Save All Selections In Current Table

Introduction One of the most powerful way of making sound clips in Raven is to save all the selection in your current selection table as sound clips, that is, small sound files, one for each of the selections in your selection table. This article will discuss how to accomplish this, including options for naming the…

Read More

Signal-to-Noise Ratio (SNR) – NIST Quick method

INTRODUCTION Raven Pro 1.6.1 has a new measurement named “SNR NIST Quick”. DISCUSSION This measurement represents a crude approximation of SNR and was included for the convenience of those who understand it. NIST does not endorse its use. For details, see https://labrosa.ee.columbia.edu/~dpwe/tmp/nist/doc/stnr.txt.    

Read More

Band Filter

Introduction Raven allows you to filter out or filter around a selected frequency band in a sound. When you filter out a frequency band, frequency components in that band are removed from the signal. When you filter around a frequency band, frequency components outside of that band are removed, leaving only the frequencies in the…

Read More

Selection Review and Annotation

Introduction The Selection Review and Annotation feature is optimized for efficiently annotating large numbers of existing Raven selections using a user-defined vocabulary. This feature displays selections as postage stamps (that is, small spectrograms) in a grid. With one keystroke, the user can add annotations to one or more annotation columns for that selection and move…

Read More