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New Computational Technique Advances Color 3D Printing Process

Columbia Engineering professor Changxi Zheng has developed a technique that enables hydrographic printing, a widely used industrial method for transferring color inks on a thin film to the surface of 3D objects, to color these surfaces with the most precise alignment ever attained. His new computational method, which simulates the printing process and predicts color film distortion during hydrographic immersion, generates a colored film that guarantees exact alignment of the surface textures to the object.

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From Reverberating Chaos to Concert Halls, Good Acoustics is Culturally Subjective

Play a flute in Carnegie Hall, and the tone will resonate and fill the space. Play that same flute in the Grand Canyon, and the sound waves will crash against the rock walls, folding back in sonic chaos. The disparity is clear – to the modern listener, the instrument belongs in an auditorium. "Distinct echoes would be totally unforgivable in today's performance spaces," says Steven J. Waller, an archaeo-acoustician. “But, in the past, people sought echoes."

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All Sounds Made Equal in Melancholy

Psychoacoustics identifies five basic types of emotional speech: angry, fearful, happy, sad and neutral. In order to fully understand what’s happening with speech perception, a research team at the University of Texas at Austin studied how depressed individuals perceive these different kinds of emotional speech in multi-tonal environments. They will present their findings at the 169th ASA meeting, held this week in Pittsburgh.

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Bat-Inspired Dynamic Sonar Unveiled at Acoustical Society

Virginia Tech researchers have developed a prototype of a dynamic sonar system inspired by horseshoe bats. The prototype was presented Wednesday (May 20) at the Acoustical Society of America meeting in Pittsburgh.

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Robotic Sonar System Inspired by Bats

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Engineers at Virginia Tech have taken the first steps toward building a novel dynamic sonar system inspired by horseshoe bats that could be more efficient and take up less space than current man-made sonar arrays. They are presenting a prototype of their "dynamic biomimetic sonar" at the 169th Meeting of the Acoustical Society of America held May 18-22, 2015 in Pittsburgh.

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Ultrasonic Production of Skimmed Milk

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Recently, scientists from Swinburne University of Technology in Australia and the Commonwealth Scientific and Industrial Research Organization (CSIRO) have jointly demonstrated cream separation from natural whole milk at liter-scales for the first time using ultrasonic standing waves -- a novel, fast and nondestructive separation technique typically used only in small-scale settings.

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"Natural" Sounds Improves Mood and Productivity, Study Finds

Playing natural sounds such as flowing water in offices could boosts worker moods and improve cognitive abilities in addition to providing speech privacy, according to a new study from researchers at Rensselaer Polytechnic Institute. They will present the results of their experiment at the 169th Meeting of the Acoustical Society of America, held May 18-22, 2015 in Pittsburgh.

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Secrets of Baby Talk: Why Mothers Say Coo While Fathers Stay Cool

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Babytalk, which includes higher-pitched voices and a wider range of pitches, is sometimes known as "motherese," partly because most research on parent-child interactions has traditionally focused on the mother's role. Scientists study this common behavior because they want to understand what role such speech patterns play in children’s language acquisition. But in an era of increased paternal involvement, researchers are investigating whether fathers modify their speech in the same way mothers do.

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Online Press Conferences Tomorrow: Baby Talk, Bat-inspired Sonar, the Neuroscience of Hearing Loss and the Effects of Noise on Health

WHAT: Press Event Webcasts | Research from the ASA 169th Meeting DATE: Tuesday, May 19 TIME: "Noise and Health" @ 11:00 a.m. EDT; "New Discoveries in Acoustics" @ 2:00 p.m. EDT ONLINE REGISTRATION: http://www.aipwebcasting.com ONSITE LOCATION: Smithfield Room, Wyndham Grand Pittsburgh Downtown Hotel

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Singing Spiders, Bleating Pandas, Better Headphones, Blood Vessels Fabricated With Ultrasound, Building Acoustics in Ancient Greek Theaters, the Health Hazards of Noise and More

Wind turbines causing cluckus interruptus in prairie chickens, tranquility at a conservation center, better blood pressure monitors with wearables, and a vibrational analysis of graphite tennis rackets are just some of the highlights from the lay-language versions of papers to be presented at the 169th ASA meeting, held May 18-22 in Pittsburgh. Summaries are posted online in the ASA’s Pressroom; many contain sounds, images, and videos. The entire collection can be found at http://acoustics.org/current-meeting.