Hey, all!
I just sent an email to BRS Support:
"We all have different levels of hearing, so what is not noticeable for some, may be for others. That is why I wished there would be some objective tests, using standardized equipment, for the different circulation pumps that are available today. Sounds like a perfect subject for BRS Investigates! A good quality audiometer, set 50 cm away, pointing straight at the base of the pump. Would be important that you let all the pumps break in for a week or two, for the results to be applicable for home reefers.
If I know BRS, you would probably go several levels deeper, measuring the frequency of sound, and test at different distances from the tank as well. Basic physics have it that higher frequency sound waves (air waves) decay faster, than lower frequency. Does it affect how "loud" we perceive pump noise? Are there pumps that are loud (ex. 45 dB?) at 20 cm distance, but quiet (ex. 19 dB?) at 1 m? Are there pumps that are medium-loud at 20 cm, that stay almost equally audible at 1 m or even 2 m? Graphs, please.
I think this would benefit the whole reefing community a lot. And with very little effort from you guys, compared to all your other incredibly detailed, time-consuming, and expensive investigations.
Best regards,
Tom-André Thomsen"
What do you guys think?
I just sent an email to BRS Support:
"We all have different levels of hearing, so what is not noticeable for some, may be for others. That is why I wished there would be some objective tests, using standardized equipment, for the different circulation pumps that are available today. Sounds like a perfect subject for BRS Investigates! A good quality audiometer, set 50 cm away, pointing straight at the base of the pump. Would be important that you let all the pumps break in for a week or two, for the results to be applicable for home reefers.
If I know BRS, you would probably go several levels deeper, measuring the frequency of sound, and test at different distances from the tank as well. Basic physics have it that higher frequency sound waves (air waves) decay faster, than lower frequency. Does it affect how "loud" we perceive pump noise? Are there pumps that are loud (ex. 45 dB?) at 20 cm distance, but quiet (ex. 19 dB?) at 1 m? Are there pumps that are medium-loud at 20 cm, that stay almost equally audible at 1 m or even 2 m? Graphs, please.
I think this would benefit the whole reefing community a lot. And with very little effort from you guys, compared to all your other incredibly detailed, time-consuming, and expensive investigations.
Best regards,
Tom-André Thomsen"
What do you guys think?
