What size ram disk to I need?

[Metspitzer]

What I am trying to do is make a ram disk and then use Itunes to copy
music to it. The way Itunes works is when it fills one disk, it asks
for another. I want Itunes to randomly pick an hour of music for me.
Using the stop time for the ram disk, I can select those songs to copy
to one side of a cassette.

A 720 disk is 74 min. I should need a ram disk that is 710K ish.
Right?

I use the machine I am going to try this on for P2P so without
rebooting at the moment, I should just create a config.sys file that
says:

DEVICEHIGH=c:\windows\ramdrive.sys 710 /E

If there is a suggestion on how to do this with disk space instead, it
should work too.

Thanks

 

[Metspitzer]

What I am trying to do is make a ram disk and then use Itunes to copy
music to it. The way Itunes works is when it fills one disk, it asks
for another. I want Itunes to randomly pick an hour of music for me.
Using the stop time for the ram disk, I can select those songs to copy
to one side of a cassette.

A 720 disk is 74 min. I should need a ram disk that is 710K ish.
Right?
570K

I use the machine I am going to try this on for P2P so without
rebooting at the moment, I should just create a config.sys file that
says:

DEVICEHIGH=c:\windows\ramdrive.sys 710 /E

DEVICEHIGH=c:\windows\ramdrive.sys 570 /E

 

[Paul]

DEVICEHIGH=c:\windows\ramdrive.sys 570 /E

You can do a runtime RAMDisk with this.

http://memory.dataram.com/products-and-services/software/ramdisk

( http://memory.dataram.com/__downloads/memory/ramdisk/Dataram_RAMDisk_v4_0_0.msi )

The product is at version 4 now, but version 4 includes a copy
of .NET 4 mini-installer as well. I have to mention that for
complete disclosure. When you install it, two installs happen.
The product itself is installed, but a copy of .NET 4 is
installed as well. That is, unless you have .NET 4 installed
already, in which case the install would not be necessary.

If you can find an older, 3-stream version of the installer,
I don't think it uses .NET.

If you fire it up after installation, it makes a non-persistent
RAMDisk by default. Simply dial the amount of memory to use, and
have it create a disk. Using up to 2048MB should not be a problem.
If the "create disk" runs slowly, that means it's going to fail,
so you might as well stop it. When the computer has physical
memory above 4GB installed, then you can use even more memory
(up to 4GB on the freeware edition).

The product has other options, such as saving or restoring the
contents of the RAMDisk. So there are presumably other nifty
things you can do with it.

*******

CDs have a standard length, and can also use an extended burn
to go past that point. I have one CD drive here, that will
only burn to the 650MB mark and no further. (It was a surprise
when I discovered that the hard way.) I think the
rest of my drives will do more than that.

If you scroll half way down this page, there is a table of
CDROM capacity options.

http://en.wikipedia.org/wiki/Cdrom

Paul

 

[Metspitzer]

You can do a runtime RAMDisk with this.

http://memory.dataram.com/products-and-services/software/ramdisk

( http://memory.dataram.com/__downloads/memory/ramdisk/Dataram_RAMDisk_v4_0_0.msi )

The product is at version 4 now, but version 4 includes a copy
of .NET 4 mini-installer as well. I have to mention that for
complete disclosure. When you install it, two installs happen.
The product itself is installed, but a copy of .NET 4 is
installed as well. That is, unless you have .NET 4 installed
already, in which case the install would not be necessary.

If you can find an older, 3-stream version of the installer,
I don't think it uses .NET.

If you fire it up after installation, it makes a non-persistent
RAMDisk by default. Simply dial the amount of memory to use, and
have it create a disk. Using up to 2048MB should not be a problem.
If the "create disk" runs slowly, that means it's going to fail,
so you might as well stop it. When the computer has physical
memory above 4GB installed, then you can use even more memory
(up to 4GB on the freeware edition).

The product has other options, such as saving or restoring the
contents of the RAMDisk. So there are presumably other nifty
things you can do with it.

*******

CDs have a standard length, and can also use an extended burn
to go past that point. I have one CD drive here, that will
only burn to the 650MB mark and no further. (It was a surprise
when I discovered that the hard way.) I think the
rest of my drives will do more than that.

If you scroll half way down this page, there is a table of
CDROM capacity options.

http://en.wikipedia.org/wiki/Cdrom

Paul

The cassette I am trying to record with causes too much hiss. I no
longer need a ram disk, but I will keep those in mind if I ever need
one in the future.

Thanks

 

[Paul]

The cassette I am trying to record with causes too much hiss. I no
longer need a ram disk, but I will keep those in mind if I ever need
one in the future.

Thanks

Commercial cassettes are recorded with various tricks. For noise
reduction to work, the playback device has to know what it's dealing
with.

http://en.wikipedia.org/wiki/Dolby_noise_reduction

"Dolby noise reduction is a form of dynamic preemphasis employed
during recording, plus a form of dynamic deemphasis used during
playback, that work in tandem to improve the signal-to-noise ratio.

While Dolby A operates across the whole spectrum, the other systems
specifically emphasize the audible frequency range where background
tape hiss, an artifact of the recording process that is similar
to white noise, is most noticeable (usually above 1 kHz)."

http://en.wikipedia.org/wiki/Compact_Cassette

"Notches on top of the cassette shell indicate the type of tape within.
Type I cassettes have only write-protect notches, Type II have an
additional pair next to the write protection ones, and Type IV
(metal) have a third set in the middle of the cassette shell. These
allow cassette decks to detect the tape type automatically and select
the proper bias and equalization. Virtually all recent hi-fi systems
(with cassette decks) lack this feature; only a small niche of cassette
decks (hi-fi separates) have the tape type selector.

Playing Type II and IV tapes on a player without detection will
produce exaggerated treble, but it may not be noticeable because
such devices typically have amplifiers that lack extended
high-frequency output.

Recording on these units, however, results in very low sound
reproduction, and sometimes distortion and noise is heard. Also,
these cheaper units cannot erase high bias or metal bias tapes.
Attempting to do so will result in an incomplete erasure. This
is due to the fact that the bias levels for high and metal position
requires greater levels."

If there's too much hiss, something in your playback system isn't
dealing with the recorded material properly.

*******

Some commercial tapes had a tone burst at the beginning. This person
was somehow able to determine the equalization a tape was recorded with,
by means of the tone burst. I don't know if the idea is, that Dolby NR
can be determined this way, or whether a notch on the cassette shell
does it.

http://www.lenrek.net/experiments/sdr-cassette/

HTH,
Paul