[LogoShip]

Home

Free Download

Purchase Daqarta

Daqarta Features

Screen Shots

Help Contents

Help Index

Revision History

Articles by the Author

About Interstellar Research

Daqarta for DOS
(Legacy systems only)

Contact Us
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.
Previous Next
File Info - Samples

Controls: File Menu >> File Info >> Samples

This is the number of samples per channel in the file. For most files, this will be the number of sample periods or time points in the data set. For single-screen files this will usually be 1024 samples. DDiskx files will be at least 1024 samples and usually much more.

Wave averages are always 1024 samples, even though each file sample is the Frames total of individual samples. (The data are displayed as averages by dividing each file sample by the total Frames.)

The exception is spectrum averages. These are always listed here as 512 samples, but each "sample" is really one spectral line. There are 512 spectral lines produced from 1024 original waveform time samples, and the spectral lines from successive averager frames are summed to produce the file values.

See also File Menu, Open Existing Data File, File Info Dialog

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Vehicle pass-by noise

Product test

Contact us about
your application!

GO:

Questions? Comments? Contact us!

We respond to ALL inquiries, typically within 24 hrs.
INTERSTELLAR RESEARCH:
25 Years of Innovative Instrumentation
© Copyright 2007 - 2008 by Interstellar Research
All rights reserved