Frye FP35 Manual

A SERVICE OF

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General Operation 45

TRMS:

• RMSOUTwillbemeasuredasTRMSwithCompositeorDigitalSpeech.

• ERMSwillbemeasuredwithreal-earpure-tonesatorabove85dBSPL.

• ERMSwillbemeasuredwithcouplerpure-tonesatorabove90dBSPL

when the reference microphone is on.

• TRMSwillbemeasuredwithcouplerpure-tonesatorabove90dBSPL

when the reference microphone is off.

NONE:

• RMSOUTwillnotbemeasuredforCompositeorDigitalSpeech.

• ERMSwillbemeasuredwithreal-earpure-tonesatorabove85dBSPL.

• ERMSwillbemeasuredincouplerpure-tonesatorabove90dBSPL

when the reference microphone is on.

• CRMSwillbemeasuredincouplerpure-tonesatorabove90dBSPL

when the reference microphone is off.

2.5.4 Measuring the RMS of the reference microphone

The Advanced menus of the Coupler Multicurve, Coupler Target, Coupler

EarSim, and real-ear measurement screens contains the REFERENCE STATUS

menu item. This controls the RMS measurement of the reference microphone.

(The USER LEVEL must be set to ADVANCED to change these settings. See

Section 2.3.2 for details.) The following selections are available:

• NONE(default)—TheRMSofthereferencemicrophoneisnotmeasured.

• RMS—TheoverallRMSofthereferencemicrophonewillbedisplayed

when the reference microphone is on.

• FULL—ThereferencesignalqualityaswellastheoverallRMSwillbe

displayed when the reference microphone is on.

When set to RMS or FULL, the REF ON status display in the measurement

screen will be replaced with REF NNdB indicating the overall RMS of the refer-

ence microphone. If the microphones are reversed (see Section 3.8.4), it will be

displayed as “REV NNdB.” If the microphones are split (see Section 3.8.5), the

reference RMS information is not displayed.

When set to FILL, the reference signal quality will be displayed immediately

to the left of the “REF nndB” status in a slightly smaller font. It will appear as

“nnREF NN dB.” If the quality value exceeds 99, a double exclamation “!!” will

be shown, indicating that the data is out of range.

The signal quality information is obtained by determining the worst deviation

in dB from a perfect source signal. For instance, if the source measured by the

reference microphone is perfect (looks exactly as it looked when leveled), except