Information processing device and method thereof

An information processing device for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key comprising:

• a key sound achieving processor unit for achieving key audio data for extracting the retrieval key;
• an acoustic variation point detecting processor unit for converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• and
• a retrieval key generating processor unit for determining a retrieval key section on the basis of at least one variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing device for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key comprising:

• a key audio and video achieving processor unit for achieving key audio and video data for extracting the retrieval key;
• a key sound extracting processor unit for extracting key audio data from the key audio and video data;
• an acoustic variation point detecting processor unit for converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• an image variation point detecting processor unit for converting image data in the key audio and video data to an image feature parameter and detecting as a variation point a time at which variation of the image feature parameter thus converted appears;
• and
• a retrieval key generating processor unit for determining a retrieval key section on the basis of at least one sound-based variation point or image-based variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key comprising:

• achieving key audio and video data for extracting the retrieval key;
• extracting key audio data from the key audio and video data;
• converting image data in the key audio and video data to an image feature parameter and detecting as a variation point a time at which variation of the image feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key comprising:

• achieving key audio data for extracting the retrieval key;
• converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key comprising:

• achieving key audio and video data for extracting the retrieval key;
• extracting key audio data from the key audio and video data;
• converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• converting image data in the key audio and video data to an image feature parameter and detecting as a variation point a time at which variation of the image feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one sound-based variation point or image-based variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing program product for making a computer implement an information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key, the program product comprising the instructions of:

• achieving key audio and video data for extracting the retrieval key;
• extracting key audio data from the key audio and video data;
• converting image data in the key audio and video data to an image feature parameter and detecting as a variation point a time at which variation of the image feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing program product for making a computer implement an information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key, the program product comprising the instructions of:

• achieving key audio data for extracting the retrieval key;
• converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.

An information processing program product for making a computer implement an information processing method for retrieving retrieval target audio data or retrieval target audio and video data to be retrieved by a retrieval key, the program product comprising the instructions of:

• achieving key audio and video data for extracting the retrieval key;
• extracting key audio data from the key audio and video data;
• converting the key audio data to an acoustic feature parameter and detecting as a variation point a time at which variation of the acoustic feature parameter thus converted appears;
• converting image data in the key audio and video data to an image feature parameter and detecting as a variation point a time at which variation of the image feature parameter thus converted appears;
• and
• determining a retrieval key section on the basis of at least one sound-based variation point or image-based variation point and generating a retrieval key on the basis of the portion corresponding to the retrieval key section in the key audio data.