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ALDAS user's manualThe Acoustic Laboratory Data Acquisition System (ALDAS) is an inexpensive, transportable means to digitize and analyze data. The system is based on the Macintosh 2 family of computers, with internal analog-to-digital boards providing four channels of simultaneous data acquisition at rates up to 50,000 samples/sec. The ALDAS software package, written for use with rotorcraft acoustics, performs automatic acoustic calibration of channels, data display, two types of cycle averaging, and spectral amplitude analysis. The program can use data obtained from internal analog-to-digital conversion, or discrete external data imported in ASCII format. All aspects of ALDAS can be improved as new hardware becomes available and new features are introduced into the code.
Document ID
19910015443
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Watts, Michael E. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1991
Subject Category
Computer Programming And Software
Report/Patent Number
A-90182
NASA-TM-102831
NAS 1.15:102831
Accession Number
91N24757
Funding Number(s)
PROJECT: RTOP 532-06-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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