FOD Fireball’s Observations of the Day May 16th through 18th 2018

Fireball Saying of the Day

Be strong, I whispered to my WiFi signal.

 

Yanny vs. Laurel

I hear Lauel!  In the tremendous rush to understand the single greatest topic of conversation since that time nobody knew whether a dress was blue and black or actually white and goldPopular Science has taken up the cause. Brad Story is a professor of speech, language, and hearing sciences at the University of Arizona, and he did a quick analysis of the waveform. That first waveform is of the actual recording, which features the primary acoustic features of the “l” and “r” sounds. That leads Story to believe that the voice is really saying “laurel.” The fuzzier image below shows that the recording is of the third resonance of the vocal tract. As your vocal tract changes shape to form different sounds, it produces specific resonances, or natural vibrational frequencies. It’s these resonances that encode language within a sound wave (and thus how you can analyze a waveform and determine speech sounds).  He also recorded himself saying both words to demonstrate how the waveforms vary. You can see (though maybe only with the added arrows and highlighting) that the acoustic features match up between the actual video recording and the recording of Story saying “laurel.” It starts relatively high for the “l” sound, then drops for the “r” and goes back up high for the second “l.” Story explains that the “yanny” sound follows a similar path, just not with quite the same acoustic features. That wave also goes high-low-high, but the whole thing is shifted into the second resonance—not the third.  Britt Yazel, a researcher at the UC Davis Center for Mind and Brain, agrees. “I honestly think after looking at the spectrograms and playing with some filters that this is just the word “Laurel” with some high frequency artifacts overlaying it,” he says. At first he thought it was two overlaid voices, but then he started cleaning up the audio a bit. Now he thinks that the overlaid frequencies above 4.5 kHz are what sound like “yanny” to some people.  So what started off as just a fun thing has degenerated into just way way too much information.

 

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FOD Fireball’s Observations of the Day August 28 through 31, 2017

 

Marines and Navy Heading to Gulf Coast For Possible Disaster Relief

In the wake of the ever increasing destruction caused by Hurricane Harvey, the Marine Times is reporting, nearly 700 Marines will head toward the Gulf Coast Thursday aboard the amphibious assault ship USS Kearsarge in case they are tasked with helping rescue Texas residents who have been slammed by historic flooding caused by Hurricane Harvey.  The Kearsarge and the dock landing ship Oak Hill are both scheduled to get underway from ports in Virginia, Fleet Forces Command announced on Wednesday.  “These ships are capable of providing medical support, maritime civil affairs, maritime security, expeditionary logistic support, medium and heavy lift air support, and bring a diverse capability including assessment and security,” a news release from the command says. The Marines will also be able to purify water, distribute relief supplies, conduct aerial reconnaissance and provide engineering capabilities, a II MEF news release says.  “Marines conduct regular training and have gained real-world experience with Humanitarian Assistance/Disaster Relief from relief efforts across the globe,” the news release says.

Continue reading “FOD Fireball’s Observations of the Day August 28 through 31, 2017”