Detail Teaching Old Microphones New Tricks   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 407 no. 8838 (Jun. 2013), page SS20-SS21. Topik: Smartphones; Software; Diagnostics Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.76 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel with the addition of suitable software, microphones can detect more than mere audio signals. They can act as versatile sensors, capable of tuning into signals from inside the body, assessing the social environment and even tracking people's posture and gestures. Researchers have reimagined microphones as multi-talented collectors of information. And because they are built into smartphones that can be taken anywhere, and can acquire new abilities simply by downloading an app, they are being put to a range of unusual and beneficial uses. That natural microphone, the human ear, is finely attuned to picking up certain characteristics in a person's voice. It is not hard, for instance, to infer from a slight change in pitch when a friend might be under stress. Tanzeem Choudhury of Cornell University and her research team are building mobile-phone software that can be trained to do the same thing. John Stankovic of the University of Virginia in Charlottesville is using microphones to capture heartbeats. Researchers in his group are using earphones modified with accelerometers and additional microphones that detect the pulse in arteries in the wearer's ear. This makes it possible to collect information about the wearer's physical state, including heart rate and activity level, which is transmitted to the smartphone via the audio jack. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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