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OT (slightly) SLMs


cwop

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I wonder how many forum members own a better than hobbiest (i.e. Radio Shack) grade SLM, e.g. one that can measure very soft sounds (25-30dba)? A good ANSI Type 11 is not too prohibitive in price these days and can be a very educational tool. Its fun to use "C" weighting and see how much 'inaudible' noise is in the room, listening or otherwise. My country location listening room is a very quiet 26dba but 38dbc largely attributable to LF sounds that might be from light outside wind etc. If you're listening to music at average 75-85 dbc then there is only a S/N of 37 to 47 db............The "A" weighting looks better overall. My point here is the "A" corresponds more closely to the Fletcher-Munson equal loudness curves and how we actually hear. BTW, I own an ANSI Type 11* for involvement in community noise assessment. (Boom cars anyone??)

*American National Standards Institute

RJP

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