Re: [Audacity-quality] Time Track alternatives
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From: Robert H. <aar...@gm...> - 2017-07-05 09:37:34
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On 05/07/2017, Steve the Fiddle <ste...@gm...> wrote: > On 5 July 2017 at 08:44, David Bailes <drb...@gm...> wrote: >> On Tue, Jul 4, 2017 at 3:14 PM, Steve the Fiddle >> <ste...@gm...> >> wrote: >>> >>> Attached is a "Sliding Speed Change" plug-in, which is hopefully >>> accessible and easy to use. >> >> >> this looks fine, > > > Useful enough to ship with Audacity, or just put it on the wiki > (http://wiki.audacityteam.org/wiki/Nyquist_Effect_Plug-ins) ? > It's rather a special case plug-in. I would rather put it on the WIKI. In fact, I would add a Category "Accessibility" where your excellent "Text-Envelope" plug-in could go as well. I use the latter a lot especially now that presets can be saved. Robert > Steve > > >> David. >> >>> >>> >>> Steve >>> >>> On 3 June 2017 at 14:24, Steve the Fiddle <ste...@gm...> >>> wrote: >>> > On 3 June 2017 at 13:16, David Bailes <drb...@gm...> wrote: >>> >> On Fri, Jun 2, 2017 at 11:21 AM, Steve the Fiddle >>> >> <ste...@gm...> >>> >> wrote: >>> >>> >>> >>> From a recent post on the forum: >>> >>> https://forum.audacityteam.org/viewtopic.php?f=39&t=95995 >>> >>> >>> >>> "I really find the Turntable Warp plugin very interesting. However, >>> >>> I've tried to modify it so that there is no amplitude change, nor >>> >>> Change Time (i.e. I want it to slide for the whole entire >>> >>> selection). >>> >>> Ever since I've tried to modify it, I never got it to work, So I >>> >>> need >>> >>> some help please." >>> >>> >>> >>> and then later, and most importantly: >>> >>> >>> >>> "What I am trying to do is change the speed from one point to >>> >>> another, >>> >>> that's all. In other words, create a Jaws-accessible version of >>> >>> timetracks." >>> >>> >>> >>> I'm aware that Time Tracks are not accessible. >>> >>> >>> >>> I'm guessing that "Sliding Time Scale / Pitch Shift" is accessible, >>> >>> but awkward to use (perhaps David can comment?) >>> >> >>> >> >>> >> Using Jaws, the names of the tempo change edit boxes get read out >>> >> twice >>> >> (so >>> >> that nvda reads them once), but apart from that, entering two values >>> >> in >>> >> these two edit boxes should be fine. >>> >> >>> >>> It is more complicated >>> >>> than necessary as a Time Track alternative, and it is slow. >>> >>> >>> >>> Having looked at the Turntable Warp plug-in, the basic idea looks >>> >>> pretty good, and it is quite fast (MUCH faster than Sliding Time >>> >>> Scale), but the code is very buggy. Getting it right is quite >>> >>> tricky, >>> >>> but I'm confident that I can do that if it is worth the effort. >>> >>> >>> >>> In terms of sound quality, there is very noticeable aliasing when >>> >>> processing generated tones, but for real-world recorded sounds the >>> >>> quality is pretty good. >>> >>> >>> >>> Q. How much effort is it worth to make an accessible "sliding speed" >>> >>> effect? >>> >> >>> >> >>> >> If the time tracks were accessible for keyboard users, would an >>> >> envelope >>> >> point at the start and end of the track do what the user wants? >>> > >>> > If time tracks were accessible, I guess that would be the perfect >>> > solution. >>> > I think it would also be required that envelope points can be added, >>> > removed and navigated, so that, for example, you can make the final 3 >>> > seconds of a track slow down. >>> > >>> >> If so, then there may be an argument that any available development >>> >> time >>> >> would be better spent working towards making the timeline keyboard >>> >> accessible. >>> > >>> > A Nyquist plug-in is more likely to happen sooner. >>> > I doubt that we will get accessible time line in Audacity 2.2.0, >>> > though perhaps a good project for 2.2.1? >>> > >>> >> >>> >>> Q. If available, would we want to ship it? >>> >>> Q. The OP envisaged quite a simple interface with just two controls >>> >>> - >>> >>> start speed and end speed. That sounds good to me - how's that from >>> >>> an >>> >>> accessibility point of view? >>> >> >>> >> >>> >> I can't see any problem with that, >>> > >>> > Thanks for your comments David. I'm encouraged to make this plug-in as >>> > I think it will at least be a useful stop-gap until time tracks are >>> > made accessible. >>> > >>> > Whether we ship it, or just have it on the wiki can be decided after >>> > testing. >>> > >>> > Steve >>> > >>> >> >>> >> David. >>> >>> >>> >>> >>> >>> Steve >>> >> >>> >> >> >> >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Audacity-quality mailing list >> Aud...@li... >> https://lists.sourceforge.net/lists/listinfo/audacity-quality >> > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Audacity-quality mailing list > Aud...@li... > https://lists.sourceforge.net/lists/listinfo/audacity-quality > |