Chris I found the abstract and filter diagram on John Lahr's web site. 1) I am no= t sure how the max gain is chosen. Is it based on the difference between th= e actual sensor low frequency corner and the desired low frequency corner g= iven a 40 db /decade dropoff?=A0 2) I assume the two single pole circuits i= dentical 3)=A0 Do the other values in the example circuit remain the same e= xcept as you have commented on? 4) If I want a lower corner frequency of 0.= 03 hz is the "lower turnover frequency (1/2 Pi C1 R2)" =3D 0.015 hz? It is = probably obvious I don't have the full report. Regards Barry
Chris I found the abstract and filter dia= gram on John Lahr's web site. 1) I am not sure how the max gain is chosen. = Is it based on the difference between the actual sensor low frequency corne= r and the desired low frequency corner given a 40 db /decade dropoff? = 2) I assume the two single pole circuits identical 3) Do the other v= alues in the example circuit remain the same except as you have commented o= n? 4) If I want a lower corner frequency of 0.03 hz is the "lower turnover = frequency (1/2 Pi C1 R2)" =3D 0.015 hz? It is probably obvious I don't have= the full report. Regards Barry http://www.seismicvault.com |