Bugzilla – Bug 2573
High / Low Pass filters limited to ~94 mins stereo at 44100 Hz
Last modified: 2021-04-24 13:02:35 UTC
When applying either High Pass Filter or Low Pass Filter to a stereo track longer than about 95 minutes, the effect silently fails. This is a regression and has been reported in the wild. Reported on Windows and confirmed on Linux, so assuming all platforms. Setting as P2 because we can and should at least improve this (preferably fix it, but I don't yet know how difficult that will be). I'll assign this to myself initially.
Fix committed at https://github.com/audacity/audacity/commit/daf2b3c
Temporarily reopening as there may be a better fix which I will be testing shortly.
Alternative fix committed at https://github.com/audacity/audacity/commit/2cc6dcc This version matches the fix in Nyquist 3.16.
(In reply to Steve Daulton from comment #3) Tested on W10 with Audacity 3.0.0 2cc6dcc I tested the steps and both High Pass and Low Pass filters work cirrectly on 2 hours of stero. Following a discussion with Steve where he said >The bug was in Nyquist itself rather than in plug-ins, so any plug-ins >that use functions that use MULTICHAN-EXPAND would be affected when >processing stereo tracks. My fix was for MULTICHAN-EXPAND and I didn't >need to touch the filter code at all. So I also tested Notch Filter and Studio Fade Out, bith of which also failed on the prvious alpha build before Steve's fix Audacity 3.0.0 0a8a25e
Tested on macOS 10.15.7 with Audacity 3.0.0 2cc6dcc all 4 Nyquist effects ran to completion properly
