Mel scale melody scale Fromhttpsen.wikipedia.org/wiki/melscale Measure relative strength in perception of different frequencies The mel scale, named by stevens, Volkmann, and Newman in 1937, 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. As a result, four octaves on the hertz scale above 500 Hz are judged to comprise about two octaves on the mel scale The name mel comes from the word melody to indicate that the scale is based on pitch comparisons Feature extraction v 9aMel scale (Melody scale) From https://en.wikipedia.org/wiki/Mel_scale • Measure relative strength in perception of different frequencies. • The melscale, named by Stevens, Volkmann, and Newman in 1937,[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. As a result, four octaves on the hertz scale above 500 Hz are judged to comprise about two octaves on the mel scale. The name mel comes from the word melody to indicate that the scale is based on pitch comparisons. Feature extraction, v.9a 12