Path: csiph.com!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!buffer1.nntp.dca1.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail NNTP-Posting-Date: Fri, 18 Aug 2017 16:02:49 -0500 Message-ID: <59975612.2468@mindspring.com> Date: Fri, 18 Aug 2017 17:03:14 -0400 From: Ron Hardin X-Mailer: Mozilla 2.02 (WinNT; I) MIME-Version: 1.0 Newsgroups: sci.physics.acoustics Subject: Pitch Perception wtih Wind Noise Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 25 X-Usenet-Provider: http://www.giganews.com NNTP-Posting-Host: 71.50.213.116 X-Trace: sv3-AJYtursPl7kXY0PBz3zQ7zRoXPdEeXpbfg6PnICOJ79MZg0e8eIFpQ6+5m46LxEYiNPBYMoO8O2EGww!3l3W3yDHxJNsQSAJnT57nyUCGj75quiP0Sxdr3dys7X3C1rpC9ioIECP1JFy/C3JgSUuWTlJZyLQ!hwyuASiXiL4= X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 1651 Xref: csiph.com sci.physics.acoustics:628 Listening to 40wpm ARRL code practice files http://www.arrl.org/40-wpm-code-archive with a speaker in my bicycle front basket, I noticed a quarter-tone rise in pitch when a headwind hit my ears. It couldn't be doppler, because if it were I'd soon be listening to the future and it would be a time machine (the cycle counts have to work out). I suspect the low frequency dominated wind noise shifts the perceived peak in the frequency spectrum of the tone upwards. The tone is a sine wave, rather than a modulation. I think with a modulation-pitch there would be no shift. Somebody should verify both. -- rhhardin@mindspring.com On the internet, nobody knows you're a jerk.