Patent ID: 8538565
Filing Date: 2013-09-17
Classification: G11B

Abstract:
1. A music playing apparatus that obtains first output Pulse Code Modulation (PCM) data and second output PCM data that are successive and that plays the first output PCM data and the second output PCM data in this order, the first output PCM data and the second output PCM data being generated by dividing a sound source into portions, and coding and decoding each of the portions, the sound source being in a PCM format, wherein each of both ends of the first output PCM data and the second output PCM data includes: (i) a silent portion that is a section having an output level lower than a predetermined threshold; and (ii) a transition portion that connects a portion corresponding to an end of a corresponding one of the portions of the divided sound source to the silent portion, and said music playing apparatus comprises: a sound and silence determiner configured to determine whether or not each of frames respectively included in the first output PCM data and the second output PCM data is a sound frame including a sample having an output level not lower than the predetermined threshold; a connection point extractor configured to extract a candidate connection point from each of one or more of the sound frames determined by said sound and silence determiner, the candidate connection point being a sample having a largest variation in a lean of a waveform in the PCM format; an end detector configured to identify a boundary between a terminal end of the first output PCM data and the transition portion subsequent to the first output PCM data by setting, as a first connection point, a corresponding one of the candidate connection points included in a last sound frame of the first output PCM data, and to identify a boundary between a front end of the second output PCM data and the transition portion prior to the second output PCM data by setting, as a second connection point, a corresponding one of the candidate connection points included in an initial sound frame of the second output PCM data, the last sound frame and the initial sound frame being included in the sound frames, the terminal end and the front end being included in the ends of the portions; and a tune outputter configured to connect the first output PCM data to the second output PCM data at the first connection point and the second connection point, and to play the connected data.