Trim from end, and add fade, batch export

Audacity 3 Help Forum macOS
1

Hey there!

I need to take 300 audio files, remove 4/5 seconds from the end (a lot have silence at the end), and then add a 4/5 second fade, and then export - as a batch macros, any ideas? Would be really appreciative!

Thanks!

2

There’s a plug-in available for trimming silence from the end of a track: https://wiki.audacityteam.org/wiki/Nyquist_Effect_Plug-ins#Trim_Silence
The plug-in can be used in a macro.
For the fade-out, you could make a slightly modified version of the “Fade Ends” macro that is included in Audacity.

3

Thanks the trim worked a treat!!, i just dont know how to fade out 5 seconds from the end?

4

See steps 3 and for in the “Fade Ends” macro.
(You will need to increase “End=1” to “End=5”)

Don’t forget to put one of the Export commands at the end of the macro so that it will export the results of the batch processing.

5

Thanks so much! This is working great! I have 2 processes now,

  1. Trim
    TrimExtend:end-adjust=“-5” error-control=“Show errors” start-adjust=“0” t-units=“seconds”
    FadeOut:Use_Preset=“”
    Select:End=“1” RelativeTo=“SelectionEnd” Start=“0”
    ExportWav:

  2. Then Fade
    Select:Start=“0” End=“1”
    FadeIn:Use_Preset=“”
    Select:End=“5” RelativeTo=“ProjectEnd” Start=“0”
    FadeOut:Use_Preset=“”
    Select:Start=“0” End=“0”
    ExportWav:


    I got over confident snd tried to combine both into one, but it didnt work, any ideas?
    TrimExtend:end-adjust=“-5” error-control=“Show errors” start-adjust=“0” t-units=“seconds”
    FadeOut:Use_Preset=“”
    Select:End=“1” RelativeTo=“SelectionEnd” Start=“0”
    Select:Start=“0” End=“1”
    FadeIn:Use_Preset=“”
    Select:End=“5” RelativeTo=“ProjectEnd” Start=“0”
    FadeOut:Use_Preset=“”
    Select:Start=“0” End=“0”
    ExportWav:

TIA really, i owe you!!

6

It looks like you got very close.
I don’t have the plug-in installed at the moment so I’ll need to install that first. I’ll get back to you shortly.

7

Try this:

TrimSilence:min-end-silence="0" min-start-silence="30" threshold="-48"
Select:End="5" RelativeTo="ProjectEnd" Start="0"
FadeOut:Use_Preset="<Current Settings>"
ExportWav:

Note: I’ve set min-start-silence=“30” so that leading silence is NOT trimmed (assuming leading silence of less than 30 seconds). You can change that if you want to trim leading silence.

8

I’ve just noticed that you are using the “Trim / Extend” plug-in rather than the “Trim Silence” plug-in.
I recommended the latter as it does trimming, but “Trim / Extend” should also work provided that you use the correct settings (I’ve not tested as I installed the other one).

9

Thanks so much! Really appreciate your help!!