In article ,
Phil Allison wrote:
Dave Plowman (Rabid Nutter) wrote:

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Anyone know of (hopefully free) software which will give a real time
display of energy bands?

If say you fed white noise into an amp and the output to the PC, it
gives a graphic of the energy at different frequencies - a sort of
instant frequency response trace.


** That job is much better done with "pink noise" - having equal energy
per octave or part thereof results in a flat spectrum.

True. Hence my using 'say white noise' As the basic principle is the same.

Accurate pink noise sources are not so easy to find and the reading will
take some time to average out.

Perhaps a suitable prog. would generate the required pink noise too.

OTOH, for most audio electronics items, a sine / square wave generator
plus scope is WAAYYYY better than either for response testing.

I want something which gives a quicker way of doing a simple check.

--
*I didn't drive my husband crazy -- I flew him there -- it was faster

Dave Plowman London SW
To e-mail, change noise into sound.