DewDSPMasterNET
TSignalBrowse Component
Summary
Creates and navigates file overview files.

Unit
FileSignal

Hierarchy
TAnalysis <--TSignalBrowse

Subclasses
None

Description
Use the component to create peak overview files of much bigger signal files. This peak files can be used for quick navigation (browsing) through a few hundred MB long files. With a smart charting tool, a peak file allows you to zoom in on one sample and also zoom out to view the entire file without noticing any delays when drawing. A typical overview file of a 200 MB long wav file is 4 MB long and is created within 5 seconds. The component supports threading, so that you can interrupt the process running in the background. The component also automatically switches between the peak and signal file, depending on the amount of data that you want to read (presumably for screen display).

Properties

 Name  Summary 
ChannelCount  
Data  
Dt  
Increment  
OnProgressUpdate  
PeakFile  
ProgressThread  
RecordNumber  
RecordPosition  
RecordTime  
RecordTimePosition  
SamplingFrequency  
SamplingTime  
SignalFile  
SpanLength  
SpanLimit  
SpanTime  
Threaded  

Methods

 Name  Summary 
CreateBrowseFile  
CreateFileOnCompute  
CreateFileProgressUpdate  
DoProgressUpdate  
InternalUpdate  
IsOverview  
LoadFullRecord  
OpenBrowseFile  

Copyright 2008 Dew Research
http://www.dewresearch.com