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• how to remove noise from buffer

  7 décembre 2013, par Ari

  I am integrating an media player kind of app

  I have converted the audio file format into buffer, and I have applied bass,treble filters with high gain then i got noise.How to minimise or eliminate that noise from audio in ffmpeg or is there any another way such that i can remove noise using java code by doing changes in byte i.e(audio buffer)

  here is my code :

      void playSound(byte[] buf, final int size) 
  
   {     
  
       trackStereo.write(buf, 0,size);
  
       trackStereo.play();
  
  
  
      buf = null;
  
   }
  
  bufSizeStereo =  AudioTrack.getMinBufferSize(44100,
  
    AudioFormat.CHANNEL_OUT_STEREO,
  
   AudioFormat.ENCODING_PCM_16BIT);
  
      trackStereo = new AudioTrack(AudioManager.STREAM_MUSIC, 44100,
  
  AudioFormat.CHANNEL_OUT_STEREO,
  
  AudioFormat.ENCODING_PCM_16BIT, bufSizeStereo,
  
  AudioTrack.MODE_STREAM);
  
      bytes = new byte[bufSizeStereo];

  how remove noise from byte before playing the audio

  Thanks

• New Piwik 2.0 public beta for testers

  16 octobre 2013, par matt

  Dear Piwik community,

  We are excited to announce the release of the first public beta version of Piwik 2.0.

  This is software still in development and we really don’t recommend that you run it on a production site — set up a test database just to play with the new version.

  Piwik 2.0 is a major update from Piwik 1.12 and is the result of 5 months of work on the platform !

  What’s changed ?

  We focused on upgrading Piwik source code quality and maintainability : upgraded to PHP 5.3 using namespaces, changed templating library to Twig, started using composer, using Less as well as css, improved QA tests, introduced new Screenshots tests, refactored translations to nice JSON format, refactored LOTS of code, added documentation….

  There also performance improvements, in particular the “All Websites Dashboard” is now usable with 20,000+ websites !

  Several bugs were fixed and we added some very-special-and-exciting new features.

  See the list of closed tickets in Piwik 2.0, or learn more about our recent developments in the Development update blog post.

  Piwik 2 is the open platform for your analytics data !

  How to update to Piwik 2.0 beta ?

  1. You can tell Piwik to use the latest beta from within the user interface. See this FAQ : [piwik.org]
  2. or alternatively you may download the latest beta from the build server, upload these files on top of your existing piwik files, and visit Piwik to upgrade.

  Beta cycle
  The more you test the beta, the more stable our release candidates and our final release will be. If you think you’ve found a bug, you can post it in this forum post. Or, if you’re comfortable writing a reproducible bug report, file one. The stable Piwik 2.0 release is planned for mid-November !

  Happy testing,

  PS : if you are interested in professional support for Piwik, or custom feature development, contact the Piwik experts.

• Any rebuilt dynamic ffmpeg library to use with OpenCV on Ubuntu ?

  24 octobre 2016, par Sonny MT

  I’m trying to use OpenCV on Ubuntu to open an MP4 video file.
  The code below failed with no error or warning.

  final VideoCapture camera = new VideoCapture("test-video.mp4");

  There are some guides saying that OpenCV needs underlying ffmpeg dynamic library in order to keep its BSD license.
  Is there any rebuilt ffmpeg library for this purpose ?
  Thanks.