AudioBanter.com - View Single Post - Self-adjusting equalizers?

In article ,
(Scott Gardner) wrote:

On Mon, 29 Mar 2004 22:08:04 -0800, Kevin McMurtrie
wrote:

In article ,
(Scott Gardner) wrote:

Does anyone make an equalizer that will automatically adjust its
settings when connected to a real-time analyzer? I was looking at the
AudioControl SA-3055 analyzer, and it has the capability to convert
your car's frequency response curve to an IASCA score. If you could
design an analyzer that would provide feedback to an equalizer, you
could program the final response curve you want, then have the RTA
analyze your current response curve and automatically send control
signals to the EQ to change its settings until your in-car response
matches the curve you specified, or at least as closely as possible
within the limitations of the EQ. Using this method, EQ adjustments
would take a matter of seconds to complete, and would be extremely
nice if you had a particular response curve you wanted to match, such
as the IASCA grading criteria.

Scott Gardner

Adjust for a sound source or for the sound system?

Blaupunkt and probably some other brands have self-adjusting EQs. They
play tones and listen for the response on the mic. The HU I have now
will even record multiple entries to represent the proper EQ setting for
different seats in the car. Mic not included, of course.

That actually sounds like what I was describing. That's cool that
they basically put the RTA circuitry in the head unit, so all you have
to provide is the microphone. Does it adjust the curve to some preset
"ideal" response curve, or do you have some say in what the final
result is?

Scott Gardner

I'd answer if I had the mic. It only takes it a few seconds to figure
out that it's missing then it aborts the configuration.