Sparky191 Posted May 8, 2007 Report Share Posted May 8, 2007 When using HiMD - PCM is the antiskip buffer compressed?This might be related to thishttp://forums.minidisc.org/index.php?showt...&pid=110081 Quote Link to comment Share on other sites More sharing options...
tekdroid Posted May 8, 2007 Report Share Posted May 8, 2007 When using HiMD - PCM is the antiskip buffer compressed?as far as i can tell, it reads more often in PCM mode, to keep the buffer full - but it's been a long time since i ever used ATRAC to compare intervals between whirring noises. Quote Link to comment Share on other sites More sharing options...
ZosoIV Posted May 8, 2007 Report Share Posted May 8, 2007 (edited) In the old days, CD players use to compress PCM into ADPCM when using skip protection to allow for more audio to be stored on (what at the time were) expensive memory chips. Nowadays, RAM is so cheap that I doubt any Hi-MD player has less than a 16Mbit buffer, which itself would store about 12 seconds of 16-bit PCM. I noticed that when using PCM, the recorder would spin up 3 or 4 times per minute, which would support a 16Mbit buffer. In contrast, HDD players usually have 32 to 64 megabytes of RAM, which is easily enough to cache a handful of songs (or 3-6 minutes of PCM) at once. Edited May 8, 2007 by ZosoIV Quote Link to comment Share on other sites More sharing options...
greenmachine Posted May 8, 2007 Report Share Posted May 8, 2007 I suspect the buffer to be 8 MByte (64 Mbit) large in my NH700 and PCM to be uncompressed, see here. Quote Link to comment Share on other sites More sharing options...
Sparda Posted May 8, 2007 Report Share Posted May 8, 2007 Ahh, I forgot to thank you for the explanation greenmachine Quote Link to comment Share on other sites More sharing options...
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