Date: Wed, 16 Oct 2002 21:24:08 EDT From: [EMAIL PROTECTED] Subject: Re: [LIB] Music Playback on 100CT
All: First, thanks for all the suggestions. I will try to recap the various tests. First, Raymond suggested a separate volume control (as a near-cure for the background hiss) for the headphones - I have not had time to get a volume control yet. To fix the dropout/scratch noises: In a message dated 10/15/02 6:36:11 PM Mountain Daylight Time, [EMAIL PROTECTED] writes: > Now I do realize that Win98 doesn't have software IRQs but perhaps a > related issue may be at work in your case? Do you have any PCMCIA cards in > your laptop which might be sharing an IRQ with the sound system? I can't > remember on the libby (and it's not with me at the moment) but can you > shift the sound card to a different IRQ in the BIOS? As it happens, I use a TDK Global Freedom modem which adds a "Wave Device for Voice" line under Sound in Device Mangler. I tried deactivating the modem during audio playback, which removed the Wave Device, but it was difficult to gauge any improvement in playback. The modem uses IRQ 3 and the Yamaha sound uses IRQ 5. From: "Andy Lawn" <[EMAIL PROTECTED]> Subject: Re: [LIB] Music Playback on 100CT >Raymond wrote: >> Winamp options>preferences>input>Nullsoft MPEG Audio Decoder>Configure >> Change the decode thread priority to highest. Yes I know this isn't a >> buffer setting, I just remembered I made this adjustment but I can't >> remember if it's there by default. The setting was already on highest. >> Winamp options>preferences>output>(whatever you have it set to here, >> probably DirectSound) >>Play with the buffer settings here, it will vary depending on >> what output >> module you're using and how much RAM you want to devote to this task. I played with the various buffer settings a little, but because the noise occurs infrequently, it takes some time to evaluate the effect of each change. Worth exploring further here. >Lee, another setting you could try is in options>preferences>plugins>input>Nullsoft >MPEG Audio Decoder. There's a setting called "Buffer entire file from disk if file is >smaller than:". If you can spare the memory then try setting this to 5000KB, or some >other size that is larger than most of your mp3 tracks. That should give smoother >playback (at the expense of longer gaps between tracks), and extend battery life as >the lib will be able to put the hard disk to sleep while playing each track. >.....Andy This worked very well. Setting the "file smaller than" to 5000KB prevented hard drive hits during playback, and so noise was mostly eliminated. I say mostly because some noise seems to be unrelated to HDD activity, almost like static discharge. It's the same sort of scratch noise, but bI haven't been able to correlate it with anything. I'm starting to think I'm too picky, or that my expectations are too high. >So translate for us Lee... did you get the pops to go away? I'll try what >ever you've done if you managed to fix the problem. > >Matt Yes, with Andy's idea. The downside is using lots of RAM and therefore limiting other activities. As I said, I'll keep working on the Winamp buffers and see how that works. One additional change I made in Winamp was options>preferences>output>nullsoft waveOut plug-in v2.02(x86) - changed from Wavemapper to Yamaha Audio. No real change noted. Anybody know why Wavemapper is recommended on this setting, rather than Yamaha Audio? Thanks again for all the help, folks. Lee ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
