hearing travelling wave or resonance听到行波共振.pdfVIP

Open access, freely available online Journal Club Hearing: Travelling Wave or Resonance? Andrew Bell itting in the enveloping quietness (Gold 1948). Still cited widely today, proposed that the ear operated like a of an anechoic chamber, or other this paper deals with the basic question regenerative receiver, much like some quiet spot, you soon become of how the cochlea works to analyse radio receivers of the time that used S aware that the ear makes its own sound into its component frequencies. positive feedback to amplify a signal distinctive sounds. Whistling, buzzing, Two prominent theories—sympathetic before it was detected. Regenerative hissing, perhaps a chiming chorus of resonance, proposed by Hermann receivers were simple—one could be many tones—such continuous sounds Helmholtz (1885), and travelling built with a single vacuum tube—and seem remarkably nonbiological to my waves, proposed by Georg von Békésy they provided high sensitivity and perception, more in the realm of the (1960)—need to be distinguished narrow bandwidth. A drawback, electronic. (Figure 1). In a nutshell, are there tiny, however, was that, if provoked, the Even more remarkable, put a independently tuned elements in the circuit could ‘take off’, producing an sensitive microphone in the ear cochlea, like the discrete strings of a unwanted whistle. Gold connected this canal and you will usually pick up an piano, that are se