DADiSP
Developer(s) | DSP Development Corporation |
---|---|
Initial release | 1987 |
Stable release |
DADiSP 6.7 B01
/ October 29, 2015 |
Development status | Active |
Written in | C, C++, SPL |
Operating system | Microsoft Windows |
Platform | IA-32, x86-64 |
Type | Technical computing |
License | Proprietary commercial software |
Website | DADiSP |
Paradigm | multi-paradigm: imperative, procedural, object-oriented, array |
---|---|
Designed by | Randy Race |
Developer | DSP Development Corporation |
First appeared | late 1990s |
Stable release |
6.7
/ 2015 |
Typing discipline | dynamic, weak |
OS | Microsoft Windows |
Filename extensions | .spl |
Influenced by | |
APL, C, C++ |
DADiSP (Data Analysis and Display, pronounced day-disp) is a numerical computing environment developed by DSP Development Corporation which allows one to display and manipulate data series, matrices and images with an interface similar to a spreadsheet. DADiSP is used in the study of signal processing,[1] numerical analysis, statistical and physiological data processing.[2]
Interface
DADiSP is designed to perform technical data analysis in a spreadsheet like environment. However, unlike a typical business spreadsheet that operates on a table of cells each of which contain single scalar values, a DADiSP Worksheet consists of multiple interrelated windows where each window contains an entire series or multi-column matrix. A window not only stores the data, but also displays the data in several interactive forms, including 2D graphs, XYZ plots, 3D surfaces, images and numeric tables. Like a traditional spreadsheet, the windows are linked such that a change to the data in one window automatically updates all dependent windows both numerically and graphically.[3][4]
Users manipulate data primarily through windows. A DADiSP window is normally referred to by the letter "W" followed by a window number, as in "W1". For example, the formula W1: 1..3
assigns the series values {1, 2, 3} to "W1". The formula W2: W1*W1
sets a second window to compute the square of each value in "W1" such that "W2" will contain the series {1, 4, 9}. If the values of "W1" change to {3, 5, 2, 4}, the values of "W2" automatically update to {9, 25, 4, 16}.
Programming language
DADiSP includes a series based programming language called SPL (Series Processing Language)[5] used to implement custom algorithms. SPL has a C/C++ like syntax and is incrementally compiled into intermediate bytecode, which is executed by a virtual machine. SPL supports both standard variables assigned with =
and "hot" variables assigned with :=
. For example, the statement A = 1..3
assigns the series {1, 2, 3} to the standard variable "A". The square of the values can be assigned with B = A * A
. Variable "B" contains the series {1, 3, 9}. If "A" changes, "B" does not change because "B" preserves the values as assigned without regard to the future state of "A". However, the statement A := 1..3
creates a "hot" variable. A hot variable is analogous to a window, except hot variables do not display their data. The assignment B := A * A
computes the square of the values of "A" as before, but now if "A" changes, "B" automatically updates. Setting A = {3, 5, 2, 4}
causes "B" to automatically update with {9, 25, 4, 16}.
History
DADiSP was originally developed in the early 1980s as part of a research project at MIT to explore the aerodynamics of Formula One racing cars.[4] The original goal of the project was to enable researchers to quickly explore data analysis algorithms without the need for traditional programming.
Version history
- DADiSP 6.7 B01,[6] Oct 2015
- DADiSP 6.5 B05,[7] Dec 2012
- DADiSP 6.5,[8] May 2010
- DADiSP 6.0, Sep 2002
- DADiSP 5.0, Oct 2000
- DADiSP 4.1, Dec 1997
- DADiSP 4.0, Jul 1995
- DADiSP 3.01, Feb 1993
- DADiSP 2.0,[9] Feb 1992
- DADiSP 1.05, May 1989
- DADiSP 1.03, Apr 1987
See also
References
- ↑ Mahmood Nahvi. "Real-Time Digital Signal Processing Design Projects in an Undergraduate DSP Course and Laboratory" (PDF). Texas Instruments DSPS Fest, 1999.
- ↑ "User Interactive Software for Analysis of Human Physiological Data". Nasa Tech Briefs, December 2006.
- ↑ "DADiSP Makes Complex Data Analysis Faster and Easier". DSP Development Corp. Archived from the original on 2014-09-01. Retrieved March 2014. Check date values in:
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(help) - 1 2 "DADiSP 2002 Escape from the cell block". Scientific Computing World. Retrieved August 2003. Check date values in:
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(help) - ↑ "DADiSP SPL vs. MATLAB". DSP Development Corp. Archived from the original on 2015-01-05. Retrieved March 2014. Check date values in:
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(help) - ↑ "DADiSP 6.7 B01 Release Notes". DSP Development Corp. Archived from the original on 2016-03-31. Retrieved October 2015. Check date values in:
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(help) - ↑ "DADiSP 6.5 B05 Release Notes". DSP Development Corp. Retrieved March 2014. Check date values in:
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(help) - ↑ "DADiSP 6.5". Scientific Computing World. Retrieved June 2010. Check date values in:
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(help) - ↑ DADiSP 2.0 Wiley Online Library, The Professional Geographer Volume 44, Issue 1, pages 103–108, February 1992
Further reading
- Allen Brown, Zhang Jun: First Course In Digital Signal Processing Using DADiSP, Abramis, ISBN 9781845495022
- Charles Stephen Lessard: Signal Processing of Random Physiological Signals (Google eBook), Morgan & Claypool Publishers
External links
- DSP Development Corporation (DADiSP vendor)
- DADiSP Online Help
- DADiSP Tutorials
- Getting Started with DADiSP
- Introduction to DADiSP