The invention relates to a frequency following response
signal test
system. The
system is characterized by comprising a computer, a
data acquisition (D / A) card, a multichannel A / D acquisition card, a miniature speaker, a miniature
microphone, a pre-
amplifier,
body surface optical disk electrodes, a
high input-impedance stage, a bioelectricity
amplifier and earplugs. An acoustic meatus
sound pressure monitoring module and a frequency following response
signal extraction testing module are arranged inside the computer. The acoustic meatus
sound pressure monitoring module is used for collecting and recording
sound pressure signals inside acoustic meatuses, and off-line analyzing and
processing collected sound pressure signals, namely comparing the collected sound pressure signals with the preset judging criteria, and getting rid of
signal sections which disagree with acoustic meatus normal sound pressure. A frequency following response signal
test platform is used for collecting FFR signals and off-line analyzing and
processing collected FFR signals, namely pre-screening and
processing the FFR signals which correspond to acoustic meatus normal sound pressure signal segments, and extracting and displaying the FFR signals of a tester are finished. The frequency following response signal test
system can be widely applied to the detection of the FFR signals.