java - Sound Processing - Beat Matching Music Player on Android -

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So I want to create a new music player for Android, it will be an open source and if you think that this idea is any Feel free to tell me also good and maybe we can work on it.

I know that it is possible to slow down and slow down a song and to make the sound normal so that the voices and instruments are still the same pitch

I want to make a media playback for Android for Zenders;

  • Beat can be installed accelerometer or manually
  • In run Alarms and notifications (live or timer) automatically present at points

    • Now I know that it will fall down with many use cases (slow song looks stupid, song mess Beating is defeating the change within), but I think they can be away C ++ (Android ND To use), I need to know what is necessary to start writing an application, which will analyze and adjust the current.

    Would it be possible to do this on the fly? Which approach will you use? A server that streams over the phone? Maybe the offline analysis of songs on the desktop gets synched on your device via tether?

    If this is a lot of questions for a post then I am interested in the easiest way to review the wave for most MP3s, beat that over, to manipulate, to change the beat For, the next detail of my interest will be.

    I had a small dirty MP3 player that could double the speed of the flight, so I'm sure it can be done!

    This is technically feasible on a smartphone-type device, However, it is extremely difficult to achieve good pitch-shifting and time-drag effect on a powerful PC in real time.

    Pet-Transfer and Time-Stretching Realtime Get on a Reliable Mobile Device (I cant net cf on Samsung i760 smartphone ) Without a processor without more taxation than the normal MP3 playback is not more expensive). The effect is not very good, although it does not look too bad if the pitch and time changes are relatively small.

    The automatic determination of the speed of a song can be determined from time to time in determining the determination in real time, but this part of this process can be done before playback, or that the next song But the current song can be done before it is complete. I have never done this, so I do not know.

    Whatever you have mentioned is relatively easy. However: I do not know how much easier it is than Android's API audio output or even if it allows lower level access to audio playback that this project will be required.


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