Patent ID: 9251849
Filing Date: 2016-02-02
CPC Classification: G11B,H04N

Claim Text:
1. A multimedia processing apparatus, comprising: an interface, being configured to receive an audio stream continuously, wherein the audio stream is defined with a time line; and a processing unit, being electrically connected to the interface and configured to perform the following operations every a first predetermined time interval: (a) deciding a first portion of the audio stream with reference to a time instant of the time line, (b) calculating an energy of the first portion of the audio stream, and (c) calculating a difference between the energy and a previous energy; wherein the time instants for deciding the first portions of the audio stream are different and the processing unit is further configured to decide a plurality of second portions of the audio stream and decide a beat point for each of the second portions by selecting the time instant that corresponds to the maximum difference within the second portion.