Thanks for the explanation Dean and Laura, and to everyone else for chiming in. I haven’t made spectrograms of short call notes for publication since the Flight Call Guide back in 2001. I used Canary back then and the method for generating spectrograms must have been different because there was no such delay apparent.
Bill From: Bill Evans Sent: Thursday, January 22, 2015 7:40 AM To: Night Flight Call List Subject: [nfc-l] missing first few milliseconds of spectrograms made in Raven When I open a short night flight call wav file in Raven, the waveform window begins at 0 sec but the accompanying spectrogram window doesn't begin at zero -- it begins after a few milliseconds. See attached example. It’s not something that one would note unless they are working with very short sound files, and perhaps wish to use such a short spectrogram in a publication. Anyone else notice this possible bug in Raven? Bill Evans -- NFC-L List Info: Welcome and Basics Rules and Information Subscribe, Configuration and Leave Archives: The Mail Archive Surfbirds BirdingOnThe.Net Please submit your observations to eBird! -- -- NFC-L List Info: http://www.NortheastBirding.com/NFC_WELCOME http://www.NortheastBirding.com/NFC_RULES http://www.NortheastBirding.com/NFC-L_SubscribeConfigurationLeave.htm ARCHIVES: 1) http://www.mail-archive.com/nfc-l@cornell.edu/maillist.html 2) http://www.surfbirds.com/birdingmail/Group/NFC-L 3) http://birdingonthe.net/mailinglists/NFCL.html Please submit your observations to eBird: http://ebird.org/content/ebird/ --