Posts by Cameron Dunn
Calibrating recordings in Raven Pro
What do we mean by calibration? When Raven opens a digital audio file, it sees a series of integer sample values that are proportional to the sound pressure (measured in pascals, Pa or µPa) received by the microphone or hydrophone when the recording was made. The sample values correspond to sound pressures at successive points…
Read MoreBand-Limited Energy Detector (BLED) Diagnostics
Introduction When the Band-Limited Energy Detector (BLED) has a diagnostics feature that can provide invaluable for optimizing detector parameters. This article assumes that you have read and understood the articles in the Detection section of Raven Knowledge Base, especially the articles entitled “Band-Limited Energy Detector (BLED) theory” and “Band-Limited Energy Detector (BLED) Tips”. Discussion BLED has two…
Read More“Open Selection Table” grayed out in File menu
Description You want to open a selection table, but “Open Selection Table” is grayed out in File menu. Discussion You must open a sound before you can open a selection table.
Read More“Could not open selection table”
Description You try to open a selection table and get an error dialog box. Discussion To open a selection table, you must first open the same sound file or sound files that were used to create the selection table. Once you have done that, there are two ways to open your selection table into the sound…
Read MoreSound Window Presets
Introduction When you install Raven Pro the default window preset, “Default 1.3 Power”, causes all sounds to open with a waveform view and a spectrogram view with the “Jet” colormap. If you find yourselves making a number of adjustments every time you open a sound in Raven, window presets can save you a lot of…
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