Android :: 3434 (audio Latency) - Music Applike NanoStudio For IPhone
Sep 29, 2010
This might not be a big deal to most but today, I went to the Android market looking for a music app, something like NanoStudio for iPhone. I found a lot of 2nd rate loop creation synth nonsense. After trying different free versions of paid software I asked myself "why are there no good music apps for Android?"
I emailed the creators of NanoStudio to ask if there are any plans to release an Android version of their software. here is the reply: "Not until they get their act together with audio latency, no. Shame really because NanoStudio's written to be cross platform" This greatly disappointed me. I am a music producer going on 10 years (hip hop, Trip hop, Electronic, etc..) so you can understand my interest in this issue. iphone, iPod have amazing music apps of this sort. Android has nothing close.
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Oct 10, 2010
If the Mods decide to delete this and direct you to the OP then thats fine. I just want to spread awareness if this issue. This might not be a big deal to most but I went to the Android market looking for a music app, something like NanoStudio for iPhone. I found a lot of 2nd rate loop creation synth nonsense. After trying different free versions of paid software I asked myself "why are there no good music apps for Android?"
I emailed the creators of NanoStudio to ask if there are any plans to release an Android version of their software. here is the reply: "Not until they get their act together with audio latency, no. Shame really because NanoStudio's written to be cross platform" This greatly disappointed me. I am a music producer going on 10 years (hip hop, Trip hop, Electronic, etc..) so you can understand my interest in this issue. iphone, iPod have amazing music apps of this sort. Android has nothing close.
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Sep 19, 2009
What are my options for playing simultaneous audio on an Android device with the least amount of latency? Am I going to get anything half decent out of the canned SDK, or is that asking too much? The documentation claims that the SoundPool class is capable of playing multiple sounds simultaneously with relatively good performance, but after running some tests in the emulator and on a physical device it seems pretty weak. Is there maybe a trick to it, or do I have to go to a much lower level api for this kind of thing? I've tried using a single sound pool with multiple samples loaded, and I've tried multiple sound pools each managing a single sample. I'm preloading everything, so that when I attempt to play back I have no additional code being executed other than the call to SoundPool.play().
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Apr 12, 2010
Despite everything I have read about the difficulty of making low latency audio apps in Android, I am giving it a shot. To start, I loaded each note in an octave into a SoundPool, and then looped through each note that was to be played on that beat and called play(). This didn't even come close to being accurate enough for me, and got especially bad if a lot of notes were being played at once.
From what I read, the only way to do something like this is to mix the audio yourself, though I am not entirely sure how to go about this. My initial thought is that for each beat, I could precompute the sound the sound that is to be played (i.e., combine the wav's), and then pass that stream to an AudioTrack when it is time to be played.
Are there any good examples out there for how to mix audio like this, or libraries I could use to do this for me? How have coders of other music apps dealt with this?
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Oct 26, 2009
I first have to say that I'm biased, 'cus I like to write music apps (like music generation apps). However, this affects games as well. It's somewhat disappointing how OpenGL has made it into the NDK now but there isn't any NDK methods to get to sound to have faster access. Over the weekend I did some more testing and if you make a "drum" app, for example, and play the sound using either SoundPool or AudioTrack, you will get about a 100ms delay buffer, which is clearly audible (gap).
I made a test app where when you touch the screen, upon the DOWN event, it would play a short sound (like a drum sound). It clearly was not real time responsive or even close - you could hear the delay. I'd be interested to know if anyone who has made a game has any trouble with sounds? It seems like they aren't going to really trigger real time enough if you use SoundPool, for example. Am I completely wrong? Seems like your game is going to perform an action, play a sound, but the sound will have latency which I would think would throw off the game a bit..................
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Jul 14, 2010
How can I make my simple site, on which the user can choose to play a number of music clips by clicking on little "play" buttons on the page (think of Amazon's "preview" on their product pages for CDs), work on mobile devices?
[I originally created the page thinking only of desktop browsers, so currently it works by using Flash. I know that won't work at least on the iphone.]
Will I have to build a platform-specific app for all major mobile platforms to provide this kind of simple interface? If so, can you recommend a framework that will let me do this in "write once, run everywhere" fashion?
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Aug 24, 2012
My MID mini-tablet (Android OS 4.0.3) has a mini-HDMI port. I have the mini-HDMI to female HDMI adapter and HDMI cable. Can I output music from the supplied music app to an audio system using HDMI? (Using the headphone jack is not practical due to the low volume output by the device.)
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Aug 19, 2010
On the iPhone you can double press the home button from the desktop or within any app and it will bring up a small popup for music player. Does Android have a feature like that?
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Dec 14, 2009
I am currently working on a music app and am starting to think about how audio playback should work. At any given point in time, a user is able to play multiple notes from multiple instruments.
My initial thought was to use JET, but I am thinking it may be too limited given that I also would like to:
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Mar 9, 2010
I am working on a project using HTC magic which requires the data from the electronic compass, including both the accelerometer and magnetic sensor. But I find that there is a significant latency between the move of the phone and the trigger of the sensorChanged event. In other word, the acceleration and magnetic data obtained from sensor are updated about half of a second after my motion. And I have several questions about the problem as follow. Are the orientation data computed by the acceleration and magnetic data? Or are there a physical sensor for orientation? Does the latency result from the android API (using the event) or the physical limitation of the electronic compass? It is said that the model of the electronic compass is AK8976A from Asahi Kasei. Does anybody have the datasheet or know the frequency of the sampling? Any idea to improve the real-time experience?
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Apr 13, 2010
We are developing an Android video conferencing application. After examining some already existing live-stream applications , we came to the conclusion that all or almost all existing applications have a delay of 3 to 10 seconds. The application we are developing was tested receiving a video stream on the Android device and the same video stream on VLC at the same time.The result of the test is that VLC shows the same part of the video 2 to 10 seconds earlier than our Android application on the phone(HTC hero) depending on the rtsp link used. we haven't found what is the main cause of the delay and also dont know if it is possible to reduce that delay. In our case, as it comes to video conferencing, the delay should be lower than 2 seconds at least. Do you guys have some information about the cause of the delay or even how to reduce it?
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Jun 6, 2010
I'm writing an Augmented Reality codes that should works in realtime,
But the VM's garbage collection hinders my program's performance.
I checked my program's execution time for each in OnPrevFrame(byte[], Camera)
and it execution time increases from around 50ms to 120ms at just after each garbage collection.
I copied parts of logs below. (local time is just before and after of signal processing, and global time is time stamps for every onPreviewFrame() calling )Also I executed onPreviewFrame without any signal processing on it, but
the garbage collection is also carried showing debugging message around 60ms it spends for memory release.
Is this garbage collection come from releasing byte[] yuvs image data? ( i uses 320x240 thumb nail )
then this clearly comes from Java's limitation, so there will be no hope for improvement unless
I found a way to directly access camera device? do you think this is feasible? Hope listen to others' comments.
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Jul 8, 2009
I am planning to give mobile phone development a shot and was thinking about making some simple multiplayer games. I know latency over local wifi is probably fine but what are the issues with latency over GPRS/3G?
I've searched and the best I've seen is someone saying it was 'high', without presenting any concrete numbers. I suppose latency fluctuations are important as well - does anyone have any info on this?
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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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Jul 27, 2010
I am writing a music player for esoteric music formats, and have defined mime types for them in my Manifest.
However, the standard music player is always started even though it can't handle the format. Looking at logcat I see;
: D/MediaScannerService( 688): IMediaScannerService.scanFile: / sdcard/download/Cybernoid.sid mimeType: audio/prs.sid : I/ActivityManager( 578): Stopping service: com.android.providers.media/.MediaScannerService : I/ActivityManager( 578): Starting activity: Intent { action=android.intent.action.VIEW data=file:///sdcard/download/ Cybernoid.sid type=audio/prs.sid flags=0x4000000 comp={com.android.music/com.android.music.MediaPlaybackActivity} }
.. so it seems the component is explicitly set to the music player ? Is there any way around this ?
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May 13, 2009
Now when I recording a file using sound recorder. But I cannot find it in the application of Music. When I reboot, I can find it in the Music.
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Feb 16, 2009
As mentioned audio stops after some random number of times when played from either Music/Video player. After some debugging, I found that the problem is:
In "android_audio_output.cpp"->audout_thread_func() there is a call to wait(iAudioThreadSem->Wait()) just before the while(1) and it is waiting indefinitely for something.
Can anybody tell me what is it waiting for and why is it not able to come out? From what I can understand, it is waiting for a signal (semaphore) but where is it expecting a signal from?
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Mar 8, 2010
Music101 question: Im new to Android and I have a CLIQ.
I just copyied music files from my Windows-based pc the they all copied with no problem. The issue is when I go to play the music I have to force close the app repeatedly then I get an error message saying "sorry player does not support this type of audio file".
Is there an app available to convert files or did I mess up the path in someway that the songs, all mp3's btw, just aren't being located properly?
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Jul 20, 2010
Any music player that can stream audio formats aac+,pls,m3u.asx,.ram?
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Jan 25, 2013
I'm very much interested in being able to send my music/audio from my phone to a DLNA renderer on my home network. There are plenty of individual apps out there to do this, such as BubbleUPnP, Twonky, etc, or even indeed the music app built in to my HTC One X. However what I'm wondering is if there's a way to have all music/audio re-directed over WiFi to a DLNA renderer?
What I'm looking for would be something similar to when you plug in headphones or connect a Bluetooth audio device: any application that plays media has the audio directed to the headphones or bluetooth connection, instead of the internal phone speaker - that's exactly what I want, but with the audio being directed over WiFi to a DLNA renderer. I'd configure the app/service/whatever to send all audio over DLNA, and then it doesn't matter whether I'm using Dogcatcher, Spotify, the built-in Music app or Google Music - all audio automatically gets directed to the DLNA renderer.
Having to use yet another app on top of the various media applications I already use is a real pain; plus I highly doubt any of the existing applications will support Spotify streams (Twonky and BubbleUPnP don't), and I had little success when experimenting with Twonky yesterday. As mentioned my built-in music app already does this so I'm already part of the way there, but I'd like it to be system-wide rather than app specific.
The DLNA renderer I'll be using will either be a standard PC running XBMC, or a headless Raspberry Pi embedded Linux computer; either way they'll both be fully UPnP/DLNA compliant.
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Mar 3, 2010
When will this be fixed! I have a kernal with the supposed 2.0.1 fix however when I put volume to 100%(for jamming in my car) I still get the crackling audio bug! Is there something I can do or will I just have to wait for motorola to fix it?
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Sep 27, 2010
So the stock music player has the 5.1 setting, which to me makes a huge difference over other players. How many of you feel trapped into using it because it sounds better, like me? i wish I could get the same option on other players
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Sep 8, 2010
I got myself a bluetooth FM transmitter for my work van and tested it out today. For receiving and making calls it worked fine with the audio coming out through the car's speakers. But if I play music or my navigation the audio is coming out through the phones speaker (the one on the back) rather than through the cars speakers. I don't know what setting I've got wrong.
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Aug 11, 2010
i'm big into freestyling. i have over 1500 instrumentals on my phone.i can't figure out how to play them and record myself (either audio or video) at the same time.i figure i'm either gonna have to download a new music player that won't close or a video/audio recorder that won't close the "Music" player that came with my evo.and before anyone goes tryin to be smart, i realize that even if i was able to accomplish such an action the quality would probably be really low due to speaker and mic being so close.my intent is more of a "on the fly lyric composition" rather than a " put myself on youtube to show everyone how awesome i am"
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Jan 10, 2010
Looking for a adapter to play droid over car radio. Is there a such thing as a headphone plug in into a audio video cords?
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Apr 29, 2014
Having problem playing music through audio device using bluetooth (Bluetooth Speaker).. (All cm7 based rom for galaxy pocket have this problem)
Device: Galaxy Pocket
Rom: Reincarnation V5
Kernel: Getux Kernel V1
Added Tweaks: KickAss kernelizer,Supercharger
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Apr 27, 2010
I love my new HTC Desire and the only thing lacking is a music player that plays at variable speed. I listen to a lot of audio books and my old Sansa Clip player gives the option of playing audio at a faster speed (so you can go finish a book faster).The normal android player doesn't seem to have this option. Is there another player that does?
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May 26, 2010
So i didn't put any unofficial software,in other words,everything is as it came out of the store (except lots of apps ofc. the problem is that i doesn't play any sound when i want to play music,or with some app (without headphones,when i have them then it's normal) but when someone calls me or i set an alarm then it plays perfectly normal so i'm confused...it's obvious that speaker is not broken.
Then today suddenly i can't hear anything when i'm in a call,and the person from the other side also doesn't hear me,i also don't know why is that...i'm not an expert for this kinda things and actually i'm quite knew in this world.
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Apr 9, 2010
I'm using EStrong's File Manager and it has the ability to work over a network. I set up my Linux desktop to share my pictures and music folders. I can connect to the shares via Estrongs and view the pictures, as well as play music. However, so far I can only play 1 song at a time. Does anyone know of a music app that would allow me to create a playlist and stream it from my computer to my phone via wi-fi?
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Jun 21, 2010
How do you rewind and fast forward with htc's sense music app? You would think that holding down either button would do it but it doesn't. I know you can click the scroll bar but it gets annoying when I want to skip say 10 seconds. Any ideas anyone?
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