gmane.comp.audio.audacity.devel

Cancelling Timer Record recording

Gale Andrews — 2012-05-25T04:54:14

Because we treat cancelling an in-progress Timer Record as an 
"Undo Record" (not unreasonable on the face of it), this then 
means that if you: 

1 Start a Timer Record   
2 Cancel the Timer Record while recording
3 Start a new recording (or do anything else)

then the original recording is lost.

This arises from a recent Forum post where someone started Timer
Record, wanted to extend the timer to record for longer (can't be 
done), panicked, cancelled Timer Record, then started a new 
recording. 

I've previously wondered if cancelling Timer Record should leave
an Undo History item. This is a good reason why it should, but it
doesn't help a user who cancels then re-records, or knows they 
want the "Stop" button but hits the wrong one. They are then 
sunk unless they use Edit > Undo before anything else.    

Can we do anything here in recognition that recordings can be 
irreplaceable? Possibilities: 

* Remove the "Cancel" button from "Audacity Timer Record 
   Progress" - they have to remove the track if they don't 
   want it.
* Treat cancelling Timer Record as separate "Record" and
   "Remove Track" actions -  then (I think) user is safe as 
   long as they don't undo back to the start then record. 
   Potentially messy for the code? 

Any other ideas? 





Gale 
    

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[PATCH] FFmpeg on-demand based input

Michael Chinen — 2012-05-23T07:07:19

Hi,
Here is a set of patches that allows ffmpeg on demand importing,
updated for the new ffmpeg versions.
Since this is a sizable new feature I am attaching the patches.
I will commit as 10 modular commits (patches included), but for
testing convenience I am also attaching a combined patch that squashes
all 10.

I tested and debugged for a while. I don't think it's polished yet,
but since the user can switch it on and off, it is lower risk if I get
the OK to commit.

It enables EXPERIMENTAL_OD_FFMPEG, but the default functionality is
the non-OD import, which is selectable via the Library preference pane
in the ffmpeg section.
It also refactors the relevant code from the non OD method.
There are no large system/structural changes that would affect other
parts of the code.

I am not sure if seeking should be enabled or not since ffmpeg is not
always that accurate at seeking.
I expected to find more problems with it, but after these fixes in my
basic test cases it does the correct thing with my system ffmpeg. For
testing the patch, I will leave it in.
If we decide to disable it, this will simply become background linear
loading with no on-demand updates, which is still useful.
I tested on linux and mac on flv, wav, mp3 (vbr, cbr), m4a (aac), mpeg
video (audio track).

Michael
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2.0.1?

Gale (Audacity Team — 2012-05-21T21:13:28

If we would like a 2.0.1 mid to end June (so still roughly three months after
2.0.0)
we ought to start thinking about it.

Have we got enough "new things" in it? 

Support for VoiceOver on Mac (already committed) will be a big plus for VI
users,
though David has recently asked for more testing:
http://www.freelists.org/post/audacity4blind/Audacity-20-build-for-Mac,14 . 

The (limited) Effects shortcut functionality would surely be popular but is 
still Windows only, and removing an effect doesn't remove its shortcut,
which gets assigned to another plug-in.

What are the issues with implementing effects shortcuts on the other
platforms?  
As it is now, an embarrassing glitch can be found on Linux and Mac if you 
default the shortcuts:
http://audacity.238276.n2.nabble.com/Ctrl-R-AWOL-on-Linux-td7528376.html .

In sum, I'm not sure effects shortcuts are ready for release at the moment. 

If effects shortcuts are not released this time around, Nyquist Effects in
chains 
could be a nice "new thing for everyone" that as far as I know is fairly
well tested 
already:
http://audacity.238276.n2.nabble.com/Can-this-be-committed-td7551739.html .

I'm hoping not too much effort would be needed to get at least one of those 
two new features polished to releasability (and may be a couple of P2's 
vanquished -  http://tinyurl.com/cfc7hz5 ) by the end of June? 



Gale 


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View this message in context: http://audacity.238276.n2.nabble.com/2-0-1-tp7555245.html
Sent from the audacity-devel mailing list archive at Nabble.com.

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working round bug 152

Steve the Fiddle — 2012-05-21T13:42:31

I have a Nyquist plug-in that is tested and waiting to be uploaded to
the wiki. http://forum.audacityteam.org/viewtopic.php?f=42&t=65557
Unfortunately it is affected by bug 152.

I have written an update to the plug-in that works around bug 152.
I have also submitted a patch for bug 152 (tested on Linux, XP and Win
7 - should be platform independent)
http://bugzilla.audacityteam.org/show_bug.cgi?id=152

If the patch is applied then there is no need for the workaround in the plug-in.
Should I upload the plug-in that has the workaround, or wait for bug
152 to be closed?

The workaround in the plug-in replaces the functions nyq:highpass2 and
nyq:lowpass2 that are currently used in Audacity Nyquist with patched
local versions. If these functions are ever updated in Audacity then
the plug-in will still use the old patched version, so I think that it
would be better to upload the version without the workaround, but then
it will need to specify Audacity version 2.1 (or whatever version
fixes these two functions).

Is there a policy about this? Can anyone advise?

Steve

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Noise coring filter

Jérôme M. Berger — 2012-05-17T08:04:19

Hi,

Now that version 2 is out and feature freeze is over, may I
resubmit my noise coring filter:
https://bitbucket.org/jmb/audacity-patches/src/tip/noise-coring.patch

Here are some examples of the results here ("Bruts" are the
originals, "Filtre" are filtered):
http://jeberger.free.fr/public/110911-BenedictionOrgue-mp3/

Jerome

Email glitches

Vaughan Johnson — 2012-05-12T13:42:34

I switched ISP a few weeks ago. Doing so made it easier to switch to fully hosted vaughan< at >audacityteam.org, so I did that about a week ago. For about an hour I failsafed it via forwards to my gmail account. Somehow that messed up Dreamhost such that it kept forwarding some, didn't send some to the fully hosted pop3, apparently completely lost some (both from and to the fully hosted).

I think it's fixed now but if you were expecting a response from me, please retransmit. 

- Vaughan
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Patch for bug 50 – calculation of remaining space for 24-bit recording

Miroslav Matějů — 2012-05-12T11:13:06

Hello there,
I am sending a patch for the bug 50 in Bugzilla (http://bugzilla.audacityteam.org/show_bug.cgi?id=50). It corrects the remaining recording time available when using 24-bit samples.
* The remaining time calculation was incorrect because there are 32-bit float samples recorded when 24-bit samples selected, and then only 24-bit samples saved. (A one-minute-long test file takes 5 MB for 16-bit samples, 7.5 MB for 24-bit and 10 MB for 32-bit samples.)
* The variable captureFormat is converted by the following code, so the time calculation was not able to see the actual size of samples on disk.
   // Special case: Our 24-bit sample format is different from PortAudio's
   // 3-byte packed format. So just make PortAudio return float samples,
   // since we need float values anyway to apply the gain.
   if (captureFormat == int24Sample)
      captureFormat = floatSample;

* I created a new variable mSaveFormat which keeps the original captureFormat and it is passed to time calculator using the new function GetSaveFormat(). I could probably use a boolean to share only the information that the sizes are different… However, this way looks more systematic to me and we can surely use one more int per recording in the time of gigabytes of RAM.

I hope this helps a little for a better Audacity.

Best regards,
Melebius (Miroslav Matějů)


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Can this be committed ?

Steve the Fiddle — 2012-05-11T20:02:59

A proposal page was created on the wiki last July for adding Nyquist
support in Chains.
There are many compelling reasons why this would be a major
enhancement for Audacity.
Even better, there is already a patch that provides this functionality
and it has been tested on Windows Linux and Mac.

http://wiki.audacityteam.org/wiki/Proposal_Nyquist_process_effects_in_Chains

Sadly this enhancement went into a coma on September 11th 2011 and has
not moved since.
Would anyone be interested in reviving it?

Steve

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Patch: fix for incorrect RIFF WAVE headers whenexporting to external program

Taihei Monma — 2012-05-07T15:55:09

Hi folks,

When exporting to external programs, Audacity generates a wave file including incorrect header values. Here is a patch to fix the problem.

Regards,
Taihei

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make error on Linux Ubuntu 10.10

Gale Andrews — 2012-05-06T08:41:24

Hi,

Doing default  ./configure of HEAD on Ubuntu 10.10 I get:


blockfile/ODPCMAliasBlockFile.cpp -o blockfile/ODPCMAliasBlockFile.o
blockfile/ODPCMAliasBlockFile.cpp: In member function 'virtual void* ODPCMAliasBlockFile::CalcSummary(char*, sampleCount, sampleFormat)':
blockfile/ODPCMAliasBlockFile.cpp:523: error: 'FLT_MAX' was not declared in this scope
make[1]: *** [blockfile/ODPCMAliasBlockFile.o] Error 1

which happened after r11731 as far as I am aware. 


Thanks


Gale  


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Can't zoom in on end of selection with Ctrl+MouseWheel (svn reviion 11726)

Steve the Fiddle — 2012-05-04T19:30:52

Generate a 30 second tone.
Select from (say) 5 seconds to 20 seconds.
Ctrl+Mouse Wheel to zoom in on the end of the selection.

Audacity zooms in on the centre of the selection, not on the pointer position.
(for me this is definitely a P1)

Steve

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Ctrl+R AWOL on Linux

Steve the Fiddle — 2012-05-04T19:20:08

Ctrl+R (repeat last effect) is missing in the current svn build.

Edit > Preferences > Keyboard > Effect
"Repeat Amplify: <blank>"

Click on "Defaults" button:
"Repeat Amplify: Shift+O"

(that's wrong, Shift+O is the shortcut for "Change Input Device")

Enter Ctrl+R and press "Set"
Error message:

"The keyboard shortcut 'Ctrl+R' is already assigned to:
'RepeatLastEffect' [OK]"

Steve

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Frequent feedback< at > issues.

James Crook — 2012-05-03T09:29:08

Lurking on the feedback lists a couple of things I see repeatedly that 
we could improve on:


1) People getting caught out by accidentally enabling snap-to.
My proposed mitigation of this is that if you zoom in to sample level 
snap-to unticks.  This is (probably) one of the first things people do 
when they find they can't select precisely, so I expect it to cut down 
the baffled users a lot.  If we get push back from power users who are 
using snap to and zooming in too, I don't think we will as I expect that 
to be rare and it is easy to re-tick, we can consider something more 
elaborate at that time.

2) People looking at the 'errors' in the log and thinking they are 
relevant to their problem.
Many of the things being reported as 'errors' do not need reporting at 
all, and if they are reported, could just be points of information.  
There is way too much in that log.


Comments welcome.


--James.

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Further problem, obvious in Normalize

Martyn Shaw — 2012-05-02T00:38:18

Hi

If you have an offset signal, such as created by Steve's Nyquist 
command (sum 0.4 (mult 0.25 (osc 60))) applied to a 30s track
and then split the resulting signal somewhere, and move the right-hand 
bit further right to make the track about twice as long, Normalize 
(with the patch on Bugzilla 495, and probably without that) will 
calculate the 'space' as having samples of value zero.  So when it 
calculates the 'average' (dc) it will only be half as much as it 
'should' be, and so not apply the 'correct' offset.

This is not related to bug 495, I just happened across it whilst 
testing on that one, and thought I should record it.

Of course the chances of anyone (using a sensible work-flow) finding 
this problem are slim, but there may be people splitting and shifting 
tracks and then deciding to get rid of the dc.  I think it's a 
WONTFIX, what about you?

TTFN
Martyn

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hw accelerated audio

Ivano Arrighetta — 2012-04-30T11:02:01

please forgive me if this is a bit ot, but is there anything on a soundcard like a GPU's video memory analog for audio?

Inviato da iPhone

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revision 11703 build failure

Steve the Fiddle — 2012-04-22T19:36:30

"make" fails on Ubuntu 11.10 with the following error:

make[1]: *** No rule to make target `effects/SpikeCleaner.cpp', needed
by `effects/SpikeCleaner.o'. Stop.
make[1]: Leaving directory `/home/steve/audacity-read-only/src'
make: *** [audacity] Error 2

Steve

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change waveform background

Kliment — 2012-04-19T11:17:56

Hi,
I plan to build 2.0 from source on Ubuntu 11.04

Can someone suggest what do I need to change in source code so that 
I get black background for waveform/spectrogram view?

Current 1.3.14 color for background is #C0C0C0. I searched the 
source but no trace of it. Maybe I could also make some changes to 
local gtkrc as alternative approach?


TIA


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Download rate

Martyn Shaw — 2012-04-18T23:30:52

Hi

I don't know if anybody has every kept download stats for any 
releases, but I have been looking at the downloads of 2.0.0 at about 
the same time of day, when I remember, and putting the numbers in a 
spreadsheet.  I expected the total to go up rapidly, then slow down 
but so far for 2.0.0 it hasn't gone down, after the first few days 
(see attachment).

Googling, there are maybe 1-2 billion (1-2 x 10^9) active PCs in use 
in the world (I assume this means Mac and *nix as well as win).  Or 
maybe less.  Let's call it 500 million - 1 billion, say 750 million.

I am assuming that so far each download has hit 1 PC and stuck.

We have had 2.2 x 10^6 downloads off Google, probably a few more from 
elsewhere.

So that's 0.3% of all PCs in the world.  If we assume that only 1 in 
100 of people with a PC actually want an app such as ours, then 29% of 
them have got it already, which is an amazing (but slightly 
unbelievable) statistic.  And that would probably mean that downloads 
should be slowing down, as it takes time for word to spread, people to 
get around to it, nerves to go away etc..

So I guess one or more of the numbers/assumptions above are incorrect. 
  Maybe there are more % of people wanting Audacity than I think? 
Maybe people download multiple times?  Do you have any explanation? 
Or have I just got my calculations wrong?

TTFN
Martyn
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recent commit

Martyn Shaw — 2012-04-16T23:31:16

Clayton

A missing file or two?  I have them here (from a previous patch) but 
they need to be in the SVN.

HTH
Martyn

1>------ Build started: Project: sbsms, Configuration: Unicode Debug 
Win32 ------
1>Compiling...
1>cl : Command line warning D9035 : option 'Wp64' has been deprecated 
and will be removed in a future release
...
1>dBTable.cpp
1>c1xx : fatal error C1083: Cannot open source file: 
'..\..\..\lib-src\sbsms\src\dBTable.cpp': No such file or directory
1>fft.cpp
...
1>grain.cpp
1>resample.cpp
1>sbsms.cpp
1>slide.cpp
1>c1xx : fatal error C1083: Cannot open source file: 
'..\..\..\lib-src\sbsms\src\slide.cpp': No such file or directory
1>sms.cpp
1>c:\audacity\audacity-cs\lib-src\sbsms\src\sms.cpp(4) : fatal error 
C1083: Cannot open include file: 'dBTable.h': No such file or directory
1>subband.cpp
1>track.cpp
1>c:\audacity\audacity-cs\lib-src\sbsms\src\track.cpp(3) : fatal error 
C1083: Cannot open include file: 'dBTable.h': No such file or directory
1>trackpoint.cpp
1>buffer.cpp
1>Generating Code...
1>Build log was saved at 
"file://c:\Audacity\audacity-CS\win\Projects\sbsms\Unicode 
Debug\BuildLog.htm"
1>sbsms - 4 error(s), 1 warning(s)
...
5>Linking...
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
long __thiscall _sbsms_::SBSMS::read(class _sbsms_::SBSMSInterface 
*,float (*)[2],long)" 
(?read< at >SBSMS< at >_sbsms_< at >< at >QAEJPAVSBSMSInterface< at >2< at >PAY01MJ< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::Slide::~Slide(void)" (??1Slide< at >_sbsms_< at >< at >QAE< at >XZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
long __thiscall _sbsms_::SBSMSQuality::getMaxPresamples(void)" 
(?getMaxPresamples< at >SBSMSQuality< at >_sbsms_< at >< at >QAEJXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
long __thiscall _sbsms_::SBSMS::getInputFrameSize(void)" 
(?getInputFrameSize< at >SBSMS< at >_sbsms_< at >< at >QAEJXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::SBSMS::SBSMS(int,class _sbsms_::SBSMSQuality 
*,bool)" (??0SBSMS< at >_sbsms_< at >< at >QAE< at >HPAVSBSMSQuality< at >1< at >_N< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::Resampler::Resampler(long (__cdecl*)(void *,struct 
_sbsms_::SBSMSFrame *),void *,enum _sbsms_::SlideType)" 
(??0Resampler< at >_sbsms_< at >< at >QAE< at >P6AJPAXPAUSBSMSFrame< at >1< at >< at >Z0W4SlideType< at >1< at >< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::SBSMSQuality::SBSMSQuality(struct 
_sbsms_::SBSMSQualityParams const *)" 
(??0SBSMSQuality< at >_sbsms_< at >< at >QAE< at >PBUSBSMSQualityParams< at >1< at >< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "struct 
_sbsms_::SBSMSQualityParams const _sbsms_::SBSMSQualityStandard" 
(?SBSMSQualityStandard< at >_sbsms_< at >< at >3USBSMSQualityParams< at >1< at >B)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::SBSMSInterfaceSliding::SBSMSInterfaceSliding(class 
_sbsms_::Slide *,class _sbsms_::Slide *,bool,__int64 const 
&,long,class _sbsms_::SBSMSQuality *)" 
(??0SBSMSInterfaceSliding< at >_sbsms_< at >< at >QAE< at >PAVSlide< at >1< at >0_NAB_JJPAVSBSMSQuality< at >1< at >< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
float __thiscall _sbsms_::Slide::getTotalStretch(void)" 
(?getTotalStretch< at >Slide< at >_sbsms_< at >< at >QAEMXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::Slide::Slide(enum 
_sbsms_::SlideType,float,float,__int64 const &)" 
(??0Slide< at >_sbsms_< at >< at >QAE< at >W4SlideType< at >1< at >MMAB_J< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
__thiscall _sbsms_::SBSMS::~SBSMS(void)" (??1SBSMS< at >_sbsms_< at >< at >QAE< at >XZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual float __thiscall 
_sbsms_::SBSMSInterfaceSliding::getStretch(float)" 
(?getStretch< at >SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAEMM< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual float __thiscall 
_sbsms_::SBSMSInterfaceSliding::getPitch(float)" 
(?getPitch< at >SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAEMM< at >Z)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual long __thiscall 
_sbsms_::SBSMSInterfaceSliding::getPresamples(void)" 
(?getPresamples< at >SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAEJXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual __int64 __thiscall 
_sbsms_::SBSMSInterfaceSliding::getSamplesToInput(void)" 
(?getSamplesToInput< at >SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAE_JXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual __int64 __thiscall 
_sbsms_::SBSMSInterfaceSliding::getSamplesToOutput(void)" 
(?getSamplesToOutput< at >SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAE_JXZ)
5>SBSMSEffect.obj : error LNK2001: unresolved external symbol "public: 
virtual __thiscall 
_sbsms_::SBSMSInterfaceSliding::~SBSMSInterfaceSliding(void)" 
(??1SBSMSInterfaceSliding< at >_sbsms_< at >< at >UAE< at >XZ)
5>C:\Audacity\audacity-CS\win\Unicode Debug\Audacity.exe : fatal error 
LNK1120: 18 unresolved externals
5>Build log was saved at 
"file://c:\Audacity\audacity-CS\win\Projects\Audacity\Unicode 
Debug\BuildLog.htm"
5>Audacity - 19 error(s), 0 warning(s)
========== Build: 0 succeeded, 2 failed, 20 up-to-date, 3 skipped 
==========

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Patch: Spectrum analysis Y-axis limit tweak

Stephan Grossklass — 2012-04-10T15:37:46

Hello folks,


it's been a while since I last posted here. Not only do I not
need to use Windows 2000 any more since I got a brand spanking
4-year-old computer with Vista, I also finally figured out how 
to tackle the Y-axis lower limit in the spectrum analyzer 
window that had been annoying me for, like, ages. A patch is 
attached - it's essentially a 3-liner.

I originally had a more complex version that took current FFT 
window size into account, but considered this to be too 
non-obvious and thus potentially confusing to the user. This 
patch uses the FFT gain expected for the maximum window size of 
16384. (It would be nice if it could fetch maximum window size
automatically in case that one changes in the future, but this 
seems non-trivial.)

Minimum Y-axis limits now are:
36 dB: -90 dB (same as b4)
48 dB: -90 dB (same as b4)
60 dB: -102 dB (ex -60 dB)
...
145 dB: -187 dB (ex -145 dB)
These are a lot less likely to bother anyone while keeping the 
spirit of the original code.

Displayed values also stay a minimum of 0.5 dB above the X-axis 
now, which improves visibility at low window sizes.

And no, don't ask me why int dBRange is treated like a float 
with the expected automatic extra type casts. I figured whoever 
decided to do it like that probably had a good reason. (I'm an 
analog/RF guy and not exactly a programming natural, you see.)

Setting up the build environment was fairly smooth sailing 
this time, except I couldn't for my life get the Windows SDK 
v7.1 installed. This one doesn't include any compilers for 
VS2008 either. So I got the v7 Windows SDK and June 2010 
DirectX SDK, which took a while to download but installed fine.
No idea how others' experience with this has been, but it might 
be something to mention in the build notes.

Stephan------------------------------------------------------------------------------
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audacity.pot

James Crook — 2012-04-06T11:21:05

I'd like us to keep a copy of the Audacity translation template file 
audacity.pot somewhere in SVN.

This will be handy in three ways:

1: For translators it gives a place to get an up dated template file.
2: It makes it easier for us to track changes in 
strings-to-be-translated and their hints (using SVN and diff).
3: It's handy for people working on the manual, as it's an indicator of 
where there have been interface changes.

I suspect trunk/locale is the right place - but I want to check whether 
there is a reason not to put it there.

--James.

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