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·
X-curve
- An intentional roll-off in a theatrical system's
playback response above ~2kHz at 3dB per octave. A
modern convention (standardized between 1975 and 1984)
specified in ISO Bulletin 2969, it is measured at the
rerecording position in a dubbing stage or two-thirds of
the way back in a movie theater. Pink noise should
measure flat to 2kHz and then should roll-off above
that. Home THX processors add this roll-off, when
engaged, so that a home video soundtrack will have the
same response as it would in a theatrical setting.
·
Xmax
- The
maximum linear cone excursion of a driver, measured in
inches or millimeters. |
