Daqarta
Data AcQuisition And Real-Time Analysis
Scope - Spectrum - Spectrogram - Signal Generator
Software for Windows
Science with your Sound Card!
The following is from the Daqarta Help system:

Features:

Oscilloscope

Spectrum Analyzer

8-Channel
Signal Generator

(Absolutely FREE!)

Spectrogram

Pitch Tracker

Pitch-to-MIDI

DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Period
    Event
    Spectral Event

    Temperature
    Pressure
    MHz Frequencies

Data Logger

Waveform Averager

Histogram

Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls

Auto-Calibration

Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording

Accessibility

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Automotive

Product test

Contact us about
your application!

Sound Level Meter Channel (L.In, R.In, L.Out, R.Out)

Controls: Options >> Sound Level Meter >> L.In-R.Out
Macro: SPLch

These four radio pushbuttons select the channel to be measured.

The Input line that has been selected for each Input channel must have been previously calibrated, as described in the Sound Level Meter overview.

You may also select an Output channel to directly display the SPL produced by a calibrated speaker or other transducer under specific test conditions (fixed distance and orientation, for example).


Macro Notes:

Use SPLch=LI to select Left Input, RI for Right Input, LO for Left Output, and RO for Right Output. Alternatively, you can use numeric values, variables, or expressions instead of mnemonic names:

    0 = LI
    1 = RI
    2 = LO
    3 = RO

Note that if you use a mnemonic in an {\b IF} test, it must be in quotes: IF.SPLch="LI".

Note that the Sound Level Meter only allows you to set channels that are currently active, and shows any others as disabled (grayed out). If you attempt to select a channel that is inactive, the macro will abort with an error message indicating that the control is disabled. However, if you set an inactive channel before opening the Sound Level Meter, the command may be accepted at that time (since the meter has not yet disabled the button). That channel will be superceded by an active channel when the meter is later opened.


See also Sound Level Meter

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