yup Posted February 6, 2006 Report Share Posted February 6, 2006 Hi folk!Recently I install SS 3.4 and try new upload feature for Hi-SP and PCM files. For Hi-SP all work fine relatively fast, but I can try upload PCM from Hi-MD written by optical cabel from DVD it is work very slowly 30 minute music upload approx 10 minute. It is normal?With kind regards yup. Quote Link to comment Share on other sites More sharing options...
Petter156 Posted February 6, 2006 Report Share Posted February 6, 2006 I haven´t uploaded PCM-recordings myself but I´m asuming this is normal. Uncompressed audio-files are much larger in size than audio recorded in HiSP. Quote Link to comment Share on other sites More sharing options...
dex Otaku Posted February 6, 2006 Report Share Posted February 6, 2006 As documented elsewhere on the forum countless times since mid-2004, yes, PCM transfers are not altogether speedy.The read speed of HiMD from a 1GB disc peaks at around 9Mbps, less than the top speed of USB 1.1.If 100% of that speed were used for PCM [1.44Mbps] uploading, you would get a speed of 6x realtime. Real-world usage, and this has been the same since SS 2.1, has PCM uploading at between 2-3x realtime, which would put your 10 minute upload for 30 minutes of recording at the high end of the normal range, speed-wise. Quote Link to comment Share on other sites More sharing options...
tekdroid Posted February 6, 2006 Report Share Posted February 6, 2006 It is normal?No, you have a broken unit. Would you accept $10 for it? One disadvantage of MD is that it's relatively slow. Still, it's better than realtime Quote Link to comment Share on other sites More sharing options...
dex Otaku Posted February 7, 2006 Report Share Posted February 7, 2006 A further note to add - 1GB discs are faster both in read and write speeds than legacy MDs. Take a look at the HiMD FAQ at www.minidisc.org for specifics. Quote Link to comment Share on other sites More sharing options...
yup Posted February 7, 2006 Author Report Share Posted February 7, 2006 Thanks to all for reply. I use Hi-MD disc. And if read speed approx 9Mb/s speed upload for PCM could be 5-6 time faster than real. I use new disc from package.With kind regards yup. Quote Link to comment Share on other sites More sharing options...
dex Otaku Posted February 7, 2006 Report Share Posted February 7, 2006 . . . And if read speed approx 9Mb/s speed upload for PCM could be 5-6 time faster than real. Not to repeat myself, but since it appears you didn't read it:If 100% of that speed were used for PCM [1.44Mbps] uploading, you would get a speed of 6x realtime. Real-world usage, and this has been the same since SS 2.1, has PCM uploading at between 2-3x realtime, which would put your 10 minute upload for 30 minutes of recording at the high end of the normal range, speed-wise. Quote Link to comment Share on other sites More sharing options...
ZosoIV Posted February 7, 2006 Report Share Posted February 7, 2006 As documented elsewhere on the forum countless times since mid-2004, yes, PCM transfers are not altogether speedy.The read speed of HiMD from a 1GB disc peaks at around 9Mbps, less than the top speed of USB 1.1.If 100% of that speed were used for PCM [1.44Mbps] uploading, you would get a speed of 6x realtime. Real-world usage, and this has been the same since SS 2.1, has PCM uploading at between 2-3x realtime, which would put your 10 minute upload for 30 minutes of recording at the high end of the normal range, speed-wise.16/44.1 PCM isn't 1.44Mbps; it's 1411.2kbps (or 1411.2/1.024=1.378Mbps), giving a theoretical maximum transfer speed of 6.5x. Quote Link to comment Share on other sites More sharing options...
dex Otaku Posted February 7, 2006 Report Share Posted February 7, 2006 16/44.1 PCM isn't 1.44Mbps; it's 1411.2kbps (or 1411.2/1.024=1.378Mbps), giving a theoretical maximum transfer speed of 6.5x.Thanks, typo. [intended 1.41, which as you have pointed out is also incorrect] Quote Link to comment Share on other sites More sharing options...
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