Method and apparatus for adjusting the cadence of music on a personal audio device

Abstract

Disclosed is an audio device that adjusts the cadence of played songs. All songs in a playlist may be adjusted to match the cadence of a particular song. First, the desired cadence of a reference song is determined by low pass filtering a digital representation of the reference song and determining the period (T) of the back beat of the reference song. The cadence of subsequent songs is then determined by low pass filtering digital representations of the subsequent songs and determining the period (T) of the back beat of the subsequent songs. An adjustment of the period (T) of the subsequent songs is then determined such that the adjustment of the period (T) of the subsequent songs results in the subsequent songs having the desired cadence (i.e., the cadence of the reference song). The period (T) of the back beat of the subsequent songs are then adjusted.

Dependencies are inferred from the claim text.