Latest Timing Test Results
More testing. Using Sonar 4 Home Studio. Edirol VSC. Korg K25 Midi Controller and/or M-Audio USB Midisport 2X2, being fed from a Roland RD-300SX digital piano.
First, created a quantized HH click track on quarter notes all at equal velocities and durations for 1 bar and copied for 63 more bars.
Next, recorded some basic single note melodies of repetitive piano exercises (Berringer) at 100 BPM with audio metronome. On playback, noticed the performance was much choppier than what I played. Also tried nudging rightward by 2 units. Not much improvement. Also noticed the "lurch" at bar 1
Next tried recording starting at bar 2 without the audio metronome (using my quantized HH for reference). Piano part still much choppier than the way I played it in. Also benefited from nudging rightward by either 1 or 2 units.
Next made the TTSSEQ.ini file addition as recommended in this forum. Repeated recording test without audio metronome. Performance seemed smoother. Yet still not locked in to the click (my quantized HH) the way I played it. Also, after the TTSSEQ.ini modification, it seemed less necessary to nudge.
Bottom line: the TTSSEQ.ini modifcation was beneficial, but not a complete solution. I am still not satisfied with the way playback interprets the notes I recorded. However there is no way to tell if it is:
1) Sonar
2) The Edirol
3) My Computer and Windows Settings
4) The 2 different keyboards I used as input devices (The Korg K25 and the Roland RD300SX via the M-Audio USB Midisport)
Hope that sheds some light. Will continue testing and learning!