroidRuntime( 318): Shutting down VM W/dalvikvm( 318): threadid=3: thread exiting with uncaught exception (group=0x4000fe70) E/AndroidRuntime( 318): Uncaught handler: thread main exiting due to uncaught exception I/CheckinService( 59): From server: Intent { action=android.server.checkin.FOTA_CANCEL } E/AndroidRuntime( 318): java.lang.RuntimeException: Unable to start activity Does anyone has any ideas how to over come this problem?
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May 18, 2010
I am trying to playback voice data which is received in form of RTP packets in my application. The class
Receiver.java extends thread is playing back the audio. The question is
1. For real time streaming operation how to configure the write(byte[], int offsetInBytes, int sizeInBytes) methods?
2. What is the function and purpose of getPlaybackHeadPosition() What is playback head position kindly explain! Note: The RTP packets I am receiving are not from a traditional Datagram Socket but rather then from Ad Hoc Network so there is unknow delay for receiving the RTP packets. I need to design the Receiver class to play back the voice as soon as packets are recieved. Kindly help me in this regard You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+ unsubscribe@ google groups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
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Feb 15, 2010
I want to play music from online mp3 link.I am reading the music data into a stream and trying to play it using audio track.But itz giving only noise.No music i could listen.here buffer is the audio data i am reading into.Same buffer I can play in MediaPlayer,,,But i could not play in audio track.
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Sep 13, 2010
I'm trying to find a good To-Do list/hierarchy list/Outlined List which would allow me to create track projects in outline fashion. Anyone using anything like that?
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Mar 2, 2010
Could someone show me in a snipet of code how to set the backlight always on in android ?
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Jun 23, 2010
The application allowed its users to control the volume of the artist; even mute it.How is this possible?Does adjusting artist sound/setting equalizer etc. mean performing some transformation of required frequencies? What sort of mathematics is required here(frequency domain transformations)?The application recorded users voice input via a mic. Assuming that the sound is recorded in some format, the application was able to mix the recording with the karaoke track(with artists voice muted). How can this be done?Did they play both the track and voice recording simultaneously? Or maybe they inserted additional frequency(channel?) in the original track, maybe replaced it?What sort of DSP is involved here? Is this possible in Java, Objective C?
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Feb 24, 2009
I'd like to create an audio recording in Android. (Actually, I just want access to the mic without recording it, but it seems that's not supported so I'll have to create a recording and tail the file). I'm having a very hard time getting started. Mostly I'm just hoping that someone from Google reads this and will update the documentation because the example won't compile - it looks like it's from some previous version of the SDK because there's an error in every other line. I made my best guess as to what the usage should be, but I keep getting a number of different exceptions. One question I had is whether I can just specify an arbitrary path to the MediaRecorder to start recording or whether I have to create an entry in the content database. The JavaDoc for MediaRecorder.setOutputFile isn't clear on what it's expecting.
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Oct 16, 2010
Hey, I have a problem with android programing when I try to record and then play the file that was just recored. I can both record and play the sound but the quality stinks. Its not just bad is really hard to listen to and sound abit like its a computer generated voice. I use the andriod SDK-emulator. The code that sets up the recording looks like this;
MediaRecorder recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();
And the code playing the file later looks like this;
MediaPlayer mp = new MediaPlayer(); mp.reset();
mp.setDataSource(path); mp.prepare(); mp.start();
I don't know what part that makes the audio file sound really bad or if its just the emulator that makes it bad and that it would work on a real phone.
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Dec 14, 2009
I'm using the SoundPool to play a series of small audio clips and am having issues with the audio when it starts. I have the audio attached to a button press. When I press the button mulitple times the tick persists. I was wondering if this was the audio file itself or is there something I need to do differently with the SoundPool other than play simply play the clip. These are .ogg files I created using Audacity. When I play them in my dekstop media player, they sound fine.
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Oct 11, 2010
I am trying to understand how to go about determining the frequency of various sounds captured on the phone via microphone. I am attempting to display a graph plotting the frequency of the note.
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Jun 28, 2010
I recently transferred the videos I had on my instinct to the evo. I happen to play one of them for someone but there was no sound/audio on the videos.does anyone know why this happened or how I can fix this? It sucks being able to see but not hear what's going on in the videos.
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Sep 26, 2010
Just made a video with my Motorola xt701. played it on the phone and computer it has no sound. Made another one with me screaming in the phone, still no sound. Do you have to have a mic plugged in to get sound when making a video or is there another issue??
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Mar 25, 2010
I am trying to play the bigger size audio wav file(which is >20 mb) using the following code(AudioTrack) on my Android 1.6 HTC device which basically has less memory. But i found device crash as soon as it executes reading, writing and play. But the same code works fine and plays the lesser size audio wav files(10kb, 20 kb files etc) very well.
P.S: I should play PCM(.wav) buffer sound, the reason behind why i use AudioTrack here. Though my device has lesser memory, how would i read bigger audio files bytes by bytes and play the sound to avoid crashing due to memory constraints. Code...
Could someone guide me please to play the AudioTrack code for bigger size wav files?
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Jan 22, 2013
I have a flash file that I open through smartswf and suddenly the audio is now echoing, like its playing the sound twice. It use to work OK on this ROM (cyanogenmod 10) with this app. It does the same with other flash files also. I have tried other apps and does the same thing, and tried reinstalling flash and rolling back to earlier versions with the same result.
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Feb 18, 2013
I recently rooted my kyocera rise and everything was fine until I decided to install beats audio. My first mistake before installing the drivers was not backing up anything, yes I know that's bad. Okay so I installed the drivers with beats audio from the market then rebooted. Now I have no sound at all. No ring no music nothing. And my phone is running a lot worse now. Now come to find out apparently beats audio is not removable. The drivers can't be removed. I really need sound. Is there a way to unroot and completely factory reset the phone through factory settings?
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Jun 1, 2010
does anyone know of an app that will let me create and set profiles that change the sms notification sound?I know apps that will change the standard notification sound / volume, but I specifically want to change the sms notification sound.
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Nov 4, 2010
how create thread in background for playing sound?
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Jul 15, 2010
For those of you who have the DX how is the sound on it through headphones when using it as a MP3 player?
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Feb 6, 2010
I plugged my Moto Droid into my truck today and used it for navagation. Sounded great. Later after I unplugged it and tried to make a call on the phone there was no audio coming from the phone. I had to reboot the phone to get it back. I think I read somthing about this someplace. I kinda remember something about the switch sticking in the audio jack. I've only used this jack twice now and the phone is only a month or so old. Is this a known issue?
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Sep 17, 2012
I am a student searching for a master who can teach me how to create or make a libs for audio. I wanna make a difference between the people to creating mods of audio.
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