Hello, I've been reading about how to calibrate monitors with Bob Katz's k-system. Using the SPL meter method, I understand that each channel can be fed a -20dBFS band-limited pink noise signal - and each loudspeaker output adjusted to read 83dB SPL in the meter (or some other desired level). This applies to individual speakers of a stereo system or to the individual satellites of a 5.1 or 7.1 system. Ardour 3.5 now has k-20 metering (and many other types) as does Fons' jkmeter. When k-20 meters are reading 0dB RMS, the sound mixer knows that the corresponding calibrated loudspeakers are putting out aprox. 83dB SPL. A pretty handy thing I think.
OK: What does one do though if one is metering a B-format or other ambisonic signal? Unlike stereo or 5.1 etc. the relationship between a particular channel on the meter and a given loudspeaker channel isn't so direct because of the decoding. jkmeter offers a 4 channel "ambisonic" k-system meter, so someone (Fons at least) must have thought about this problem before! Sorry if it's obvious what to do - but please send suggestions on how to go about calibrating loudspeaker levels for use with k-20 metering of ambi-encoded signals. Cheers and thanks, _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
