Readit Newssudara commented on Show HN: Audio plugin for circuit-bent MP3 compression sounds wildergardenaudio.com/mai... · Posted by u/wildergarden
This is amazing, I will def be playing with it (lossy is also my jam) and hi! I made pamplejuce, hope it worked ok for you, lemme know if anything was rough (its been growing up a bit lately)
One thing the article didn't mention is that a gaussian blur can be approximated with multiple passes of a box blur. Not sure how that would relate performance-wise to the discussed stack blur algorithm. The code would probably be a bit simpler, anyway.
I'm interested in this idea. I think I got confused at some point and mistakenly thought box blur was a 2D kernel and so it wouldn't perform great. vImage does contain a box blur but I haven't checked its performance (I did check the tent blur and it was so-so...) https://developer.apple.com/documentation/accelerate/blurrin...
std::deque will never beat your hand-rolled ring buffer. It's a container, it will spend time managing memory every time you walk off the end of a chunk. If it's implemented right*, it will hold onto a chunk which fell off, and will only allocate twice. If it's implemented wrong*, it will allocate after `chunksize` pushes, and free every `chunksize` pops (which might be handled properly by your allocator). But it's still going to need to shuffle those chunks around, adding unnecessary overhead because you're using a ring in a way that is a perfect fit for your application: you use the value you're popping every time you push.
* for your purpose! Therein lies the challenge of writing standard libraries... choices must be made.
Thanks for this!
My latest favorite: Oh God, Hear My Sighs: https://soundcloud.com/nick66/oh-god-hear-my-sighs-bach