From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp014.mail.yahoo.com ([216.136.173.58]) by speech.braille.uwo.ca with smtp (Exim 3.34 #1 (Debian)) id 16r3rD-0003Dx-00 for ; Fri, 29 Mar 2002 16:24:23 -0500 Received: from h0020780ec921.ne.client2.attbi.com (HELO mycomputer) (igueths@24.62.33.0 with login) by smtp.mail.vip.sc5.yahoo.com with SMTP; 29 Mar 2002 21:24:26 -0000 Message-ID: <002a01c1d766$e9cf5680$01213e18@mycomputer> From: "Igor Gueths" To: References: <20020328221706.A246@uic.edu> <20020329195314.D32010@joana.gotss.net> <20020329145917.C836@uic.edu> Subject: Re: alsa and sox questions Date: Fri, 29 Mar 2002 16:15:53 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-Mimeole: Produced By Microsoft MimeOLE V5.00.2615.200 Sender: speakup-admin@braille.uwo.ca Errors-To: speakup-admin@braille.uwo.ca X-BeenThere: speakup@braille.uwo.ca X-Mailman-Version: 2.0.8 Precedence: bulk Reply-To: speakup@braille.uwo.ca List-Help: List-Post: List-Subscribe: , List-Id: Speakup is a screen review system for Linux. List-Unsubscribe: , List-Archive: Hi Greg. One thing you can do is make sure the mixer settings on your = card unmute line and make sure that line-in levels are up to a good = level, then turn up the sound on the tape recorder until it clips and = distorts. Then turn the volume back down slightly, and you should get a = good recording level. I used to do this when recording tapes, and it = worked great for me.=20 ----- Original Message -----=20 From: Gregory Nowak To: Sent: Friday, March 29, 2002 3:59 PM Subject: Re: alsa and sox questions > Thanks. One more question that came to me is what's the best way to = set the volume on the card line in jack, and on the tape player, so that = the sound quality is just right. The reason I'm asking this is because = my choice seems to be only to wire the line in of the card to the = headphone jack of the tape player. > Greg >=20 >=20 > On Fri, Mar 29, 2002 at 07:53:14PM +0800, Kerry Hoath wrote: > > Yes you can do channel fiddling I do this when I am copying 4-track = tapes. > > You use the pick effect to split out a channel like this: > > sox stereo.wav -c1 mono_left.wav pick -l > > sox stereo.wav -c1 mono-right.wav pick -r > > You need the -c 1 to tell sox to o nly write 1 channel to the = output. > > If you have a mono wav you _can_ duplicate the left channel like = this: > > sox mono.wav -c2 stereo.wav > > but mono plays in the center of the stereo image and you are simply = duplicating data. > > The only reason I can see for wanting to turn mon into stereo is if = you have > > some high quality mono samples you want to play on an audio cd that = wants stereo data. > > I had to do this with some mono minidiscs so they'd play on a normal = cd player without > > leaving the right channel silent or playing at the worng sample = rate. > >=20 > > Regards, Kerry. > > On Thu, Mar 28, 2002 at 10:17:06PM -0600, Gregory Nowak wrote: > > > Hi all, > > >=20 > > > I've been reading here recently that people have been installing = alsa 0.90 beta 11. Where did all of you get that from? The newest thing = on the alsa-project.org ftp site is still 0.90 beta 9. > > >=20 > > > I also have a sox question. As we know, most audio tapes are = recorded to play through both left and right speakers. I think this is = defined as left and right channels, but if this isn't correct, please = assume that it is throughout this post. Based on reading the sox man = page, I think I can do the following, but I need someone to reassure me. = > > >=20 > > > Say again that I have a standard audio tape recorded with left and = right channels. Is there a way for me to strip one of the channels from = a wave file recording of that tape using sox? What I'm asking is if I = record this tape as a wave file, can I then strip either the left or = right channels from this recording? > > >=20 > > > Alternatively, let's say that I already have a wave recording = where one of the channels has already been stripped, which leaves me = with a left channel only from the original tape. Can I use sox to mix = the data on that left channel into both a left and right channels?=20 > > >=20 > > > Please forgive the weirdness of theese questions. However, I = really do not care to elaborate why I'm asking them. Yes, it is for a = purpose, and depending on what answers I get, I may or may not do what = I'm planning, it really is a long story. Thanks for bearing with me, and = for any help in advance. > > > Greg > > >=20 > > >=20 > > > _______________________________________________ > > > Speakup mailing list > > > Speakup@braille.uwo.ca > > > http://speech.braille.uwo.ca/mailman/listinfo/speakup > > >=20 > >=20 > > --=20 > > Kerry Hoath: kerry@gotss.net kerry@gotss.eu.org or = kerry@gotss.spice.net.au > > ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au > >=20 > > _______________________________________________ > > Speakup mailing list > > Speakup@braille.uwo.ca > > http://speech.braille.uwo.ca/mailman/listinfo/speakup >=20 > _______________________________________________ > Speakup mailing list > Speakup@braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com