Return-Path: Received: from rly-dc01.mx.aol.com (rly-dc01.mail.aol.com [172.19.136.30]) by air-dc01.mail.aol.com (v125.7) with ESMTP id MAILINDC014-afe4aab99591b; Sat, 12 Sep 2009 08:52:02 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc01.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDC012-afe4aab99591b; Sat, 12 Sep 2009 08:51:39 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MmS42-00028y-TT for rs_out_1@blacksheep.org; Sat, 12 Sep 2009 13:50:50 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MmS42-00028p-7s for rsgb_lf_group@blacksheep.org; Sat, 12 Sep 2009 13:50:50 +0100 Received: from blu0-omc1-s14.blu0.hotmail.com ([65.55.116.25]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MmS3r-0004hM-Tk for rsgb_lf_group@blacksheep.org; Sat, 12 Sep 2009 13:50:43 +0100 Received: from BLU146-W7 ([65.55.116.9]) by blu0-omc1-s14.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Sat, 12 Sep 2009 05:50:30 -0700 Message-ID: X-Originating-IP: [117.12.237.195] From: Laurence BY3A-KL1X China To: Date: Sat, 12 Sep 2009 04:50:30 -0800 Importance: Normal In-Reply-To: <925667FA055F4AEEB8A57B77C90220B3@JimPC> References: <4AAB7F2D.25346.12CA10F@dave.davesergeant.com> <925667FA055F4AEEB8A57B77C90220B3@JimPC> MIME-Version: 1.0 X-OriginalArrivalTime: 12 Sep 2009 12:50:30.0405 (UTC) FILETIME=[9C0BBB50:01CA33A7] X-Spam-Score: 0.9 (/) X-Spam-Report: autolearn=disabled,HTML_10_20=0.945,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_d7819417-5296-414e-9222-e3b4a8bd8f39_" Subject: RE: LF: Re: WOLF/WSPR Sound card issues X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=FORGED_HOTMAIL_RCVD, HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --_d7819417-5296-414e-9222-e3b4a8bd8f39_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ive been faced with similar problems over the years and especially when= audio in and out rates differ. I know very little save using a couple of= simple utilities to at least demonstrate what I have in front of me. We= have some cal checks built in tests with the prog itself.....What to do= about the offset results is another matter and James describes. =20 Ive been using the standalone Sound card calibration utility in MixW softw= are http://www.mixw.net/index.php?j=3Ddownloads - its not to three decimal= places but does visualize what the offset is for both In and out to the= soundcard using a repetitive check sum. You can select the rate you have= in the windows... =20 My Sound rate in is 8102.12 for a supposed 8000 rate.... =20 I tried it today on my remote receiver up in Alaska just to check that I= had both the rx cal and the sound card cal close enough (as I can get) an= d it seems to check out. It showed, after caling the sound card a 4.1Hz of= fset at 10Mhz using the non stab R75 up there and it was dead on...I haven= t tweeked that receiver for a year or too. =20 Im using standard cheap (Im presuming) Sigmatel C and Crystal something on= one of the other ones. They arent that stable thats for sure....but good= enough. =20 Laurence=20 =20 =20 =20 > From: james.moritz@btopenworld.com > To: rsgb_lf_group@blacksheep.org > Date: Sat, 12 Sep 2009 13:33:07 +0100 > Subject: LF: Re: WOLF/WSPR Sound card issues >=20 > Dear Dave, >=20 > AC 97=20 > (http://download.intel.com/support/motherboards/desktop/sb/ac97_r23.pdf= )=20 > specifies 48kHz as the basic, obligatory sample rate for compliant sound= =20 > cards, so yours should certainly be able to do it - to find more info,= you=20 > could try looking for the audio codec chip on the motherboard - usually= a=20 > very tiny square 48pin thing near the audio connectors, and searching us= ing=20 > its type number. But I guess what sample rate is actually used will depe= nd=20 > on software, drivers and so forth - perhaps someone with experience of= PC=20 > sound card programming could advise. Looking at the audio settings in th= e=20 > Windows control panel may well tell you what sample rates are possible.= =20 > Also, some software allows you to select different sample rates, for=20 > instance Spectrum Lab, but not Argo as far as I know. >=20 > The errors you are getting in the measured frequency seem to be enormous= - 2=20 > or 3%, which would certainly give rise to problems. >=20 > Cheers, Jim Moritz > 73 de M0BMU >=20 > ----- Original Message -----=20 > From: "Dave Sergeant" > To: > Sent: Saturday, September 12, 2009 11:59 AM > Subject: LF: WOLF/WSPR Sound card issues >=20 >=20 > It seems that both WOLF and WSPR are > > designed for current sound cards which have 48,000 and 96,000 clock > > rates. Mine is obviously from the old stable so has 44,100 etc rates. > > > > For information it is the sound card interface built into the > > motherboard, an ASR Rock K7S41GX dating from 2003 with generic AC'97 > > sound. Zilch more given about its spec in the manual. > > >=20 >=20 _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/=3D --_d7819417-5296-414e-9222-e3b4a8bd8f39_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Ive been faced with similar problems over the years and especial= ly when audio in and out rates differ. I know very little save using a cou= ple of simple utilities to at least demonstrate what I have in front of me= . We have some cal checks built in tests with the prog itself.....What to= do about the offset results is another matter and James describes.  
Ive been using the standalone Sound card calibration utility in MixW softw= are http://www.mix= w.net/index.php?j=3Ddownloads - its not to three decimal places= but does visualize what the offset is for both In and out to the soundcar= d using a repetitive check sum. You can select the rate you have in the wi= ndows...
 
My Sound  rate in is 8102.12 for a supposed 8000 rate....
 
I tried it today on my remote receiver up in Alaska just to check that I= had both the rx cal and the sound card cal close enough (as I can get) an= d it seems to check out. It showed, after caling the sound card a 4.1Hz of= fset at 10Mhz using the non stab R75 up there and it was dead on...I haven= t tweeked that receiver for a year or too.
 
Im using standard cheap (Im presuming) Sigmatel C and Crystal something on= one of the other ones. They arent that stable thats for sure....but good= enough.
 
Laurence
 
 
 
> From: james.moritz@btopenworld.com
> To: rsgb_lf_grou= p@blacksheep.org
> Date: Sat, 12 Sep 2009 13:33:07 +0100
> Sub= ject: LF: Re: WOLF/WSPR Sound card issues
>
> Dear Dave,
&= gt;
> AC 97
> (http://download.intel.com/support/motherboard= s/desktop/sb/ac97_r23.pdf )
> specifies 48kHz as the basic, obligat= ory sample rate for compliant sound
> cards, so yours should certai= nly be able to do it - to find more info, you
> could try looking= for the audio codec chip on the motherboard - usually a
> very tin= y square 48pin thing near the audio connectors, and searching using
&g= t; its type number. But I guess what sample rate is actually used will dep= end
> on software, drivers and so forth - perhaps someone with expe= rience of PC
> sound card programming could advise. Looking at the= audio settings in the
> Windows control panel may well tell you wh= at sample rates are possible.
> Also, some software allows you to= select different sample rates, for
> instance Spectrum Lab, but no= t Argo as far as I know.
>
> The errors you are getting in th= e measured frequency seem to be enormous - 2
> or 3%, which would= certainly give rise to problems.
>
> Cheers, Jim Moritz
&= gt; 73 de M0BMU
>
> ----- Original Message -----
> Fro= m: "Dave Sergeant" <dave@davesergeant.com>
> To: <rsgb_lf_g= roup@blacksheep.org>
> Sent: Saturday, September 12, 2009 11:59= AM
> Subject: LF: WOLF/WSPR Sound card issues
>
>
= > It seems that both WOLF and WSPR are
> > designed for curren= t sound cards which have 48,000 and 96,000 clock
> > rates. Mine= is obviously from the old stable so has 44,100 etc rates.
> >> > For information it is the sound card interface built into the> > motherboard, an ASR Rock K7S41GX dating from 2003 with generic= AC'97
> > sound. Zilch more given about its spec in the manual.<= BR>> >
>
>

Your E-mail and More On-the-= Go. Get Windows Live Hotmail Free. Sign up now. =3D --_d7819417-5296-414e-9222-e3b4a8bd8f39_--