[audacity4blind] Re: amplitude and time line
- From: Gale Andrews <gale@xxxxxxxxxxxxxxxx>
- To: audacity4blind@xxxxxxxxxxxxx
- Date: Fri, 22 Nov 2013 00:52:30 GMT
| From Steve the Fiddle <stevethefiddle@xxxxxxxxx>
| Wed, 20 Nov 2013 23:06:40 +0000
| Subject: amplitude and time line
> As there has been no feedback, I'm wondering if perhaps the plug-in is
> not useful, or if you were not able to download it, or not able to
> install it, or just couldn't be bothered to reply. If it needs some
> changes to be useful then I'm happy to modify it, but without some
> feedback I've no way of knowing what, if anything, needs to be
> changed.
>
> I'm guessing that the "Amplify Effect" work-around was sufficient for
> the task and that a separate Analyze tool is unnecessary. If that's
> the case, could someone let me know and I'll not bother uploading it
> to the wiki.
Steve,
My 2p is to upload it anyway because it may be useful in that it
shows linear (which is the default vertical scale), but Amplify
only shows dB.
Would it be useful to combine it with Peak Finder and offer choice
of Label, Message box or both? Or make a more full featured
Peak Finder (label all peaks above n dB for example)?
PS if Peak Finder stays as is, it may be an idea to document at
http://wiki.audacityteam.org/wiki/Nyquist_Analyze_Plug-ins#Peak_Finder
what the "Minimum distance" is - is it only applicable when choosing
"all equally loud peaks"?
Gale
> On 7 November 2013 15:35, Steve the Fiddle <stevethefiddle@xxxxxxxxx> wrote:
> > Hi all,
> > This question seems to be quite regularly, so I've written a plug-in
> > to address the issue.
> > It is a simple "Analyze" plug-in which, when installed, appears as
> > "Amplitude..." in the "Analyze" menu.
> >
> > The plug-in, with full instructions for installation and usage, is
> > available on the Audacity help forum here:
> > http://forum.audacityteam.org/viewtopic.php?p=227943#p227943
> >
> > Please let me know if you find this useful, or if you have any
> > problems with it, or if you think it could be modified to be more
> > useful.
> >
> > There is also a plug-in available on the wiki called "Peak Finder"
> > that will create a label at the point where the highest peak is found.
> > The label text shows the peak level in dB. This plug-in is supposed to
> > be able to produce labels for multiple peaks if there is more than one
> > at the maximum level, but in practice this rarely occurs, unless the
> > audio is clipped at 0 dB. "Peak Finder" is available here:
> > http://wiki.audacityteam.org/wiki/Nyquist_Analyze_Plug-ins#Peak_Finder
> >
> > Steve
> >
> >
> > On 7 November 2013 12:29, David Bailes <david_bailes@xxxxxxxxxxx> wrote:
> >> Hi Brad,
> >> to find the peak amplitude in a track, you can use the amplify effect
> >> dialog.
> >> 1. Select the audio in the track. (select the track, and then press j
> >> followed by shift+k).
> >> 2. Open the amplify effect on the effect menu.
> >> 3. When this opens, then the value in the amplitude (db) edit box show the
> >> amount of amplification needed so that the peak value would be maximum (0
> >> db). So if it was 15, then the peak in the track is 15db below maximum.
> >> 4. press esc to close the dialog without applying the effect.
> >>
> >> Reading the timeline:
> >> you can read the position of the cursor/selection start by pressing left
> >> bracket when there's no playback. A dialog opens which give the time.
> >> Similarly you can read the end of a selection by pressing right bracket
> >> when there's no playback.
> >>
> >> You appear to be using an old version of audacity, that is 1.3.14 alpha.
> >> Is there any reason why you're not using the current version (2.0.5)?. As
> >> far as I'm aware this should be ok on a mac.
> >>
> >> David.
> >>
> >> --------------------------------------------
> >> On Tue, 5/11/13, Brad Erhardt <brad.erhardt@xxxxxxxxx> wrote:
> >>
> >> Subject: [audacity4blind] amplitude and time line
> >> To: audacity4blind@xxxxxxxxxxxxx
> >> Date: Tuesday, 5 November, 2013, 1:33
> >>
> >> Hello all again,
> >> does anyone know if it is possible for us blinkers, :-)
> >> Visually impaired or blind people, to know the peak
> >> amplitude for an existing track. Also is there a way to read
> >> the time line. I believe Audacity shows these things
> >> visually.
> >> I am using Audacity 1.3.14
> >> alpha on a macintosh system running OS X
> >> lion.
> >> TTFN,
> >>
> >> Brad
> >> Erhardtbrad.erhardt@xxxxxxxxx
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