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Dear list, I am helping a colleague calibrate his ABR / DPOAE system for testing auditory function in mice. His sound delivery and recording system includes Tucker Davis EC1 speakers, which are coupled to an Etymotic ER10B probe microphone system.
Recently, I measured the frequency response of the system with a Larson Davis microphone that is rated out to 100 kHz. When I remove the ER10B, the output of the speakers matches the expected frequency response based on TDT’s specifications. When the ER10B
is in place, the system output rolls off above 10 kHz. Etymotic designed the ER10B for testing in humans, and it is rated out to 10 kHz; however, I have been made aware of several publications that used this probe for testing in mice. Have any of you successfully
coupled EC1 speakers to an ER10B probe and achieved a flat frequency response out to 32 kHz? If so, I am hoping you will share some insights you have on achieving such a frequency response with this system. Sincerely, Skyler -- Skyler G. Jennings, Ph.D., Au.D. CCC-A Assistant Professor Department of Communication Sciences and Disorders
College of Health University of Utah 390 South 1530 East Suite 1201 BEHS Salt Lake City, UT 84112 801-581-6877 (phone) 801-581-7955 (fax) |