Composite nervous action potential turning curve calibration and detection system
A technology of action potentials and tuning curves, which is applied in the direction of audiometers, etc., can solve the problems that are not involved in the detection of compound nerve action potential tuning curves, and are not involved in the detection of compound nerve action potential tuning curves, so as to ensure accuracy and precision. Easy to build, simple system configuration
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] Such as figure 1 Shown, the present invention comprises a computer 1 that is loaded with windows system, sound card 2, a miniature speaker 3, a miniature microphone 4, a preamplifier 5, an electrode 6, a high impedance input stage 7, a bioelectric amplifier 8 and a soft earplug 9, wherein the miniature speaker 3 and the miniature microphone 4 form an acoustic sensor, in order to isolate the sound in the ear canal from the external sound, the output end of the miniature speaker 3 and the input end of the miniature microphone 4 are inserted into the same Inside the earplug 9.
[0021] Sound card 2 of the present invention adopts the multimedia sound card that can be connected with computer 1 by IEEE1394 interface, such as the present invention adopts the portable multimedia sound card that has 24bit sampling depth, the highest sampling rate 196k...
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