RTA Tuning: White or Pink noise and why?

[CustomSpeakerPods]

I'm sure the simple answer is Pink noise, but why is this the case? My reasoning/understanding is this:
Music is produced to a 'pink' form (more energy in the lower frequencies). Shouldn't speakers be tuned using white noise (equal energy per frequency) so that the music is generated as it was produced? Or is there something I don't understand?
I came to this confusion by plotting frequency analysis of Pink noise, white noise and music using Audacity. Pink noise and music follow the same dB/Hz slope while white noise is full dB at all Hz.

Thanks, B

 

[Blumlein 88]

Most RTAs are octave based or fractions of octaves. So when plotted with pink noise you get a flat line. Pink is equal energy per octave. White noise plotted on octaves would be a rising line as each octave is twice as large and would have twice the energy with white noise.

If you are using FFTs each FFT bin is the same size so white noise gives a flat line.

Plus using pink noise is safer for the tweeters as it has less energy at the high frequencies and it is much less annoying/dangerous for your ears for the same reason.

 

[CustomSpeakerPods]

Most RTAs are octave based or fractions of octaves. So when plotted with pink noise you get a flat line. Pink is equal energy per octave.

If you are using FFTs each FFT bin is the same size so white noise gives a flat line.

Plus using pink noise is safer for the tweeters as it has less energy at the high frequencies and it is much less annoying/dangerous for your ears for the same reason.

Excellent explanation. Follow-up question: What type of sweep does REW use when performing a measurement?

 

[Blumlein 88]

REW uses a log sweep.

Getting Started with REW

"A logarithmic sweep is one that takes the same time to double in frequency. It takes the same time to go from 40 to 80Hz or 4kHz to 8kHz as from 20 to 40Hz."

REW can also switch over to an RTA and you can use pink noise.

 

[CustomSpeakerPods]

REW uses a log sweep.

Getting Started with REW

"A logarithmic sweep is one that takes the same time to double in frequency. It takes the same time to go from 40 to 80Hz or 4kHz to 8kHz as from 20 to 40Hz."

REW can also switch over to an RTA and you can use pink noise.

Log sweep is where my confusion started. I exported the linear sweep and analyzed it in Audacity. This would be a bad sweep to run through a system.