RE: Question about whole house audio

["Shane Harrison" <shane.harrison@xxxxxxx>]

Hi Paul,

The thoughts I had re. kitchen and control of audio using VR were:
1) I had expected it to be a 'close' (assume you mean directional)
microphone since in the kitchen someone is mobile.
2) I thought if it still didn't work then I am allowing for a second
microphone to simply pick up the background noise and build a
subtraction circuit to remove the background noise from the VR
microphone.

Still all to be proven of course :-)  Have you ever tried some
noise
cancellation.  The VR mic has to be quite uni-directional for it to
work
of course.

I intend to design in both step up and step down as well as absolute
settings on the volume interface.  This is all handled by a PIC so I
am
free to do what I want I guess.

Cheers
Shane

> -----Original Message-----
> From: Paul Gale [mailto:groups@xxxxxxx] 
> Sent: Monday, 9 December 2002 9:39 a.m.
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Question about whole house audio
> 
> 
> That's interesting Shane.
>  
> VR control of audio is a very difficult thing - audio in the 
> background makes accurate recognition difficult if not 
> impossible (unless you use a very 'close' mic) - I've got 7 
> Crown mics placed around the house. Accuracy is OK if there's 
> no background noise.
>  
> One thing I've found about my multi room amp is that it 
> doesn't have absolute control of volume levels i.e. you can't 
> set a particular level, only send enough 'down' commands and 
> then a certain number of 'up' commands :-( Will your design 
> allow this?
>  
> Paul.
>  
>  
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
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