How to audio-scrub on Macbook Pro

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juniormarbles
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How to audio-scrub on Macbook Pro

Post by juniormarbles » Tue Oct 20, 2015 9:16 pm

I downloaded 2.1.1 which supposedly allows audio scrubbing (like I used to do by moving the tape recorder reels back and forth over the playback head). Following Audacity's instructions (Selection tool "I" plus left-click control) I get nothing. I assume 'left click' on a Mac trackpad means 'control'' + pressing down on the trackpad?
I'd appreciate a step by step guidance to get me to scrubbing.
Thanks,
JM
(Macbook Pro lat3 2011, OX 10..9.5)

cyrano
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Re: How to audio-scub on Macbook Pro

Post by cyrano » Wed Oct 21, 2015 11:28 am

Left click is the normal click.

Right click is CTRL + click.

waxcylinder
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Re: How to audio-scub on Macbook Pro

Post by waxcylinder » Wed Oct 21, 2015 11:51 am

The current scrubbing interface is really designed to be used with a mouse - but I just tested and it does woork with the trackpad (on Windows anyway) but my track pad has left and right click buttons

1) Move your cursor to wher in the waveform you want to scrub from
2) hold dow the modifier key - on Windows this is Ctrl - on Mac I think this is Cmd
3) tap the trackpa left-click button
4) now moving the cursor left or right of wher it currently is will cause scrubbing to start

You may find it easier using the Timeline Quick-Play - I cerainly do, I use it all the time. See this page in the Manual: http://manual.audacityteam.org/o/man/timeline.html#tqp

We are currently woking on thinking about a serious re-design of the scrubbing UI (User Interface) for a later version of Audacity as we do realize that, although the underlying engine technology is excellent, the current UI has some serious shortcomings. See: http://wiki.audacityteam.org/wiki/Propo ... _-_Phase-2

I have added a link to this Forum thread as a use case for that proposal - an example of how confusing the current UI can be.

WC
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juniormarbles
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Re: How to audio-scub on Macbook Pro

Post by juniormarbles » Thu Oct 22, 2015 11:00 pm

Thank you very much for your insights.
I have just tested Audacity scrubbing with the Macbook Pro's trackpad, as suggested, and find it not very easy or useful, because I cannot reliably repeat the scrubbing speed (to identify the flaw in the recording or find the irritating clicks I need to remove) with finger movements. The reel-to-reel-type scrubbing with analog tape machines of old made it much easier to manually hone in on the exact edit point.

Maybe there is a way to redesign scrubbing so that it would steady the scrub when used repeatedly over a section...??

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Re: How to audio-scub on Macbook Pro

Post by Gale Andrews » Fri Oct 23, 2015 12:55 am

juniormarbles wrote:I have just tested Audacity scrubbing with the Macbook Pro's trackpad, as suggested, and find it not very easy or useful, because I cannot reliably repeat the scrubbing speed (to identify the flaw in the recording or find the irritating clicks I need to remove) with finger movements.
If you had to drag the playhead or some widget to scrub play, would that be easier?

Is it easy to drag Audacity sliders (or any sliders on Mac) with the Trackpad?


Gale
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juniormarbles
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Re: How to audio-scub on Macbook Pro

Post by juniormarbles » Fri Oct 23, 2015 8:50 am

I wish I could be certain, but any of these virtual movements would need to be tested to verify that they work well in practice.
All I know is that a steady scrub, i.e. a scrub whose speed does not change, or a scrub whose speed is controllable in a fairly precise way would be great. The goal remains: scrubbing where the artifact or click to be edited can be honed in on by repetitive, confirmative movement, until certainty of the location is achieved.

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Re: How to audio-scrub on Macbook Pro

Post by Gale Andrews » Fri Oct 23, 2015 9:25 pm

juniormarbles wrote:I wish I could be certain, but any of these virtual movements would need to be tested to verify that they work well in practice.
All I know is that a steady scrub, i.e. a scrub whose speed does not change, or a scrub whose speed is controllable in a fairly precise way would be great. The goal remains: scrubbing where the artifact or click to be edited can be honed in on by repetitive, confirmative movement, until certainty of the location is achieved.
The default COMMAND + single-left-click scrub (without dragging) is steady speed (1x) . What you have to remember is that scrub play stops when the playhead reaches the pointer. If you think ahead all the time to keep the pointer moving either side of the playhead then you can scrub smoothly at 1x.

If you are determined to use a pad rather than a mouse then precise dragging may be hard, just like it may be when using Envelope Tool. This is one reason that I have been arguing we want to add a simple variable speed drag bar for intuitive scrubbing, but also retain (something like) the current scrubbing modes that don't depend on drag (but may have drag features).

But it is essential there is some button or widget to turn on scrubbing mode and essential that it is made obvious you are in that mode.


Gale
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waxcylinder
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Re: How to audio-scrub on Macbook Pro

Post by waxcylinder » Fri Oct 23, 2015 10:55 pm

Gale Andrews wrote:But it is essential there is some button or widget to turn on scrubbing mode and essential that it is made obvious you are in that mode.
+1 to that

Peter
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Paul L
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Re: How to audio-scrub on Macbook Pro

Post by Paul L » Mon Apr 18, 2016 6:51 pm

Replying to this old thread...

juniormarbles, I think you want to zoom in during a scrub to help hone in on something.

On Windows, ctrl + mouse wheel changes magnification. On Macbook, Command + double finger vertical swipe.

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Re: How to audio-scrub on Macbook Pro

Post by kozikowski » Mon Apr 18, 2016 8:55 pm

It is required that whoever is developing scrubbing be a proficient video editor. It's not optional. The video people have been doing this successfully for decades.

Anybody who tries to use Audacity after successfully using a video editing program is horrified how difficult it is. No, you shouldn't turn the function on and off. It's completely seamless. You want scrubbing (from any mode), you grab the cursor and push, either direction, any speed, full stop. No modes, conditions, Alt keys, two-finger mice, odd pointing devices, etc.

Any non-video editor developer is always going to make up complex systems and services that are convenient to program (see: forcing Labels to be Mark-In and Mark-Out). Graceful, seamless scrubbing is not easy to program. It's extraordinarily difficult to program and it would be good for the developer to have a clear, proven, legacy goal.

Koz

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