Microphone Input Amp (Ar-Gxmc) - Teac GX-1 Instruction Manual

Integrated recorder

Table of Contents

Amplifiers

Microphone Input Amp (AR-GXMC)

The AR-GXMC is an amp for connecting a microphone used for mea-

surements.

Filters

Weighting Filter

This is an analog weighting filter (A, C) that conforms to IEC TYPE1

class.

Analog Low-Pass Filter

Has an analog low-pass filter to prevent aliasing, with that cutoff fre-

quency automatically determined when the sampling frequency is

selected. The filter is an 8th order Butterworth filter with an attenua-

tion ratio of 48 dB/oct. The low-pass filter is not functional at sam-

pling frequencies of 200 Hz or lower.

Digital Filter

The digital filter using a DSP can attenuate from 40% of the set sam-

pling frequency. The digital filter is not functional at sampling fre-

quencies of 200 kHz, 100 kHz, and 50 kHz.

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