flâneur

Mel scale - Wikipedia

en.wikipedia.org · 1,843 words · saved by 1 readers

Join us to Celebrate Women! Help close the knowledge gender gap on Wikimedia this March: click here and see what you can do. The mel scale (after the word melody)[1] is a perceptual scale of pitches judged by listeners to be equal in distance from one another. The reference point between this scale and normal frequency measurement is defined by assigning a perceptual pitch of 1000 mels to a 1000 Hz tone, 40 dB above the listener's threshold. Above about 500 Hz, increasingly large intervals are judged by listeners to produce equal pitch increments. A formula (O'Shaughnessy 1987) to convert f hertz into m mels is:[2] The formula from O'Shaughnessy's book can be expressed with different logarithmic bases: The corresponding inverse expressions are: There were published curves and tables on psychophysical pitch scales since Steinberg's 1937[3] curves based on just-noticeable differences of pitch. More curves soon followed in Fletcher and Munson's 1937[4] and Fletcher's 1938[5] and Stevens'

Mel scale - Wikipedia Jump to content From Wikipedia, the free encyclopedia Conceptual scale Plots of pitch mel scale versus hertz scale A440 Play ⓘ . 440 Hz = 549.64 mels The mel scale (after the word melody ) [ 1 ] is a perceptual scale of pitches judged by listeners to be equal in distance from one another. The reference point between this scale and normal frequency measurement is defined by assigning a perceptual pitch of 1000 mels to a 1000 Hz tone, 40 dB above the listener's threshold. Above about 500 Hz, increasingly large intervals are judged by listeners to produce equal pitch increme

related reading