Tone Calibration; Click Calibration - TDT Medusa4Z User Manual

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Tone Calibration

During calibration, BioSigRZ performs a sweep over the frequency range of interest and

generates a speaker response curve along with a correction curve that would be required to

flatten the response. An FIR filter is calculated from the correction curve and stored in the

contents of the calibration file. When you load the calibration file, that filter is loaded onto the

RZ6 so that any Tone Pips presented through the RZ6 will be calibrated to have a flat response

across all frequencies.

The extension for calibration files is .tcf. All TCF files should be stored at:

C:\TDT\BioSigRZ\TCF

For more information on file types and calibration see the

The

RZ6_Click_Calibration.rcx

stimuli. This file is part of the

downloaded from the TDT website. Download and extract the zipped files to:

C:\TDT\BioSigRZ\RCX

To use this circuit there are a few steps required for setup:

Connect your Calibration Microphone to the In-A port on the RZ6.

If your microphone has a sensitivity of less than 50 mV/Pa, ensure your Amp/BYP switch on

the front of the RZ6 is set to Amp.

Connect your speaker to Out-A or Electrostatic-A (if using Electrostatic-A, be sure the

Electrostatic On/Off switch is in the On position).

Place your microphone in the same position that your subject's ear would be located.

circuit is designed to allow you to calibrate the RZ6 for click

BioSigRZExamples.zip

BioSigRZ

Manual.

zipped example folder, which can be

Calibration | 43

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