On Tue, 1 Jul 2008 10:15:55 -0700 (PDT), Kasterborus
<kasterborus@[EMAIL PROTECTED]
> wrote:
>Hi,
>
>I'm looking for a circuit that can read a standard line level audio
>signal and output a continous voltage 0-5v pro****tional to the
>amplitude of the input.
>
>This in turn would be read by an ADC/microprocessor to modulate some
>fla****ng lights.
>
>As always - any help is greatly appreciated.
>
If you are going to use an ADC and microprocessor anyway, you might
want to consider letting them do more of the work. You could provide
a preamp to get the signal in range of the ADC, and let software do
the rest.
That way , the software can handle attack/decay time constants, and
most im****tantly it can do FFT spectral analysis to get frequency
information, if you later decide you want it.
Of course, this will mean that you will need to sample at a much
higher rate and deal with the flow of data. You don't mention the
capabilities of the uP you have in mind... can it handle this kind of
workload?
Best regards,
Bob Masta
DAQARTA v4.00
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Sound Level Meter
FREE Signal Generator
Science with your sound card!
|
