• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Compressing Dance Recordings With FLAC

    January 18th, 2014
    music, tech  [html]
    When the Free Raisins run our own sound I record our playing to listen back to later. I keep these recordings, but seven tracks at 1GB each starts to add up. I could compress them as mp3s, but I might want the full-quality versions some day. I looked into lossless audio compression, and FLAC seems to be the most widely supported open codec. While I've seen people find compression ratios of about 50% for FLAC, I was expecting better than this because while I generally record a whole 3hr performance only some of that has much signal. Compressing at level 8 I ended up with files 67% smaller than whan I started:

    (The files at the far left, squished down to 14.3% of their original size, consist entirely of silence. This is because when using my vsl1818 with Audacity I can only record tracks 1 through N. If for some reason we've set things up so no one is plugged into track 4, I still end up with a recording of that track, 3hr of silence. Ignore these in computing the average and flac only managed to make things 66% smaller.)

    I could have combined multiple tracks from the same dance into one multi-track flac for better compression, but this seemed like too much hassle and too much chance of making files that would be hard to work with later.

    Comment via: google plus, facebook

    Recent posts on blogs I like:

    The Gift of It's Your Problem Now

    Recently a security hole in a certain open source Java library resulted in a worldwide emergency kerfuffle as, say, 40% of the possibly hundreds of millions of worldwide deployments of this library needed to be updated in a hurry. (The other 60% also …

    via apenwarr January 1, 2022

    The container throttling problem

    This is an excerpt from an internal document David Mackey and I co-authored in April 2019. The document is excerpted since much of the original doc was about comparing possible approaches to increasing efficency at Twitter, which is mostly information tha…

    via Posts on December 18, 2021

    Experiences in raising children in shared housing

    Sometimes I see posts about people’s hope to raise children in a group housing situation, and it often seems overly optimistic to me. In particular they seem to expect that there will be more shared childcare than I think should be expected. Today I talke…

    via The whole sky October 18, 2021

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact