Created a little tuner application that will play a reference pitch, then wait for the user audio to match the pitch and graph it.
The user audio input is fine... But, it seems NOTEOUT does not produce the same pitch frequencies from machine to machine.
Discovered this today when moving from my dying XP home system to a new XP Pro machine.
Appears the XP home system plays about 5-10 cents sharp, while the XP Pro computer plays notes 20-30 cents flat - a difference of nearly 50 cents.
Any ideas on what's going on?
How to detect and fix on the fly? (eg, play a note, capture the first frequency, subtract the difference, then add that difference to the outgoing frequency sort of thing)
Thank you for your input.