dBa or dbC for noise measurements?

[vicenterc at comcast.net]

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. 
> >> 
> >> Thanks, 
> >> 
> >> Vince Bortone 
> > 
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