1. A method for computer speech recognition, the method comprising: filtering, using a filter, a received acoustic signal into frequency bands of a spectrum; estimating, using a processor, amplitudes of the frequency bands; computing, using a function of an amplitude comparator, coefficients as acoustic features of the frequency bands; wherein the coefficients are quantitative measures of a relationship between amplitudes of frequency bands compared by the comparator; a center value of a respective frequency band of compared frequency bands are separated by a distance less than 800 units on the Mel-frequency scale or less than an equivalent distance on a scale other than the Mel-frequency scale; a 3 dB bandwidth of the frequency bands range between 120 and 240 Mels on the Mel-frequency scale or an equivalent range on another scale; wherein the 3 dB bandwidth is one of measured at half-power points, or is the points where the gain is −3 dB, or 0.707 relative to peak; using the estimated coefficients as acoustic features in a computer speech recognition system; and recognizing an input speech using the computer speech recognition system.