No, they are the same note depending on which system you use. Here we use the single note reference i.e. A1, Bb2, C40, F45 etc. You might use the octave reference system which to me is confusing. You guys over there went astray ever since the Boston Tea Party! AF ----- Original Message ----- From: Avery To: Pianotech List Sent: Monday, March 20, 2006 8:53 PM Subject: Re: MY ETD IS MADE BY SIEMENS Alan, A0 & A1 are an octave apart. :-) Avery At 02:39 PM 3/20/2006, you wrote: ....................."I seem to remember reading somewhere that it was around 30 hz. Very iffy. /Is the point which beat rate is too fast to be unusable for us aural tuners any higher than 12 bps? Maybe that's another measurement for an ETD./ Definitely (Ric) not. You can use 15 - 20 bps no problem. That is to say if you are comparing two intervals in which the reference note yields roughly 20 bps for both intervals... an aural comparison is easy enough to accomplish."............. This is the reason why AO (or A1) is the first note or lowest note on the piano. Any frequency (read as beat rate) lower than 27.5 Hz is no longer perceived as a sound by the "human" brain. In theory we start to hear the separate beats or pulses. AF -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060320/7a0b43f2/attachment.html
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