Ron, There IS an acknowledged bug in the new Microsoft OHCI1394 driver in Windows 7 that can result in "raspy" audio. This bug affects all FireWire chip vendors parts.
Since you also had the problem on XP, it points more to your FireWire card and/or its interaction with other things on the system. I had the same raspy audio when I was trying to use the motherboard FireWire interface on a Gateway computer. When I switched to a PCIe card with a TI chip set it never occurred again. Gerald Gerald Youngblood, K5SDR President and CEO FlexRadio Systems(TM) 13091 Pond Springs Road, #250 Austin, TX 78729 Phone: 512-535-4713 Ext. 202 Email: [email protected] Web: www.flex-radio.com Tune In Excitement (TM) PowerSDR(TM) is a trademark of FlexRadio Systems On Thu, Aug 12, 2010 at 8:33 AM, Ron Wenig <[email protected]> wrote: > Eric, > > I get the same raspy audio here and I'm surprised that more people aren't > having this issue. The fix is to shut off the radio and turn it back on and > the raspy audio clears up. I think it has something to do with latency. I > have tried a lot of what was suggested and I still have the problem. I had > it on XP and still have it when I changed to Windows 7. If you look at the > archives you will see a lot of comments about it. It's something that > should be worked on by Flex but if it's only happening to a few people I > guess there's nothing that can be done. One comment from Gerald was that > there may be a problem with the firewire driver from Microsoft and they are > working on that. I'm waiting for that fix to come out. > > 73, Ron ny3j > > > On 8/12/2010 9:09 AM, George Allen wrote: > >> Eric: >> >> Are you using "powered" speakers? Does the problem occur with earphones? >> >> George >> K2CM >> >> -----Original Message----- >> From: Erik Jakobsen [mailto:[email protected]] >> Sent: Thursday, August 12, 2010 8:57 AM >> To: George Allen >> Cc: [email protected] >> Subject: Re: [FlexEdge] Raspy audio >> >> Thanks for pointing me to that. >> But it is not RF. I get it when I receive. Not if I do transmit. >> >> But very happy, that you came back here. >> >> /Erik >> >>> Look for RF feedback. Set your output as low as possible and see if it >>> still occurs. Have had similar problems that I fixed with a bunch of >>> ferrite cores. >>> >>> If I use my laptop I have to put ferrite beads on all leads in/out of >>> the laptop. >>> >>> George >>> K2CM >>> >>> George >>> K2CM >>> >>> Sent from my iPhone >>> >>> On Aug 12, 2010, at 6:00 AM, "Erik Jakobsen"<[email protected]> wrote: >>> >>> Hi. >>>> >>>> I have raspy audio here. >>>> >>>> I run the Flex 5000 A with beta v2.0.7 PSDR. >>>> The OS is W7 Ultimate 64 bit. >>>> Firmware is 2.0.2.7 >>>> >>>> The Fire Wire is running with the Legacy Driver >>>> >>>> I'm not using the things from 400 anymore. >>>> Should I >>>> >>>> The raspy is here: >>>> >>>> http://www.urbakken.dk/SDRQuickAudio.wav >>>> >>>> What can I do >>>> >>>> /Erik >>>> >>>> -- >>>> Med venlig hilsen - Best regards >>>> Erik Jakobsen - [email protected] >>>> Licensed radioamateur with the callsign OZ4KK. >>>> Registered as user #319488 with the Linux Counter, >>>> http://counter.li.org. >>>> >>>> >>>> _______________________________________________ >>>> Flexedge mailing list >>>> [email protected] >>>> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >>>> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It >>>> is used for posting topics related to SDR software development and >>>> experimentalist who are using beta versions of the software. >>>> >>> >> > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
