In psychoacoustics, pitch is the subjective perception of the [[fundamental frequency]] of sound. It is the attribute of auditory sensation in terms of which sounds may be ordered on a scale from low to high, or from grave to acute. Pitch is determined by the [[fundamental frequency]] of sound waves, with higher frequency producing a higher pitch and lower frequency producing a lower pitch. However, the perception of pitch is also influenced by other factors such as loudness, harmonics, and context. For example, two sounds with the same frequency but different loudness may be perceived as having different pitches. The perceived pitch of musical tones is basically proportional to the logarithm of the frequency. This is the reason for the description of western musical pitch in terms of [[octave]]s and [[semitone]]s. Several studies showed that the frequency analysis performed by the [[cochlea]] acts as a bank of filters with overlapping bandwidths. This suggested the use of non-linear frequency scales to match the pitch perception, such as the [[Bark frequency scale]] and the [[mel frequency scale]].