Fujitsu Laboratory Ltd. said it has developed a new magneto recording technology that realizes a hard disk drive recording density of 100Gb per square inch, or about 2.5cm by 2.5cm.

Use of this technology enables a 2.5-inch HDD in a notebook PC to have capacity of about 110GB.


according to this article.

/Michael

Is there enough music in the world to fill an empeg with 2 of those disks ?

I suppose it depends on your defenition of music.

Cheers,
Hans


Mk2 - Blue & Red - 080000431

Well...

One can always use less compression - not that my ears are golden enough for it to make any difference...
But it will cut down the number of units needed for that roadtrip to the moon

/Michael

Some one check my math but is that about 3660 hours or 152 days or 21 weeks? Based on 2 x 110g hdd, 16.6 hrs per gig

mmmm
neverending music supply. All in one easy to transport form.

Bet you never envisaged that when you built the mp3car, Hugo!

Murray 06000047
Just increasing my post count

Nothing but wav's

#695 empeg-car Mk2/Green/Amber/Neon Red/Clear/Smoke-12Gig needs tuner,2.x, VR

"No buyers regret"

Greetings!

Actually, I am not certain that is a good idea. Given all of the caching involved, and spinning down the drives, I would think playing wav files would make you (slightly) more vulnerable to vibration, and would certainly chew up more I/O. Not that the empeg could not handle it, but it is something to think about.

Paul G.
SN# 090000587 (96GB Smoke)

Paul, I've thought the same thing about wav files.... are "barely compressed" mp3's or wma's still a lot smaller in file size than a wav?

32GB (JUST UPGRADED!) Mk. II BLUE
Detroit, MI USA
www.PfeifferBeer.com

IIRC wav's would be 2(channels)x2(bytes/sample)x8(bits/byte)x44100(samples/second)=1.441.200 bits/second, so even at (a ficticious, I have no idea what the max rate is, if there is one) 700kbps you'd still be saving 50% or so.

Personally, I can't hear any difference from CD with Lame VBR at an average bitrate around 170-200 kbps so I don't bother with higher rates - would rather put more music liked by friends but not myself on it...

/Michael

IIRC wav's would be 2(channels)x2(bytes/sample)x8(bits/byte)x44100(samples/second)=1.441.200 bits/second, so even at (a ficticious, I have no idea what the max rate is, if there is one) 700kbps you'd still be saving 50% or so.

The maximum bitrate of MP3 is 320kbps, I believe.

Another alternative to consider is FLAC which would give you 25-65% reduction of file size (depending on the type of music) in a lossless audio format.

Borislav

Significantly. There are other people on the board who can do the math much better than I, but in practice I find a CD quality wav file about 10.5MB / minute and a good MP3 to be about 2MB / minute. These are just general estimates from my encoding. As was said in this thread, the highest MP3 is really about 320kbps or 2.4MB / minute.

Please correct the math as needed - these are only rough estimates and your milage may vary.

I don't want to break any NDAs, but can any of the 2.0 beta testers or empeg folks respond on how well the empeg performs with CD Quality WAV files. Do you notice any problems with caching? Are the drives spun up more? Any noticable operational / playback differences?

Personally, I would only use WAV files for something that absolutely could not pass through a compressor - test files, audio training, pink noise, calibration tracks, etc.

Paul G.
SN# 090000587 (96GB Smoke)

I don't want to break any NDAs, but can any of the 2.0 beta testers or empeg folks respond on how well the empeg performs with CD Quality WAV files. Do you notice any problems with caching? Are the drives spun up more?

I don't think it's any secret that the drives cannot spin down at all when playing WAV. A Mk1 has less than 3Mb of cache memory, enough for only 20 seconds of WAV. You don't want to spin the disks up and down every 20s.

Peter

In reply to:

---

A Mk1 has less than 3Mb of cache memory, enough for only 20 seconds of WAV.

---

OK Peter, so how do we get on with soldering some larger memory chips in there, or should we talk to Patrick/Hugo about that one?

(list 6284, Mk1 S/N 00299 4GB blue [for sale]. Mk2 S/N 080000094 6GB blue)

OK Peter, so how do we get on with soldering some larger memory chips in there, or should we talk to Patrick/Hugo about that one?

Memory chips? Um, those'll be those little black electronics-styley things then?

I don't think any of the car player models supports bigger memory chips (even if you fancied unsoldering and resoldering surface-mount DRAM, an operation even Hugo "Bodge Wire" Fiennes finds interesting).

Peter

Darn!

(list 6284, Mk1 S/N 00299 4GB blue [for sale]. Mk2 S/N 080000094 6GB blue)

how well the empeg performs with CD Quality WAV files.

FWIW: A l l l l l o o o o n n n g g time ago, Rob Schofield and myself did a compare of the empeg (mk1) playing wav and mp3 files over my home stereo system (using kim's wav player). From what I can remember, there was a noticeable differential, demonstrating that mp3 imposes more limitation than the empeg!

This was on audiocatalyst and MP3 producer (?)

Henno
mk2 6 nr 6