Re: Recommendations for a spectrum analyser sought ...

[Bob Masta <audio@xxxxxxxxxxx>]

Shameless plug:  My Daqarta software runs under Windows and 
uses a standard sound card.  It would seem to meet all your 
requirements except perhaps the bit about "little fiddling 
around":  You do need to perform an initial calibration... 
but I imagine you did on the Ono-Sokki as well. On XP 
systems that's all you need, since Daqarta can deal with 
sound card volume changes on its own.

But on Vista/Win7 systems you may need an additional step 
each time you run, to set the output level if you also use 
the system for other purposes.  (These Windows versions 
"share" the total level range among devices, so you need to 
make sure another device hasn't grabbed some of the total.)

Otherwise, it's pretty much "turn on and go".  The latest 
version 7.00 (out in a couple of days) will have greatly 
expanded macro capabilities, including built-in "mini-apps" 
to measure THD, IMD, etc.  You can use these as-is, or 
customize them for your needs, or use them as examples to 
write your own tests and procedures.  (I'll be glad to help 
with that!)

Best regards,

Bob Masta


======================
On 16 Jul 2012 at 17:59, Stuart Rosen wrote:

> Our lab has had a long and happy use of Ono Sokki spectrum 
> analysers for routine instrumentation tasks like measuring 
> frequency responses, calibrating headphones and checking 
> stimulus properties in experiments. Our latest device, a CF-
> 350Z, is on its last legs, and we wondered if people have 
> recommendations for similar instrumentation.
> 
> One of the things we really like about this instrument (and 
> ones of its type) is that it is very quick to use 
> (essentially turn on and go), with little fiddling about to 
> ensure absolute levels can be accurately measured. And 
> buttons to press rather than typing commands!
> 
> Yours - Stuart
> 
> -- 
> 
> Stuart Rosen, PhD
> Professor of Speech and Hearing Science
> UCL Speech, Hearing and Phonetic Sciences
> 2 Wakefield Street
> London WC1N 1PF, England
> 
> Telephone numbers: 
> *   Office: (+ 44 [0]20) 7679 4077 
> *   Admin: (+ 44 [0]20) 7679 4050 
> *   Internal: ext 24077 
> *   Fax: (+ 44 [0]20) 7679 4238 
> Email: stuart@xxxxxxxxxxxxxx
> Home page: http://www.phon.ucl.ac.uk/home/stuart
> 
> Request an inspection copy of Signals and Systems for 
> Speech and Hearing, 2nd edition by Stuart Rosen & Peter 
> Howell
> http://info.emeraldinsight.com/promo/signals.htm
> 
> 
> 
> 

Bob Masta
 
            D A Q A R T A
Data AcQuisition And Real-Time Analysis
           www.daqarta.com
Scope, Spectrum, Spectrogram, Signal Generator
    Science with your sound card!