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Sound Pressure Level Meter Weighting (SPL)
Hi to all,
My initial post "Is flat frequencies desirable" did not really answer what I was looking for . Though it generates a of of interesting point that never crossed my mind before. Keep it going. Now perhaps,I will ask the same question from a different perspective? According to a HIgh End magazine when setting up loudspeaker or tuning the room it is advisable to use C-Weighting measurement in the SPL. If my reading of weighting is correct A-weighting reflects perceived sound more accurately. Sound mixing engineers usually do mixing based on hearing and I doubt they use SPL to see how loud the bass should be and etc..etc. It all depends on what they hear. Correct? So, initially I measure the room response level using C-weighting and with the necessary adjustment so that gives the real measurement. But the sound turned out to be not to my liking. Then I ignored the SPL and setup the room and speakers placement according to my ears and I got the sound right tome the select few who I think understand music well. When the measurement done using SPL and test tone it is found that the room is now tuned to emphasize the lower frequencies. So my question is should the room and loudspeakers tuned and placed so that we get a flat frequencies based on A-weighting (i.e, perceived loudness to human rather than actual loudness)? If the answer is yes than was the High End magazine was wrong to ask us to use C-weighting? Regards, ST |
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