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!

Burst Train Lag


Macro: TrainLag

This is the delay before the first full burst cycle (Lag, Rise, High, Fall, and Cycle) of a Burst Train begins. It is only given once when the output is turned on, or when a change to a control causes the output to be restarted. It allows overall alignment of burst trains on different Streams or output channels.

For example, suppose you want to create alternating Left and Right bursts, with the Rise of one channel exactly overlapping the Fall of the other so that if the two channels are combined they will produce a steady continuous tone. To do this, you would set all Rise and Fall values equal, and set both High values to the desired burst duration. In order that the silent portions exactly match the High portions, set Burst Cycle values to Rise plus Fall plus two times the High value.

Now you have two identical burst trains, exactly overlapping. If you set Train Lag on one of them to the sum of Rise plus High, that channel will start its initial Rise just as the other is starting its initial Fall, and they will keep that time alignment on subsequent bursts.


Macro Notes:

L.1.TrainLag=100 sets Left Stream 1 Train Lag to 100 samples, assuming Smpl mode. It will set 100 seconds in sec mode. To be safe, use a SmplSec command to set the desired mode before using this command.

L.1.TrainLag=>1 increments and L.1.TrainLag=>-1 decrements by one sample, even in sec mode. Only +/-1 sample steps are allowed.


See also Burst Overview, Burst Dialog Controls

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