From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS6130 216.105.38.0/24 X-Spam-Status: No, score=-3.5 required=3.0 tests=AWL,BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id E627B1F453 for ; Sun, 17 Feb 2019 16:24:51 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.90_1) (envelope-from ) id 1gvPFG-0008Aw-0y; Sun, 17 Feb 2019 16:24:46 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1gvPFD-0008Ag-Qz for sox-users@lists.sourceforge.net; Sun, 17 Feb 2019 16:24:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=In-Reply-To:To:References:Date:Subject:Mime-Version :Message-Id:Content-Type:From:Sender:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=iE2NT+R3eTuXoBJI07H7uR+M6wxmVnBQ8uIzZxRbfmc=; b=dlyMSn66mC/ToKSnyvYhZrB9DR 7cgnbo+MohaAMOlTs6owXfyPsQpZYvIbn+zwdOSeuzI4ehLprlxn3z4IgTwHeGjzzINXnldHmSAcN Hwcm47HuAebuItswdV0Shrx1Zism5dsuHDSc+KeYP93S7Vdx//fpCZIDphkc4IyL+aG4=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=In-Reply-To:To:References:Date:Subject:Mime-Version:Message-Id: Content-Type:From:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=iE2NT+R3eTuXoBJI07H7uR+M6wxmVnBQ8uIzZxRbfmc=; b=ZJ+UW+tMtDupMMi3Lr0/0j6zo5 XVE7sGEvVzgJdy72P0Btde9wWzE3bP9f7ZxBsK6kKIAvxNaABvf/mgwqK3yN5EVauWc99tj64o5Pa 2teYDnkePYkx8sxR1/ntSxBMBwzZJSN0+fB65MwFs7Hi2Kc4uR42fAhfOgk7fdt1Bta4=; Received: from lb3-smtp-cloud9.xs4all.net ([194.109.24.30]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) id 1gvPF2-003fot-OB for sox-users@lists.sourceforge.net; Sun, 17 Feb 2019 16:24:40 +0000 Received: from [IPv6:2001:984:93c2:1:f04b:2a1f:7836:d397] ([IPv6:2001:984:93c2:1:f04b:2a1f:7836:d397]) by smtp-cloud9.xs4all.net with ESMTPA id vOybgEHQgI8AWvOycg975b; Sun, 17 Feb 2019 17:07:35 +0100 From: Bouke / VideoToolShed Message-Id: <1B2DE46C-7639-41FD-A0B4-C437939E2F5B@videotoolshed.com> Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) Date: Sun, 17 Feb 2019 17:07:32 +0100 References: <9E366DFE-F5AA-4AF8-9FB5-D54C67C75560@gmail.com> To: sox-users@lists.sourceforge.net In-Reply-To: <9E366DFE-F5AA-4AF8-9FB5-D54C67C75560@gmail.com> X-Mailer: Apple Mail (2.2104) X-CMAE-Envelope: MS4wfDL+h+xXjTJQCmzYfTE3QHcujb7STU2nzFf3bYqr6UZ6jRtJRfaxhCcxXi2rDaobbOMuOWtKIZb4U7IrO2tV/PnmNnPuuZNqCC5AT2diCIk9i7Gllix3 OjSep4+tSU1xK6T1LuFQW0Rl4YUTksVUzm+rT+pzchQcLLr0GIWCvKFbpgtp8IBYVLGwx5qoDbEjbmAZbxisd7YcM2L/Uetg7x3MSgcIJ32kxh0DKyxBLTXm C6v1BFUJpIN5yB68An5u61P78m2q+n5/1CkAmnEAtopQupRucrOtFXeZ+6q4sZBD X-Headers-End: 1gvPF2-003fot-OB Subject: Re: Dynamically adjust tempo based on a reference track? X-BeenThere: sox-users@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sox-users@lists.sourceforge.net Content-Type: multipart/mixed; boundary="===============7942845879628600891==" Errors-To: sox-users-bounces@lists.sourceforge.net --===============7942845879628600891== Content-Type: multipart/alternative; boundary="Apple-Mail=_762907CA-AFB3-48BE-BD74-1A691F759563" --Apple-Mail=_762907CA-AFB3-48BE-BD74-1A691F759563 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Perry! PostForum was long ago, still have fond memories! I can=E2=80=99t say anything about SOX on the matter, but I do know that = I can probably make =E2=80=98something=E2=80=99 that works for you. (Once I grasp what you are trying to do=E2=80=A6.) Let me know (offlist if you like, since I won=E2=80=99t be using SOX). Bouke www.VideoToolShed.com van Oldenbarneveltstraat 33 6512 AS Nijmegen +31 6 21817248 To send files, go here: https://videotoolshed.wetransfer.com/ > On 17 Feb 2019, at 14:53, Perry Paolantonio = wrote: >=20 > Hi, >=20 > I have a situation specific to audio recorded for motion picture = sound. There were a couple of different methods to ensure that audio = recorded on a tape deck stayed in sync with the picture recorded on the = camera. The two most common were Pilotone and Neopilot. (there are = others, but these are the most common) >=20 > Pilotone used a 50 or 60Hz tone generator in the camera. The camera = was physically tethered to the tape deck, and the tone was recorded on a = reference track. Back in the studio, the speed of the audio was resolved = to match the picture, by adjusting speed constantly on playback to get = the reference tone where it was supposed to be. Worked pretty well.=20 >=20 > Neopilot is similar, and was Nagra=E2=80=99s invention, I think. It = used a crystal-governed tone generator to make a reference track on the = tape, and the camera used a crystal governed motor at the same = frequency. This worked really well, since both machines were running at = fixed speeds. In fact, you no longer need a nagra to do this, you can = use any digital recorder and sync is dead-on. >=20 > Anyway, I=E2=80=99m looking for a way to take a recorded reference = track and adjust its speed and the speed of the main track to conform to = the nominal referece frequency throughout, while taking the audio along = for the ride. In theory, this would allow us to capture the audio from = any reasonable tape deck that can play back the tracks separately, = without having to deal specifically with (harder and harder to find) = studio decks such as the Nagra T, which can do this out of the box.=20 >=20 > Is this possible in Sox? If so, how would one go about it?=20 >=20 > Thanks! >=20 > -perry >=20 > _______________________________________________ > Sox-users mailing list > Sox-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sox-users --Apple-Mail=_762907CA-AFB3-48BE-BD74-1A691F759563 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi Perry!
PostForum was long ago, still have = fond memories!

I= can=E2=80=99t say anything about SOX on the matter, but I do know that = I can probably make =E2=80=98something=E2=80=99 that works for = you.
(Once I grasp what you are trying to = do=E2=80=A6.)

Let me know (offlist if you like, since I won=E2=80=99t be = using SOX).


Bouke

www.VideoToolShed.com
van = Oldenbarneveltstraat 33
6512 AS  Nijmegen
+31 6 21817248
To send files, go here:
https://videotoolshed.wetransfer.com/


On 17 Feb 2019, at 14:53, Perry Paolantonio <friolator@gmail.com>= wrote:

Hi,

I have a situation specific = to audio recorded for motion picture sound. There were a couple of = different methods to ensure that audio recorded on a tape deck stayed in = sync with the picture recorded on the camera. The two most common were = Pilotone and Neopilot. (there are others, but these are the most = common)

Pilotone used a 50 or 60Hz tone = generator in the camera. The camera was physically tethered to the tape = deck, and the tone was recorded on a reference track. Back in the = studio, the speed of the audio was resolved to match the picture, by = adjusting speed constantly on playback to get the reference tone where = it was supposed to be. Worked pretty well.

Neopilot is similar, and was Nagra=E2=80=99s invention, I = think. It used a crystal-governed tone generator to make a reference = track on the tape, and the camera used a crystal governed motor at the = same frequency. This worked really well, since both machines were = running at fixed speeds. In fact, you no longer need a nagra to do this, = you can use any digital recorder and sync is dead-on.

Anyway, I=E2=80=99m looking for a way to take a recorded = reference track and adjust its speed and the speed of the main track to = conform to the nominal referece frequency throughout, while taking the = audio along for the ride. In theory, this would allow us to capture the = audio from any reasonable tape deck that can play back the tracks = separately, without having to deal specifically with (harder and harder = to find) studio decks such as the Nagra T, which can do this out of the = box.

Is this possible in Sox? If so, how = would one go about it?

Thanks!

-perry

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Sox-users mailing list
Sox-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/sox-users

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