I have a question regarding the relationship between sound volume levels and frequency ranges, so I hope there's an acoustician in the house today...
I remember reading somewhere that volume levels perceived by the listener are affected by the frequencies of the instruments that are playing. Under this theory, virtual instruments playing at lower frequencies would need a somewhat higher dB level to sound in balance with instruments producing midrange and high frequencies. Here's my question (well, two really):
1. Is this correct?
2. If it is, and let's say I have my virtual Violas and Violins playing with a sound output of -20dB, what would be a good approximate dB level for the lower strings (String basses, and Cellos in their lower register) to sound relatively in balance?
What prompts me to ask is that when I recently upgraded to a pro audio sound card, I found that I'm having to redo all the volume controller calibrations I had done earlier. I figure that since I'm having to go through the whole exercise again, it would be nice if I could factor in higher dB values for the low strings if this would produce a more realistic balance.
Although I'm generally satisfied with my recalibrated controller values, I have some doubts about what I'm coming up with for the String basses and Cellos, so any advice I can get on this issue would be really, really, really appreciated.