Usb Transfer Artifacts

[corduroy]

anyone experienced problems uploading recordings via USB? i had some sound artifacts in some files... anyone?

i fixed them with soundforge. next time i will take a screenshot but it's like a little bar greek pi-shaped

another thing! on the beginning of the track there is a little gap

[ozpeter]

Could be something to do with my observations in http://forums.minidisc.org/index.php?showt...indpost&p=57836 - or not... but essentially, Hi-SP transfers can suffer from problems at the location of auto-trackmarks, according to my tests.

Edited June 29, 2005 by ozpeter

[dex Otaku]

I have asof yet not had any problems with uploaded HiSP material, including at track breaks, from either my NH700 or RH10. That's from, in total, probably around a thousand tracks since last August.

Describe what you mean by "sound artifacts," corduroy. It's possible that, if you're using AGC, it's something caused by that, or by HiSP compression itself - which is lossy, and will exhibit data-reduction artifacting when content becomes too complex for it to compress well.

I have noticed when dumping [via analogue] older MDs that there are occasional chunks [anywhere from a single frame to several frames in length, a frame @SP being 11.6ms IIRC] where the phase of one or both channels is/are inverted. This results in clicking sounds in the recording. Sometimes it's single frames but the phase-inversions occur many times in a row, giving an almost static-like effect.

I've seen this happen when playing from at least 3 different MD recorders as well as my NH700, with SP material only [i've never recorded anything on an MD in anything but SP mode], and it's not connected to track marks in any way.

It's possible that it's cause by read errors and/or faulty error-correction, but there's no real way of knowing.

[corduroy]

yes, probably it's related to this because i put some marks and then deleted them... BUT the recording was not HI-SP, it was PCM.

what to say about the gap on the beginning of the track? if i use soundforge to see waves it seems normal, no flat wave even if i zoom a lot

what's the problem with it?

anyway i understood that if i want to transfer long lasting recordings it's better to split them with soundforge and not with the minidisc itself; what do you all think about it?

[The Low Volta]

anyway i understood that if i want to transfer long lasting recordings it's better to split them with soundforge and not with the minidisc itself; what do you all think about it?

if you want to do it really safe, just let autotrackmark put marks every 10 min so you never lose more than that... further use Dex's way of secure uploading and burning without gaps as it is the safest way I know

Volta

PS: safest is not to edit anything on the recorder at all, but to use auto-tracks or put trackmarks in manually while recording