beautypg.com

Rane THX Room EQ User Manual

Page 9

background image

Home THX Equalization Manual Rev. 1.5

9

Set the measurement time to a minimum of 20 seconds.

F-4

,

F-2

Begin the multiplexing operation.

F-1

,

F-5

1.4)

Real-Time Analysis:

Begin with the Center Channel

Start your pink noise source.

F-7

If using “Wow!” Chapters 9, put the appropriate track on A-B

repeat so that it conveniently cycles automatically. (Note: “Wow!” pink noise chapters will allow for
a maximum measurement interval of 20 seconds, so when using “Wow!” as a noise source the
minimum and maximum measurement intervals are the same.)

Begin your measurement interval.

F-8

IF USING “WOW!” AS THE SOURCE, BE SURE

THAT YOU BEGIN THE INTERVAL IMMEDIATELY AFTER THE CHAPTER HAS REPEATED!
Any blank spot during the measurement interval will corrupt the data.

Analyze your spatially and temporally averaged data.

NOTE: DISPERSION AND AIR ABSORPTION AT HIGHER FREQUENCIES WILL CAUSE A
GENTLE ROLL OFF IN RESPONSE BEGINNING AROUND

6 kHz. THIS IS NORMAL AND DOES

NOT REQUIRE EQUALIZATION. (Fig. 3)

Typical Unequalized LCR Room Response

Frequency Hz

dB

SPL

60

65

70

75

25

40

63

100

160

250

400

630

1000

1600

2500

4000

6300

10000

16000

Fig 3