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18.09.2008 Angelo Farina
Loudspeaker
as sound source
§A loudspeaker is fed with a special test signal
x(t), while a
microphone records the room response
§A proper
deconvolution technique is required for retrieving the impulse response h(t) from the recorded signal y(t)
Portable PC
with 4
-
channels
sound board
Original
Room
SoundField
Microphone
B
-
format 4
-
channels
signal
(WXYZ)
Measurement
of B
-
format
Impulse
Responses
MLS
excitation signal
Portable PC
with
additional
sound card
Room
Microphone
Output
signal y
Measurement
of Room
Impulse
Response
MLS test
signal x
Loudspeaker