Pioneer Corporation

Koji Ogura

Masahiko Miyashita

Hiroyasu Eguchi

Kensuke Chiba

Harui Koizumi

Gen Inoshita

Takeaki Funada

Nobuo Ohyama

Chihaya Oga

Tetsuhiro Hase

Katsuhiko Goda

Audio information is read out of a recording medium which records musical pieces as audio information. The audio information read out is processed to detect BPM values and positions of beats in the musical piece. A musical piece is reproduced from the recording medium by reproducing audio information in accordance with the detected BPM values and positions of beats. The BPM value indicates the tempo of a musical piece, and the beat indicates a strength of a sound which repeatedly appears in each musical piece. When the audio information is reproduced in accordance with the detected BPM values and positions of beats, the musical piece is reproduced at the correct tempo and beats without giving an unnatural feeling to the listener.

Audio information reproduction device and audio information reproduction system

An information playback apparatus is provided, which can provide a sound which sounds natural by controlling an abrupt change in a tempo in the case of random access playback. When a cue point is registered, audio data which makes seamless playback possible is stored into a cue point memory, and further, the beat density of a playback sound being played when the cue point is registered is measured and stored. When the cue point is specified to start random access playback later, a ratio of the beat density (&#x3b1;&#xd7;DBPM) of a playback sound being played when the cue point is specified and the beat density (DBPMreg) stored in advance is found. Then, the random access playback is started after the beat density of a playback sound to be played after random access playback is started is corrected to be equal to the beat density when a start of the random access playback is specified.

Information playback apparatus

An information playback apparatus which can perform random access playback, reverse playback, shuttle playback, etc. quickly and seamlessly. A signal processing unit stores audio data read out from a disc into a buffer memory, and performs information processing for audio playback based on the audio data in the buffer memory. Audio data of certain time durations respectively corresponding to a past and a future with respect to the audio data currently being subjected to audio playback is replenished and stored into the buffer memory. When a jog dial is manipulated, reverse playback, shuttle playback, etc. are performed quickly and seamlessly based on the audio data in the buffer memory. Audio data of certain time durations respectively corresponding to a past and a future with respect to a cue point is also stored into a cue point memory, and when a command to start random access playback is given and/or the jog dial is manipulated, quick random access playback and seamless reverse playback, shuttle playback, etc. are performed based on the audio data in the cue point memory.

Information reproducing apparatus capable of performing quick access playback

Growing community of inventors

Saitama-ken, Japan

Koji Ogura