| http://www.w3.org/ns/prov#value | - Also, in the case there is a big change in an average energy of the signal that belongs to each of the sub-frames as compared with the average energy of its adjacent sub-frames when a frame of the given audio input signal is divided into a plural number of temporal sub-frames, it assumes that there has been a rapid change in the sound volume of the audio input signal such as an attack.
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