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!

Step Timing Mode

Controls: Gen Dlg >> Stream >> Smooth TC >> Step
Macro: TmMode=Step

Timing mode is set via the three-button control at the top of the Random / Step Timing Dialog.

In contrast to Slow mode, Step mode does not interpolate but merely repeats each input value for the number of samples (or time) indicated by the Step Size.

For an example of how this can be used, consider the Composer.GEN setup. This setup plays "Oriental"-sounding music, where each note frequency is determined by a randomly selected value from a region of the Expnote.DAT Arb file in Round mode. The Step factor controls the duration of the notes by setting how long each random value should be held. The random values are then used to control the Expnote.DAT selection by means of Phase modulation.

The Step approach can be used to define how long each stage of a test sequence should last. An Arb file in Step mode could provide the sequence of values if a predefined sequence must be repeated exactly. Or one of the Noise sources could provide random values, either to be used directly as the test frequency (or amplitude, etc), or to be used as above with Phase modulation to select a value at random from an Arb sequence.


Macro Notes:

L.1.TmMode=Step or L.1.TmMode=2 sets the Left Stream 1 Timing Mode to Step.


See also Spec Timing Mode, Slow Timing Mode, Random / Step Timing Dialog.

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