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MIDI - Tempo Slow Down

Posted on 1997-05-13
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Last Modified: 2013-12-27
MIDI PLAYBACK
I am experiencing a slow-down in tempo when scrolling in Cubase (or indeed any MIDI playback facility (ie Cakewalk & Win'95's own MIDI File Player).  This problem occurs when playing MIDI data alone.

I'm using a Turtle Beach Fiji/Yamaha DBXG50/MidiEdge Interface/Cubase combination. I also have an ESS Sound Card (SB Compatable)fitted for Games.

AUDIO PLAYBACK
The following message usually only occurs when playing back Audio tracks, however I have got it when playing just MIDI data:-

System too slow. Playback stopped. Please mute 1 or more Audio Tracks or Switch to a lower sample rate

The Audio Test which comes with Cubase states I can record up to 8 Stereo Audio tracks. I'm lucky to be able to record 3 mono ones.

My system:      Win'95 OSR2
                Intel P166 MMX
                32 MB EDO Ram
                2 x 2.1GB HD's
                Matrox Mystique Video Card 4MB
                Cubase Score 3.05
                EIDE Bases System

Rodney Orpheus (Cubase Users) wrote back to say "I'ts your video card driver. Get the latest one from Matrox, or try using a normal VGA driver
instead."

Tried this - no difference.

However, I've been told my IRQ settings are a little odd, see below:-

IRQ USAGE SUMMARY:
0 - System timer
1 - Standard 101/102-Key or Microsoft Natural Keyboard
2 - Programmable interrupt controller
3 - Communications Port (COM4)
3 - Communications Port (COM2)
4 - Communications Port (COM1)
6 - Standard Floppy Disk Controller
7 - Printer Port (LPT1)
8 - System CMOS/real time clock
9 - ESS ES1868 Plug and Play AudioDrive
10 - Standard IDE/ESDI Hard Disk Controller
11 - Matrox MGA Mystique PowerDesk
11 - IRQ Holder for PCI Steering
12 - Multisound Fiji Wave & MIDI
13 - Numeric data processor
14 - Intel 82371SB PCI Bus Master IDE Controller
14 - Primary IDE controller (dual fifo)
15 - Intel 82371SB PCI Bus Master IDE Controller
15 - Secondary IDE controller (dual fifo)

Also worth noting:- The MultiSound Fiji Card had a '!' mark by it, in both the IRQ and MEMORY listings. I don't know why, or what to do about it.

The Wave device for Modem in the properties listing also has a '!' by it. Also it has 2 rather than 1 entry in the Device Manager listing - can I safely delete one of them?

What can I do - any ideas?

Your help would be appreciated.
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Question by:bigstar
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9 Comments
 

Accepted Solution

by:
s001ick earned 50 total points
ID: 1599413
bigstar,

if one of your IDE/ESDI controllers is on your midi card/sound+midi card and you're using that controller for a hard disk or other IDE device, you might experience such a slow down due to the enormous amount of data that is being bussed through the port (otherwise known as bottleneck).  If you do indeed have an IDE/ESDI controller interface on your card and you're using it, try switching to a controller on your motherboard....if they're full just slave the disk off another and measure the results.  Your IRQ settings look fine to me..although most sound cards (I don't know specifically about the Multi-sound)use IRQ 5 (at least SB-clones do.. :) I hope this helps you...I'll keep on researching, email me if you have any further questions...

0
 

Author Comment

by:bigstar
ID: 1599414
Thanks s00licks

I need more information - how do switch to a controller on my motherboard. Although not stated in SYSTEM, IRQ 5 appears to occupied by my MIDI INTERFACE CARD ('MidiEdge' 1 in 4 Out).

How can I Email you directly?

I'm not awarding any points yet - as I need to discuss this further - I'm not merely being stingy
0
 

Author Comment

by:bigstar
ID: 1599415
I'm confused, I awarded s00lick 0 points, 100 has been taken. What do I do?
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Expert Comment

by:s001ick
ID: 1599416
bigstar,

email me at kaps@erinet.com

switching drives to another controller is very, very easy.  Like I said before, my answer is only pertinent if indeed you have a drive attached to some IDE controller that is on your sound card. If you do have an IDE hard disk or CD-Rom drive attached to this card, I would use your motherboard's controller.

1) Make sure you have a drive attached to your sound-card...if not ignore the following suggestions and email me with more information.

2) gently pull directly upward on the cable head (the thin black thing) on the end of the cable.  Make sure you notice that pin 1 on the cable is red versus the other pins being white or grey.  Keep track of pin 1 and where it is.

3) Look for an open IDE port on your motherboard...if you don't know where to find them, trace where other hard disk connections are going or CD-Rom drives are going....if you follow one of their connections to the motherboard, then that's where your motherboard's IDE interface is.  

4) Find an open port...if there no open ports you can slave a hard disk or CD-Rom drive off of another disk drive.  Look in your hard disk manuals for exactly how to set the switches or jumpers....usually you need a different kind of IDE cable with several open connections along the length of it (a daisy-chain IDE cable).  You can get one of these at a good computer store (CompUSA, Best Buy, etc...) or at a local computer store, they're easily made and shouldn't cost you more than $10.00

5) After making the proper jumper/switch settings to turn your disk into a slave device rather than master...plug the new IDE cable into the master disk drive.  Remember what I was saying about pin 1? Here's where it comes in:  Line up Pin1 (The red line on the IDE cable) with the "1" on the interface...usually there's a little 1 printed somewhere near the interface....plug Pin 1 into the socket directly next to that little "1" and then push the entire cable into the socket firmly.  Check your connection by applying gentle pressure to the back of the cable head until you can't push in.

6)On your new daisy-chained IDE cable look for another open port along the length of the cable...plug your slave disk into that port...and then plug the other end into the motherboard following the same instructions about "Pin 1."  Usually, the worst thing that can happen if you plug it in wrong is no data transfer...but of course that's "usually."  You should definitely make sure that you plug it in right because you might experience electrical errors, etc... (It's like plugging an "in" into an "in" in a patch bay or something when you're using your MIDI equipment).  :)

7) I don't know what kind of ROM BIOS your computer has.  Depending on how new it is, the ROM BIOS will automatically detect the slave disk and you can proceed with life as usual...but sometimes it isn't that easy and you'll have to reference your manual to tell you exactly what type of disk it is...Check for this information:

If the disk is 1GB or more, you're going to need LBA turned on for that particular port that your hard disks are plugged into...mostly likely this is turned on because I think you said you had > 1GB disks in your system.

Check about how many cylinders and heads on your disk drive...look in your manual, contact the company, or hire your local nerd to help you out with that one. :)

Win95 shouldn't have any problem detecting this disk...you'll have to go through the usual rigmarole of waiting while it "installs new devices"  check your Device Manager to make sure that your disks are properly set up and that there aren't any interrupt conflicts, etc...

I hope this helps.... btw...if your interrupts are screwed up in Win95 and this doesn't help (the disk slaving thing) I would again get your local computer guy to come over and fix up your interrupts and DMA usage in your computer (don't worry about the technical jargon... the expert should know what to look for)

If this doesn't help mail me again...kaps@erinet.com and I'll be glad to help you out! BTW I'm a drummer that uses MIDI equpment, I've got a Roland Octapad for triggering, and MT-32, and an RA-8...I haven't used the stuff in a long time, but this might spark an interest in them again....

Another suggestion would be (I know you're getting sick of these) if all else fails is to go out and get a new sound card if the one you're using is old...for good MIDI support and sequencing stuff (if you need SMPTE code, I know of a card that costs a little bit more...but it does the job) is a Sound Blaster AWE 32/64...they're great and usuallty don't cause hassles...plus if they do, they're tech support people are great!

write me! kaps@erinet.com
Sincerely,
Ian Kaplan

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Author Comment

by:bigstar
ID: 1599417
Thanks s00lick.

I'll Email you to clarify one or two things about my system
0
 

Expert Comment

by:Zone87
ID: 1599418
I have the same problem with midi slow down

system:-

Intel P233, Txpro III motherboard, S3 Verge Graphics Card
Ide Hard Drive 6gb,Sound blaster vibra 16 bit
64mb sdram, 3dfx card.

Running midi through the com port to my korg x5dr via the host

I am able to boost performance by turning the uart option off on the com port using the preferences on my computer.

Midi slow down is a strange error, I did not have a problem when using my DX4 100.

I'm using cubasis, with no audio, and am still having midi slowdown. if anybody can help, email me Zone87@hotmail.com
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Expert Comment

by:Zone87
ID: 1599419
Windows 95 version 1

I have know this to perform better results with midi playback

Zone 87
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Expert Comment

by:gerb
ID: 1599420
Try using

[vcache] Found in your system.ini file

more on this later in the week
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Author Comment

by:bigstar
ID: 1599421
thanks
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