Hi Francis I think you are absolutely correct on all counts. I am still trying to devise equipment to let others hear the Hum- some Hums probably just have acoustic and infrasonic components due to flow of dirty ground currents under properties and leakage thro building fabric etc. Just because you had a power outage doesn't mean all phases may have been off. In Hums like this a frequency shifter/amplifier may be enough.
But for others I think they are sensitive to the EM components as well. Then how do you represent this? An electret microphone also responds to E FIELDS and a moving coil mike to H fields so my guess is if you fed both to a mixer /amp you might produce a noise a bit like that Hummers hear? Regards Chris. ________________________________ From: "[email protected]" <[email protected]> To: Digest Recipients <[email protected]> Sent: Tuesday, 2 April 2013, 8:22 Subject: Digest for [email protected] - 1 Message in 1 Topic Today's Topic Summary Group: http://groups.google.com/group/hum-sufferers/topics * Digest for [email protected] - 2 Messages in 2 Topics [1 Update] Digest for [email protected] - 2 Messages in 2 Topics You received this message because you are subscribed to the Google Group hum-sufferers. You can post via email. To unsubscribe from this group, send an empty message. For more options, visit this group. -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hum-sufferers?hl=en. For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hum-sufferers?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
