Em Tue, 2014-03-18 às 15:32 -0300, Iain Mott escreveu:
> For my current purposes, I'd like to reproduce as best as possible,
> ambiental b-format recordings over an array of speakers - and
> preferably
> try to match SPL measurements taken at each recording location. Do you
> think the formula above would be correct to match levels in this way?
> ie. if I make a recording at a site where the SPL is 70dB, during
> playback I meter this material (the W channel) at -13dB RMS on a k-20
> meter, and in the case of a 14 channel system, calibrate each speaker
> channel at 71.5dB SPL (x = 83 - 10log14). 


I forgot about the 3dB adjustment - and I just read in Wikipedia that
the W channel is adjusted by 3dB - so to correct my guess above, I
should calibrate each speaker at 71.5 + 3 = 74.5dB

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