- Important Notes
- Audio input must be monophonic. This is not a problem for inherently monophonic instruments (sax, vocal, etc..) but you must be careful with instruments like guitar.
It is imperative that you avoid overlapping notes or having notes ringing in the background.
If even a tiny part of two subsequent notes overlap, Midifier will be unable to recognize them properly!
- Pitch Bend Range (PBR) or Pitch Wheel Sensitivity:
The PBR of Midifier and the PBR of the MIDI device you play the recorded MIDI file on, or the device Midifier's output is sent to, must be the same. On most MIDI devices the PBR can be set automatically (by Midifier of by the MIDI file). Just set Midifier's PBR to 12 semitones (default setting) and there's nothing more to do.
However, there are many VSTi and DXi instruments where the Pitch Bend Range of the synth must be set manually. On such MIDI devices you must set the Pitch Bend Range manually.
Make sure that the PBR of Midifier and the PBR of the synth read the same value (usually 12).
Otherwise the notes will be out of tune.
- The audio input should be as clean as possible. For acoustic instruments, use a closely placed microphone to avoid room reverberation and background noise. For
electric/electro-acoustic instruments (electric guitars, etc..) just plug into your audio card input or
mixer. Be mindful of the input levels.
- Don't use effects before going through Midifier. There's almost no point
in using them, but in certain cases you can employ a compressor or overdrive to increase sustain.
Use them carefully to avoid noise.
- Watch for CPU overload.
Midifier is a computationally intensive plugin. It's easy the overload the CPU on slower machines or when you use multiple Midifiers or virtual instruments.
If you experience cracks, strange noises, drop outs, check the CPU performance meter.
In such cases a simple solution is to record the output of the Midifier on the MIDI track
(without the synth), then disable Midifier and feed the synth with the recorded MIDI data.
- Buffer size warning:
(doesn't apply when recording to file) Unfortunately on some sequencers (Cubase SX) the time resolution of the MIDI data is quantized by the audio buffer size.
Professional sound cards allow buffer sizes < 10 ms, which is fine in most cases.
But multimedia sound cards may have buffer sizes like 2048 samples (46 ms) or even 6000 samples (136 ms). On such sequencers (Cubase SX) buffer size (latency) above 10 ms may degrade Midifier's performance.
- Latency And Real-Time Issues
If you're processing a pre-recorded audio track (normal usage) you will
not experience any latency. Midifier detects the timing of the note-ons with great accuracy, even in the bass
range. Yet, Midifier is not applicable for live performance. If you feed Midifier with live input,
you will get about 50 msec delay, which is too much for live playing. We do
however recommend trying Midifier in real-time, as it will acquaint you with how
Midifier will most reliably recognize the notes as they are played.