Hi-MD transfer speed

[alcohol]

Hi,

Does anyone know how long it take to fully write a 1.0GB Hi-MD with data only?

I suppose those who already has the new NH-600D will know . . .

[The_Stamp]

Hi-MD can write at about 10mbps, which would be about a meg a second. thats 1000 seconds... (fetches calculator)... 16 minutes. 20 seconds. thats without writing to the TOC for every file. next time, please post this in the sticky thread. but since you just arrived here, i'll let it slide (not that i have control over that or anything)...

but...

WELCOME TO MINIDISC.ORG!

[crazeybt1]

option not explicit

forum1.print "hmm....just 10mbps ..can u show me ur calculations?

cuz i thought it was more like 15mbps..ok let's just say the value 1X = 150kpbs or "???"..cuz i'm thinking 1X = 150kbp & 1000kpb = 1mb then...100x would b something like 150kbps * 100 = 15000kps / 1000kps = 15mbps :ohmy: makes sense??????

ok so now the time prospective would look something like this..to transfer 1GB which more or less takes the value of 1000Mb (1024MB "~")...=> 1000/100X = 10mins"

private sub command1_click ()

Dim My answer as correct value

Dim ur response as string

string1 = ur freedom of speech

Endsub.... :laugh:

[jadeclaw]

In reality, it seems to be slower,

double speed (~300k/sec) on writing and quad speed (~600kB/sec) on reading.

See the MDCenter.nl Report in the middle of the page.

Speed depends on the disc type used.

Maybe someone of the first owners may test this for us...

[The_Stamp]

option not explicit    

forum1.print "hmm....just 10mbps ..can u show me ur calculations?

cuz i thought it was more like 15mbps..ok let's just say the value  1X = 150kpbs or "???"..cuz i'm thinking  1X = 150kbp  & 1000kpb = 1mb then...100x would b something like 150kbps * 100 = 15000kps / 1000kps = 15mbps  :ohmy:  makes sense??????

ok so now the time prospective would look something like this..to transfer 1GB which more or less takes the value of 1000Mb (1024MB "~")...=> 1000/100X = 10mins"

private sub command1_click ()

Dim My answer as correct value

Dim ur response as string

string1 = ur freedom of speech

Endsub.... :laugh:

umm ya. i can recognize VB a mile away

anywho, i bwlieve it was written that it was about 10mbps. yes i realize that 10mbps = 125kb/s, but i kept it simple for simplicity's sake. i guess i should have bolded and underlined my "about" words .

end. (delphis better)

[Damage]

My rough calculation:

550 MB DivX File to 1GB HiMD:

About 17 minutes and 30 seconds.

Using that:

(1 MB = 1048576 bytes)

550 MB * (1048576) = 576716800 bytes

576716800 bytes / (17.5 minutes * 60 seconds/minute) = 549254 bytes/second

550 kB/s, or 4400 kbps, or 4.4Mbps, about 1/3 bus speed of USB 1.1 (12Mbps max speed).

Sounds about right:

Remember, even on a ATA/100 bus, most hard drives can achieve at most 30-40MB/s (vs 100MB/s maximum).

Someone could run a SiSoftware Sandra's File System benchmark to get more accurate speed readings. I tried, but I got pissed off and quit in the middle of the test (took too long).

In SonicStage however:

On the average, a normal song in 256kbps takes roughly about 15-20 seconds. Or, one 60 minutes album takes about 3 minutes and 45 seconds to transfer to a HiMD 300MB disc, give or take few seconds. That's about 16X real time speed, if you want me to put it that way.

Compare that with 48kbps transfers. One 62 minute album took about 52 seconds to transfer, averaging about 2 to 3 seconds per track (for 14 track album). I know the math doesn't work out. Trust me, it takes about 10 or 15 seconds for the unit to actually start receiving file. That puts it about 60X real time for these transfers.

[crazeybt1]

wait "Damage" arn't u the T (Minidisc) Station forum main guy.. :wink:

The_Stamp.. :smile: ....i c u wanna start a heated debate..on which language is better..well i wouldn't compare delphi with VB..it's a good thing u don't believe it's even in the league of love of my life "C++"..but it's a good thing u won't compare ur such a smart guy.. :smile:

[The_Stamp]

actually, i know VB, c++, Java,html and delphi. i know the benefits of each.

VB: great beginners language (i taught myself basic on the commodore 64 ), but not expandable, and is limited to what you can do.

C++: absolutely fantastic for games. by adding libraries of any type, C++ is infintely expandable (until microsoft introduces COP)

delphi: is the ultimate business language. each version (enterprise) costs about 6000 dollars canadian (i think), and components such as flash, excel, word, or any type of compnent that is loaded in your computer cana be added to delphi. perfect for business apps. great compilier too! super fast and effiecient.

java is similar to C++ syntax wise,and can be used on any OS (the machine code converter is at the CPU level, unlike most languages). its great for internet business apps.

so, inconclusion: if your into games, C++ is the way to go (almost all of the games are made with c++)

so, crazey, if your just beginning, and want to grasp some concepts of programming, VB is the way to go. but i strongly suggest your branch off soon after you get the hang of it. it gets more and more difficult to switch (just getting the hang of syntax. you gotta watch those capitals. it doesn't fix it for you.)

[crazeybt1]

hmm...begging far from..but to be honest i've been showing some interest in delphi recently.i got delphi 7 on my pc..my prob is the transition...i love my C++ probably cuz of my community at code project..but yeah i gotta broaden my horrizons..as for delphi i never really checked it's capabalities... but those r some very good points u've mentioned in it's name especially the business aspects...cuz i'm interested in develping some biz apps..n i got this friend that's into delphi who's into making games.. but ...i don't know...well as for VB..that's just cuz i'm teaching it ..thanks ne way

[jadeclaw]

My programming language is longer than yours.

Oh, well...

First, VB can be used for serious projects like any other programming language. Except games, since speed is everything here.

Now back to MD:

On the average, a normal song in 256kbps takes roughly about 15-20 seconds. Or, one 60 minutes album takes about 3 minutes and 45 seconds to transfer to a HiMD 300MB disc, give or take few seconds.

Ok, 256k is 2MB per minute, so 60 minutes are 120 MB. We divide that by 225 seconds, that gives us ~530 kBytes per second on a reformatted disc. Not bad, I say.

[crazeybt1]

:smile: one last thing..can u foward me a list my of special sites that might be helpful in taking the language serious cuz i'm gonna start investing some time on it Thanks e-mail's crazey_bt1@yahoo

[Damage]

wait "Damage" arn't u the T (Minidisc) Station forum main guy.. :wink:

Damn, I've been found out! No, not the main guy, that's someone else I believe.

Quick note, VBs are used not only in business apps (Office comes with the ability to run VB code in its macros, and Access's functionalities can be doen with macros or pure VB code and SQL if need be) but in number of web sites running IIS, aka, the swiss cheese of web servers.

One would think by now Java's JIT compilers would be fast enough to run some primitive games, and they do (I recall several emulators running full speed with remotely modern compuboxes). But for 3D stuff, you'd need lot of calls to the GPU, VPU, etc, which Java doesn't really provide. So you're stuck with C++, C, etc. Given the right hardware access calls, I'd wager JAVA can be used (pre-compile anywho) as a pretty decent language for program development.

As a side note, I'd recommend Java over C++ if you want to learn Object Oriented programming right, C++ will just rot your brain to death.

[crazeybt1]

:smile: guys stop making me soo excited talking bout programing..u c this is a MD forum haha...i wish The_Stam didn't start this.. :smile: ....thanks for the input tho....yeah "Damage" BUSTED!!

[Christopher]

Busted? I don't understand..this community is no different than the T-Board. They may have more of a dedicated user base, but our new user registration [which is nearly 5-10x the T-Board] and seemingly all-MD related posts [barely any off topic] is something that is what a MD board should be, no?

[crazeybt1]

true ... :smile:

[lamewing]

Hey guys,

I sat down and did the folowing last night to test transfer speed and capacity of the new 1GB disc. I made a copy of a 4:02 song in 135 LP2 compression via Sonic Stage 2.0. I made 400 copies to be safe! I transferred as many as I could and got the following results:

1GB HI-MD disc holds 224 135kbps LP2 songs.

It took 26 minutes to transfer all the songs in one session.

While this is quite a bit better than say the old MD, or even the NetMD, I am unsure if it is really enough.

I have been contemplating a iPod mini for a few months. I have used one and was very impressed with its style, ease of use, solid construction, and quick data transfer.

I can copy 4GB of music onto the iPod mini in less time than it takes to make a single 1GB HI-MD disc.

I guess I can live with the speed of the HI-MD, but I am concerned about the construction quality of the machines. The 600 model really is cheaply made for a $200.00 machine. All of my MD portables (R70, R900, R909, DR7) have a solid aluminum casing which gives them a very solid feel when held. They don't "feel" cheap.

I wonder if the new 900 model will be as solild as the other 900 series MD from Sony. Also, what is up with the scroll wheel on the fron of the 600 model? It really isn't easy to use. I hope the 900 model doesn't suffer from the same problem.

Joe

[crazeybt1]

well on the topic of how it would feel.. my guess is it won't feel as solid as a unit that's enclosed entirely in a hard material such as alluminum...but it's gonna feel ok....altho having 2 units that's part alluminum n part plastic.. the plastic for my N707 seems to have been cheap for one when i purchased the unit there was a crack under by one screw ..when i took it home n i saw that i took it back to the store n had it replaced.. n the exact same thing..not only that i bought it at pc Richard in NY..i wasn't too comfortable with the crack not knowing that's how most of them came...i went to J&R n had them show me what they had in the showcase n it was the same thing....i saw a dude on the train n asked him to show me his n it was the same thing..now the other end has a crack n it seems to b cuz of dry rot so i don't know what to say..where as my G755 seemed to had been made in a very hard plactic good for the buck.....wish the NH900 was made entirely outa something hard cuz with the plasctic once u remove the screws n replace them chances r they might come out again without ur knowing due to the slackness of the plactic on the Alluminum.. Kurisu this is in under the wrong topic n i don't remember where i meant to post it shoot..

[ksandbergfl]

Hi,

Does anyone know how long it take to fully write a 1.0GB Hi-MD with data only?

I suppose those who already has the new NH-600D will know  . . .

I bought my NH-600D primarily for use at work as a portable, cheap media USB mass storage drive. I use it extensively since i got it 2 weeks ago. I am a programmer and now I have a real easy way to backup my work and take it home with me..... plus, it will play tunes in the car on my way home!

I am connected to a USB 1.1 port, and see consistent 500KB/sec write times. That means a 100MB file will transfer to the Hi-MD in 200 seconds (about 3.5 minutes). Writing a full 1GB (970MB after formatting, actually) would take around 30-33 minutes.

I haven't plugged it into a USB 2.0 port yet. I'll let you know what I find out.

There is another post on some other thread here.... users have put video files on HiMD and played them back with no trouble. USB 1.1 can handle a DVD-standard MPEG2 video stream (which is roughly 4Mbits per second, or 500KB/sec). MPEG1 and DivX files should be no problem at all.