From: Mikko Olkkonen <molkko@gmail.com>
To: Sox-users@lists.sourceforge.net
Subject: remove known sample from audio
Date: Tue, 25 Sep 2018 12:26:36 +0300 [thread overview]
Message-ID: <CANWtmUC8BaCEuT5pG66xTDKHD0hEE6+svTsUjQanWh3B0p8BqQ@mail.gmail.com> (raw)
[-- Attachment #1.1: Type: text/plain, Size: 1189 bytes --]
Hello,
What is the best way to subtract a known sample from given audio i.e.
extract/reconstruct the original.wav from final.wav when final.wav has been
created with commands:
sox knownsample.wav knownsample_delay_gain.wav pad <X> 0 vol <Y>
sox -m original.wav knownsample_delay_gain.wav final.wav
original.wav is not anymore available. knownsample.wav and final.wav are
available. pad delay and the vol parameter are known _roughly_ (X =~10ms,
Y=~0.1)
regards, Mikk00
PS1, I can reconstruct the original with the process below but this method
is very cumbersome:
repeat {
come up with some guessed X and Y
sox knownsample.wav knownsample_delay_gain.wav pad <X> 0 vol -<Y> // is
also inverted
sox -m -v 1 original.wav -v 1 knownsample_delay_gain.wav final.wav stat
} until RMS amplitude reported by stat has reached local minimum
I am after more streamlined way to remove known sample from given audio.
PS2, The original problem is a two musical instruments recorded
simultaneously in the same space. They have their own mics but the other
instrument is audible in each recording. I want to remove the "wrong
instrument" from each recording and have clean audio for both instruments.
[-- Attachment #1.2: Type: text/html, Size: 1635 bytes --]
[-- Attachment #2: Type: text/plain, Size: 0 bytes --]
[-- Attachment #3: Type: text/plain, Size: 158 bytes --]
_______________________________________________
Sox-users mailing list
Sox-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/sox-users
next reply other threads:[~2018-09-25 9:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-25 9:26 Mikko Olkkonen [this message]
2018-09-25 19:42 ` remove known sample from audio Jan Stary
2018-09-26 13:49 ` Mikko Olkkonen
2018-09-26 18:16 ` Jan Stary
2018-09-26 18:35 ` Jan Stary
2018-09-27 6:24 ` Mikko Olkkonen
2018-09-27 9:48 ` Jan Stary
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.sourceforge.net/lists/listinfo/sox-users
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CANWtmUC8BaCEuT5pG66xTDKHD0hEE6+svTsUjQanWh3B0p8BqQ@mail.gmail.com \
--to=sox-users@lists.sourceforge.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/sox.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).