[audacity4blind] Re: Amplification versus Gain

  • From: Gale Andrews <gale@xxxxxxxxxxxxxxxx>
  • To: audacity4blind@xxxxxxxxxxxxx
  • Date: Mon, 26 Aug 2013 13:20:02 +0100

| From "Robbie" <tickleberryfun@xxxxxxxxx> 
| Mon, 26 Aug 2013 10:54:29 +0200
| Subject: Amplification versus Gain
> However, perhaps someone can help me with a problem I'm having. In a song
> I'm currently producing the Gain and Pan values are frequently reset to 0.
> I think this happens when saving the project. So if I pan a track to 0.9
> it afterwards keeps its position but the value in the Pan box is 0 again.
> This is confusing and annoying. I'd welcome any advice on this.

The gain and pan values (as read out when you open the gain or 
pan menu) are stored in the project file.

If you Tracks > Mix and Render, the pan will be applied to the  
audio data. If you could see the waveform, the quieter channel 
would be greatly reduced in height (amplitude).

Since Render has applied the pan to the data, the pan value
returns to zero. This is correct. 


> -----Original Message-----
> From: audacity4blind-bounce@xxxxxxxxxxxxx
> [mailto:audacity4blind-bounce@xxxxxxxxxxxxx] On Behalf Of Rich De Steno
> Sent: Saturday, August 24, 2013 6:06 PM
> To: audacity4blind@xxxxxxxxxxxxx
> Subject: [audacity4blind] Re: Amplification versus Gain
> My conclusion from this information on gain and amplification is that I
> should forget about using gain and exclusively use the amplification
> effect when I want to raise or lower the level of a track or section of a
> track.
> Rich De Steno
> On 8/24/2013 9:54 AM, Gale Andrews wrote:
> > | From Rich De Steno <ironrock@xxxxxxxxxxx> Sat, 24 Aug 2013 09:29:40
> > | -0400
> > | Subject: Amplification versus Gain
> >> David, just to clarify, let's say that I have a project going with
> >> four tracks, three guitars and a vocal.  Let's say that the vocal is
> >> too low and I want to bring it up in relation to the guitars.  I
> >> select the vocal track and make sure that the guitar tracks are not
> >> selected.  I then press shift-g and enter 3, for example.  Do I still
> >> need to use the "mix and render" command, which I was never aware of
> >> before this, or is pressing shift-g and entering 3 sufficient?
> > SHIFT + G and increase the gain is sufficient for listening to the
> > file and exporting it.
> >
> > The point is that the gain does not write the gain change to the audio
> > data (and if you could see the waveform, does not modify the waveform
> > height).
> >
> > The difference is that if you tried five different gain settings and
> > did Mix and Render after each settings change,  you would have written
> > a lot of extra audio data. That could lead you to run out of disk
> > space if you were short of space and had tracks that were several
> > hours long.
> >
> >
> >
> > Gale
> >
> >
> >> On 8/24/2013 8:30 AM, David Bailes wrote:
> >>> Hi Rich,
> >>> although amplification and gain do roughly the same thing, there are
> some differences.
> >>> The gain of track is applied to the whole track, and is only applied
> >>> when the track is mixed for playback or export to a file, or when
> >>> you use the mix and render command. Changing the gain, doesn't
> >>> affect the amplitude of the audio data in the track.
> >>> The amplify effect can be applied to a time range in one or more
> >>> tracks. It changes the amplitudes of the audio data in the track, and
> it ignores the gain settings of > the tracks.
> >>> If you select one or more tracks and choose mix and render on the
> >>> tracks menu, then in the resultant track, the gains of the tracks
> >>> have been taken into account, and the gain of the track is initially
> zero.
> >>> So for example, if you select a single track, set the gain to 3,
> >>> apply the mix and > render command, the gain is applied to the audio
> data in the track, and the gain is reset to zero.
> >>>    > David.
> >>>
> >>>    > ----- Original Message -----
> >>> From: Rich De Steno <ironrock@xxxxxxxxxxx>
> >>> To: audacity4blind@xxxxxxxxxxxxx
> >>> Cc:
> >>> Sent: Friday, 23 August 2013, 19:51
> >>> Subject: [audacity4blind] Amplification versus Gain
> >>>
> >>> Is there any difference between increasing the volume of a track
> >>> through the amplify selection in the Effects menu, and by pressing
> >>> shift-g for gain and entering a number?  If there is a difference,
> what is it?
> >>> Also, when I have a project of several tracks that are all
> >>> unselected, and then I record another track, select it, and check
> >>> the level of that last track in the amplify selection in the Effects
> >>> menu, it always seems to show a negative number no matter how quiet
> >>> that last track is.  Why is that?  Also, merely making this check on
> >>> the selected last track seems to make every track selected.  What is
> going on?

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