Measuring freq. response w/ PC?

[robertbartsch]

I would like to asses the effectiveness of a given crossover for few projects I have built lately.

Is there a PC program that can be used to measure frequency response using commercially available microphones?

Thx..

[grumpy]

Yes.

By "PC" I presume you mean MS Windows.

The costs range from free, to quite expensive.

Available mics, suitable for measurements range from $50
(less, if you want to DIY), to ... quite expensive.

There are quite a few threads here related to this topic.
I would suggest looking for a package that includes a swept-sine
signal, but pink-noise and an "RTA" can get you started.

[ratitifb]

take a look at this web site. There is a lot of very interesting downloadable docs regarding general audio measurements ... and ARTA in full licence is a great audio tool based on PC !

http://www.fesb.hr/~mateljan/arta/

Regarding mics there are some possibilities depending on cost you accept to invest for ...
The ECM8000 mike from Behringer seems to be a good compromise (accuracy/cost) for home work !

http://www.behringerdownload.de/ECM8...00_C_Specs.pdf

[boputnam]

It's best if you measure the response electrically (direct) and not acoustically (using a microphone).

If the crossover is active you can connect directly to it's I/O with an RTA. Send Pink Noise in, and measure the output on the RTA. Use "trace" mode rather than bar mode.

If the crossover is passive, you will need to put a load across it's output to emulate the transducer.

[grumpy]

It's best if you measure the response electrically (direct) and not acoustically (using a microphone).

... if the crossover response is your target ... but yeah... use a "line-level" input
instead of a mic+preamp and do the deed (and hope you don't run out of drive
level steam, or input level headroom).

There's quite a bit to learn on the subject that will be tough to glean solely from an
internet forum. Pick a vendor like ARTA (as has been suggested), TrueRTA, CLIO,
or ... and work your way through the manual. Buy some books.

...down toward the bottom there's an unfinished list of pointers for Measurements:

http://www.audioheritage.org/vbullet...4&postcount=19

[boputnam]

... if the crossover response is your target ...

That's what he asked...

I would like to asses the effectiveness of a given crossover ... to measure frequency response...

:dont-know

Just tryin' to help. I'll leave it to you experts.

[grumpy]

Hey Bo,
I just interpreted the original request as being a lot less focused than asking
how to measure the voltage response of a crossover... No need to pull back from
the table