Re: [SoX-users] acoustic-marks in audio-file

[Fmiser <fm...@gm...>]

> Ulrich Klauer wrote:

> "Rainer M. Engel" <en...@en...>:
> 
> > I want to create a soundfile in which I hear at certain time
> > positions a very short peep-sound. This file should be mixed
> > over the audio track of a movie to mark some positions in an
> > acoustic manner.
> >
> > Layout:
> > |-silent----------------|peep|-silent------------| ....
> >  mixed with..
> > |-original-audio---------------------------------| ....
> >
> >
> > What would be the best way to achieve this?
> >
> > Given is a wav-file 48KHz Stereo of ~2hours length and there
> > would be a few or several hundred peep marks to make.
> 
> The mixing can be done with
>    sox -M input.wav beeps-and-silence.wav output.wav remix -m
> 1,3 2,3
> 
> The easiest way to place the beeps is probably to replicate
> them into as many channels as you'll need beeps, then move
> them with "delay", like this:
>    sox beep.wav beeps-and-silence.wav remix 1 1 1 1 1 1 1 ...
> 1 delay 2:17 3:51 47:11 ... 1:58:22 remix -m -

What about making a silence+peep-at-the-end file that has
exactly the correct amount of silence.  Then copy this
end-to-end to make a track that is more than plenty long.  This
could even be saved for future use.  Then mix it with the
soundtrack.

Or is it possible to do this within Sox?  Mix sountrack.wav and
silence+peep.wav, repeating silence+peep.wav end-to-end?

--   Philip