From: Jan Stary <hans@stare.cz>
To: sox-users@lists.sourceforge.net
Subject: Re: Combine and trim files with silence
Date: Sat, 18 Apr 2020 11:28:12 +0200 [thread overview]
Message-ID: <20200418092812.GA2613@www.stare.cz> (raw)
In-Reply-To: <2abc00c8-f19a-abbd-f197-2e31b8be6cee@gmail.com>
On Apr 17 22:11:00, jungleboogie0@gmail.com wrote:
> I'm using SoX v14.4.2 and would like help mixing three files, with silence
> in between two of them.
With silence in between, you probably mean to concatenate them,
not to "mix" them.
> Problem I want to solve:
> Mix three files with, with the longest being shorten to a specific file.
Is this unnamed specific file a fourth file,
or one of the unspecified three?
> I also want a 1.5 second pad between short_track.wav and main_file.wav
What _three_ files are those then
and in what order do you want to concatenate them?
> What I've tried:
> sox -m main_file.wav long_track.wav -p pad 1.5 0 | sox - -m short_track.wav
> -t wavpcm out.wav trim 0 0 `soxi -D main_file.wav`
Ah, so the three files are
1. short_track
2. main_file
3. long track
in that order?
Which one is "the longest"
and to which file's length do you want to shorten it?
> Problem is that the file cuts off about 1.5 seconds too quick, which is how
> long my pad is.
>
> I've also tried creating a blank file:
> sox -n -r 16000 -b 16 -c 1 silence.wav trim 0.0 1.5
>
> Then combining it:
> sox short_track.wav silence.wav main_file.wav long_track.wav out.wav trim 0
> `soxi -D main_file.wav`
This trims the length of out.wav,
not "the longest" of the three files
(whichever it is).
Is main_file the "specific file"
whose lenght you want to use to shorted "the longest"?
> But you seasoned sox experts already know this means
> log_track.wav isn't used at all.
Of course: out.wav gets trimmed before the input even gets to it,
being that main_file itself is one of the inputs.
> This also cuts off about the last 1.5 seconds of the out.wav
> file as well.
It trims out.wav to the length of main_file.
> So is it possible to combine these files and trim to the main file?
Trim _what_ to to length of the main file?
In short, you mail is a mess. Tell us what you you need to do _and_why_.
Be as specific as possible. Don't talk about "the longest file" without
showing the lengths, or "a specific file" without naming it, etc.
Trimming a file to another file's length is easy:
sox third.wav trimmed.wav trim 0 `soxi -D prototype.wav`
soxi -D prototype.wav third.wav trimmed.wav
To concatenating three files, with silence between (say) first and second,
just pad the first with silence first:
sox first.wav padded.wav pad 0 1.5
soxi -D first.wav padded.wav
Then just contatenate them:
sox padded.wav second.wav trimmed.wav out.wav
soxi -D padded.wav second.wav trimmed.wav out.wav
rm -rf padded.wav trimmed.wav
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next prev parent reply other threads:[~2020-04-18 9:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-18 5:11 Combine and trim files with silence jungle boogie
2020-04-18 5:49 ` Mikko Olkkonen
2020-04-18 9:28 ` Jan Stary [this message]
2020-04-19 3:29 ` jungle boogie
2020-04-27 21:41 ` Jan Stary
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