First, make sure
you have applied all (or at least the most important) suggestions on the
Win95 performance tips page. If not, go here.
- Start the ASIO Multimedia
Setup program.
- Change your input and output
buffers to 3 (you might want to jot down what they were originally
before making changes)
- Hit the Detect Buffer Size
button, then hit OK
- Start VST
- Select Synchronization from
the Options menu
- Change your Pre-Roll to
2000
- Make sure your PPQN is set to
384, then hit OK
- Select System from the Audio
menu
- Set your File Cache Scheme
to Tape Recorder / Audio Sequencer
- Set your Monitoring to Global
Disable
- Set your Priority to Low, then
hit OK
- Make a new folder for this
test song and save it there
- Set your Audio Files Folder to
the folder of this song
- Edit a WAV file of a single
quick drum sound with another WAV editor (such as WaveLab or SoundForge)
so that the sound starts on the 1st sample of the WAV
- Save the WAV file in your new
test song folder
- Go to the Audio Pool and
import your WAV drum sound
- Drag the selection from the
Audio Pool to the Arrange window at line it up perfectly at bar 3
- Check the Q-Point and Over
Quantize to be sure it's tight
- Find a similar drum sound on
your synth and turn of all reverb's and/or delay's for that
sound
- Step record that drum sound
right at the beginning of bar 3
- Pan the synth all the way to
the left
- Pan the WAV all the way to the
right
- Select a new track to record
with audio track and make it stereo
- Open the Audio Monitor window
and hit the "in" button/s for the new stereo track
- Adjust your external mixer to
send both your synth on the left, and your WAV on the right, to the
input of your soundcard
- Place the left locator on bar
2
- Place the right locator on bar
4
- Hit the Loop
button
- Hit play and adjust the input
levels
- Hit stop and hit the punch in
button
- Go to the beginning of the
song and hit play
- Hit Stop after you have played
past bar 4
- You should now have a
recording of your MIDI and Audio (MIDI on the left, and Audio on the
right). Open the new WAV file in another audio editor (such as WaveLab
or SoundForge) and measure the distance between your MIDI and Audio,
both in milliseconds and in samples. Write it on a piece of paper and
don't lose it.
- Now go back to VST, select
System from the Audio menu and adjust your MIDI to Audio delay according
to the distance between your MIDI and Audio (in samples). You can use a
minus symbol if needed. If all is well, your delay between MIDI and
Audio should be under 1ms (hopefully no more then a few samples apart).
You can now proceed with adjusting your input
delay/pre-delay.
- Select your new recording, as
well as your original WAV drum sound, and Hit
Ctrl+E
- Measure the distance between
your recording (the right side) and your original WAV drum
sound
- Save the song and close
VST
- Open the ASIO Multimedia Setup
program
- Adjust the offset of your
input according to the distance between your WAV drum sound and your
recording of it
Once you have completed this both
your input and outputs should be perfectly in sync (under 1ms) to your
MIDI.
You can now proceed in lowering
your Pre-Roll to a usable point (depending on your setup), and raising
your audio buffers in the ASIO Multimedia Setup program to a usable point
(depending on your setup).
Note: You might not want to set
your Pre-Roll below 250
Note: Start by putting your audio
buffers back to their original state.
If you experience MIDI timing
problems even without audio playback you should raise the value of your
Pre-Roll. It's a good idea to have a Pre-Roll of at least the same ms
delay as your System Latency.
Note: Your System Latency will
change with different audio buffer settings (selectable in the ASIO
Multimedia Setup program). You will find your System Latency in the Audio
System Setup window found in the Audio menu.
If you experience occasional
audio drop out's, increase the number of audio buffers in the ASIO
Multimedia Setup program.
If you experience occasional
audio glitches that shift out of time from your MIDI arrangement, decrease
the number of audio buffers in the ASIO Multimedia Setup
program.
If you are still experiencing
problems, try different combinations in the Global Settings section in the
ASIO Multimedia Setup program.
And if you are yet still having
problems you probably have either:
- Not enough RAM
- A slow
processor
- A slow disk
drive
- Bad driver/s
- A soundcard that doesn't
support Sample Position
- A bad setup
Their are many other
possibilities as well. |