stereo vs mono sourced pink noise

[c-post]

In running pink noise with an SPL meter, I'm trying to get all 5 speakers to calibrate at the same 85db level. However, I'm noticing that pink noise reads much louder in the center channel, DEPENDING on whether the pink noise SOURCE is a MONO or STEREO protools track. Inotherwords, I pan the pink noise from the stereo track around the surround field to get this result.

Inotherwords ~ A protools stereo track (both channels locked together) panned to the center reads double loud than panned to either the left or right channel. I am generally leaving the C % control at 100 percent. Can anyone explain what I am doing wrong?

thx

c-post

[tom_lowe]

Originally Posted by c-post

In running pink noise with an SPL meter, I'm trying to get all 5 speakers to calibrate at the same 85db level. However, I'm noticing that pink noise reads much louder in the center channel, DEPENDING on whether the pink noise SOURCE is a MONO or STEREO protools track. Inotherwords, I pan the pink noise from the stereo track around the surround field to get this result.

Inotherwords ~ A protools stereo track (both channels locked together) panned to the center reads double loud than panned to either the left or right channel. I am generally leaving the C % control at 100 percent. Can anyone explain what I am doing wrong?

thx

c-post

Pink noise should be a mono track for calibration. Don't use the built-in PT noise generator either.

[c-post]

OK, I've downloaded dolby pink and will use mono source track only for calibration in 5 speakers.

thx

c-post

[druth77]

http://duc.avid.com/showthread.php?t=87830