In Reply to: RE: What do you think? posted by Bill Fitzmaurice on February 11, 2016 at 11:34:34:
Hi Bill
It's possible he measured in a bunker or basement but i have never seen a "normal house" measure more slope than about 9dB/oct and one was as low as 4dB/oct.
What i see often enough though is people using sequence based measurement systems that show extra an lf plateau like is shown.
When one see's the lf response curve rolling off and then flattening out, it is most often been the noise floor, not a long enough gate time or changes when say 5 measurements are averaged. Each time you double the number of measurements being averaged, you reduce the noise uncertainty by 2. Remember these sequence based systems do not have good noise immunity compared to TDS.
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Follow Ups
- RE: What do you think? - tomservo 05:33:12 02/12/16 (1)
- RE: What do you think? - Bill Fitzmaurice 07:50:46 02/12/16 (0)