Ø A large anechoic room was employed for
full-range measurements
Ø A computer-controlled turntable was employed
for rotation at fixed angular
steps
Ø The AURORA software was employed for
generating the test signals and
the control pulses for the turntable
Ø ESS
(Exponential Sine Sweep) test signal
Ø The loudspeaker response was measured with a
class-0 B&K microphone,
and a suitable inverse filter applied to
the test signal