Chrisla,
C-weighting is supposed to be essentially flat, whereas A-weighting is supposed to simulate hearing sensitivity whether its a RS, B&K, or GR sound level meter. I've used them all, but now as a retiree I use only the RS, because Breul & Kjear and General Radio are expensive. I use C-scale and slow trajectory with 0 re 80 dB SPL when measuring the white noise generated by my Proceed PAV. As a reminder, white noise is equal SPL across the pass band, whereas pink is equal SPL across octave bands; 0 dB SPL is re 0.0002 dynes per square centermeter, IIRC.
db
C-weighting is supposed to be essentially flat, whereas A-weighting is supposed to simulate hearing sensitivity whether its a RS, B&K, or GR sound level meter. I've used them all, but now as a retiree I use only the RS, because Breul & Kjear and General Radio are expensive. I use C-scale and slow trajectory with 0 re 80 dB SPL when measuring the white noise generated by my Proceed PAV. As a reminder, white noise is equal SPL across the pass band, whereas pink is equal SPL across octave bands; 0 dB SPL is re 0.0002 dynes per square centermeter, IIRC.
db