dBa or dbC for noise measurements?

[Earl Haury]

Vince

It's in the sound addendum, last page of the '02-'04 rules, I'm don't see it in the current online rules.

Earl
  ----- Original Message ----- 
  From: vicenterc at comcast.net 
  To: discussion at nsrca.org ; discussion at nsrca.org 
  Cc: Earl Haury 
  Sent: Saturday, May 28, 2005 7:03 PM
  Subject: Re: dBa or dbC for noise measurements?


  Earl,

  Do you know where in AMA rule book?  In the pattern there is not mention.  IMAC clearly specs. dbA.

  Thanks,

  Vince

    -------------- Original message -------------- 

    > dBA is what is specified in the AMA & F3A rules. 
    > 
    > Earl 
    > ----- Original Message ----- 
    > From: "Ed White" 
    > To: 
    > Sent: Saturday, May 28, 2005 8:21 AM 
    > Subject: Re: dBa or dbC for noise measurements? 
    > 
    > 
    > > Use dBA. It more closely approximates the 
    > > characteristics of the human ear and is commonly used 
    > > when noise measurements are taken. 
    > > 
    > > Ed 
    > > 
    > > --- vicenterc at comcast.net wrote: 
    > >> Just a question. What weighted factor should be use 
    > >> for precision aerobatics AMA noise measurements? 
    > >> dBA or dBC. I think is dBA and was discussed a long 
    > >> time ago but I forgot. 
    > >> <BR 
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