[audacity4blind] Re: Tasks I'd like to accomplish

  • From: Leland <audacity4blind@xxxxxxxxxxx>
  • To: "audacity4blind@xxxxxxxxxxxxx" <audacity4blind@xxxxxxxxxxxxx>
  • Date: Fri, 15 Jun 2007 00:14:25 -0500

Hi Nolan,

It's always good to make suggestions to the devlers, especially about
accessibility.  That keeps 'em on their toes and keeps 'em thinking about it
as they make changes.

Heck, just recently we've been yackin' about a small change to the selection
bar and a rather major change to the metadata editor.  In both cases, I was
surprised by the accessibility awareness of the other devlers.

Your understanding of the envelope tool is correct.  It allows you to
smoothly or abruptly adjust volumes.  Your keyboard shortcut idea is very
possible.  Would you recommend a dialog pop up allowing you to enter the
desired volume (much finer control) or just one that you press multiple
times to increase or decrease by a set amount (the usual being 3 decibels).

And you are right, there should be a way to timeshift a given selection,
but, if I'm understanding correctly, you can accomplish what you need using
cut and paste.  It's still a few steps though.

1)  Import your voice track
2)  Import your bumper track

It will be automatically selected (Jaws should say "select on" when
cursoring to it.)

3)  Cursor down to your bumper track
4)  Press HOME
5)  Press SHIFT+END (this will highlight the whole track)
6)  Press CTRL+X

Your bumper track is still there, but all of the data has been cut.  And the
cursor will be repositioned to zero.

7)  Press SPACE to start playing

Listen for the point where you want to put the bumper and press the left
bracket to move the cursor to that point.

8)  Press SPACE again to stop playing
9)  Press ENTER to select the voice track
10) Press CTRL+V to paste your bumper track at the new cursor position.

It will insert the audio into your voice track at the point you pressed the
left bracket.

If you find that control is not fine enough using the left bracket, you can
use the selection bar to be extremely precise about where the audio should
be pasted.

Interesting thought about the volume at a certain point.  I kind of thought
I saw a plugin for that already somewhere.  David, did you do something like
this before?


On 6/12/07 12:40 PM, "Nolan Darilek" <nolan@xxxxxxxxxxxxxxxx> wrote:

> Hello. Sent a message about this to the list this morning, but a look at the
> archives isn't showing it. Maybe with the increased activity here, I can find
> some answers.
> I'd like to use Audacity to (finally) get my podcast off the ground. There are
> some tasks which I don't think can be accomplished accessibly, though, and
> I've tried to learn how to write plugins, but lisp-like languages have always
> been difficult for me to wrap my brain around for some reason. I'd like to
> begin my podcast with bed music that fades out to, say, 40% of its original
> amplitude, at which point I introduce the episode, increase to full volume
> then fade out completely. I can fade to silence, but AFAIK the envelope tool
> isn't accessible and that's what I'd need.
> What, exactly, does the envelope tool allow? Is it just for adjusting volumes
> of the waveform? I wonder if it might be worth submitting accessibility
> suggestions to the Audacity developers--perhaps keyboard shortcuts for
> increasing/decreasing the volume at point of selection, but I'm not familiar
> with the tool and don't know if my view of it is greatly simplified.
> In the absence of this, how difficult would it be to write a plugin to fade
> in/out to the specified percentage of original amplitude? It would behave
> exactly as the standard "fade out/in" effects, but would perhaps have a
> percentage slider and the end result would be audio at that percent of its
> original amplitude ("original amplitude" defined as its volume independent of
> any fades.)
> I also want to timeshift bumper music/promos. In my tests I've been doing this
> by inserting silence, but the process is rather tedius. I first need to find
> the time in my voice track where I'd like to insert the bumper. Memorizing
> that time, I then have to import the desired audio into a new track, arrow to
> it, select a portion then insert silence until it has reached the specified
> length.
> Is there any way to access the timeshift tool? If not, is that functionality
> available via plugin such that, say, a "Timeshift track to current" plugin
> could present a list of tracks then shift the selected track to the position
> of the play/record head? I've also not checked whether inserting silence makes
> my project files' sizes explode or whether the format is smart enough to not
> record the silence as bytes, though even so, it would be nice knowing that a
> given bumper track is whatever its actual length is without seeing the length
> of the silence reported in that time as well.
> One final question. Is there any way of determining the volume of audio on a
> specified track at a specified point in time? Perhaps some area of the screen
> that displays this information as a track plays? Thinking that I might like to
> try writing JAWS/NVDA scripts to make Audacity more friendly in some respects
> (if others haven't already, that is) and it'd be cool to know how close my
> recordings come to clipping.
> Thanks a bunch! Hoping this list becomes more active. I really like Audacity's
> multitrack nature and have played with other programs for audio in the past
> months, but keep coming back to Audacity, wishing there were some way to get
> these features.

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