Date: Tue, 15 Oct 2002 22:27:20 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] Music Playback on 100CT
>System Resources show 94% after a fresh boot, so no problem there. I routinely run my libby close to the crash line (Word2k, Excel2k, Matlab, Winamp and IE all running at once whilst being on a network for instance) and apart from the music stopping whilst everything else is busy loading something, it's been *relatively* fine as far as audio playback goes ... I do recall turning the quality down (eg. quater wave, 8 bit, mono) to actually make everything else useable though. >I have >the "hairy" light bulb, speaker, and PCMCIA monitor on the system tray. I'm >running W98se with 64MB RAM. Same here. >What I have noticed, in addition to the occasional "dropouts", is background >noise very much like tape hiss. This is through headphones. Any way to >reduce that? That's normal. The EE's out there correct me if I'm wrong but you'll notice that the impedance of your headphones is probably 32 ohms, a lot higher than, say, a pair of 8 ohm speakers jacked into the port. This means that the current induced in the audio circuit AFTER the amplifier from, say, the video refresh (you'll notice the hiss changes when you flick resolutions for instance) or the hard drive (try listening carefully when you wake the hard drive) is a lot more noticeable. Another thing is that you set the volume itself significantly lower for headphones than for speaker but the noise, being mainly injected into the amplifier circuit AFTER the volume control, stays at the same level hence it'll be more noticeable through headphones than through speakers where your volume would be higher. Although this is probably NOT the most elegant way of doing things, I've found that simply getting one of those little inline volume controls (or a pair of headphones with inline volume controls or volume controls on the 'phones themselves) does the trick nicely. Turn the volume on the libby all the way up on all the mixers (Winamp mixer, wave mixer and main mixer all set to their highest settings) then use the external inline volume control to adjust the volume to a comfortable level. This serves as a crude de-emphasis system and does reduce the noise considerably. The volume control probably also does some rudimentary matching as well depending on how it was designed. Remember to turn the volume down again on the mixers (or mute it) when you unplug the headphones or that little internal speaker will overdrive like mad next time you next get a system 'ding'! > And Raymond, how do I change the buffer size? Thanks for any >suggestions. 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. 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. Hope this helps! - Raymond --- /~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\ | | "Does fuzzy logic tickle?" | | ___ | "My HDD has no reverse. How do I backup?" | | /__/ +-------------------------------------------| | / \ a y b o t | [EMAIL PROTECTED] | | | Need help? Visit #Windows98 on DALNet! | | ICQ: 31756092 | Libretto IRC channel #Libretto on DALNet! | \~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ ************************************************************** 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 **************************************************************
