HEAR 657 Term 4 Chapter 2

Which statement(s) is/are true about testbox measures?

• They tell you how well the HA is meeting prescription targets.

• They tell you if the HA is performing like the manufacturer said it would.

• You should use an HA-1 coupler with BTEs.

• You should use a CIC coupler for CICs.

Which statement(s) is/are true of the ANSI standard for testbox measurements?

• The HFA frequencies are 1000, 1500, and 2000 Hz.

• The peak (max) OSPL90 should not be > 3 dB from the specs.

• The THD at 500 Hz should not be >3% of the specs.

• The EIN should not be > 3 dB of the specs.

Which statement(s) is/are true of real-ear (probe microphone) measurements?

• They tell you how well the HA is meeting the prescription targets.

• The tell you if the HA is performing like the manufacturer said it would.

• They should be done in a sound-isolating booth.

• You need to calibrate before each measurement.

Which real-ear measurement represents the natural amplification provided by the ear canal?

• REAR

• REUG

• REIG

• REUR

Which component(s) below is/are part of CORFIG?

• Unaided gain of client's ear

• Gain of the HA

• Residual volume effects of coupler

• Microphone location

Which statement(s) is/are true about this image?

• The HA gain needs to be decreased to hit targets.

• The HA gain needs to be increased to hit targets.

• The HA is hitting targets well enough.

• You can't tell from this image how well the HA is hitting targets.