Abstract: To improve accuracy of an evaluation in an acoustic quality evaluation test performed by comparing an evaluation target sound and a reference sound. A data correction apparatus 3 compares, in a call performed between a near-end terminal 1 and a far-end terminal 2, an evaluation target sound in which a voice output from the near-end terminal 1 is recorded and a reference sound in which a voice spoken by a call partner using the far-end terminal 2 to correct test data used in a listening test for evaluating acoustic quality of the call. A correction target determination unit 31 determines, as a correction target section, a voiced section that does not include the voice of the call partner detected from an acoustic signal representing the reference sound. A correction execution unit 32 updates the correction target section of the acoustic signal representing the reference sound with a non-voice signal predetermined.

Abstract: Disclosed is a navigation device including: a target candidate extracting unit for extracting target candidates located along a guidance route from a map database on a basis of a vehicle position, the guidance route, and intersection information about a target intersection for guidance; a target determining unit for determining a target on a basis of knowledge about target determination from among the target candidates extracted by the target candidate extracting unit; a guidance sentence generating unit for generating a guidance sentence by using the target determined by the target determining unit; and a sound output unit for outputting voice guidance on a basis of the guidance sentence generated by the guidance sentence generating unit.

Abstract: Disclosed is a navigation device including: a target candidate extracting unit for extracting target candidates located along a guidance route from a map database on a basis of a vehicle position, the guidance route, and intersection information about a target intersection for guidance; a target determining unit for determining a target on a basis of knowledge about target determination from among the target candidates extracted by the target candidate extracting unit; a guidance sentence generating unit for generating a guidance sentence by using the target determined by the target determining unit; and a sound output unit for outputting voice guidance on a basis of the guidance sentence generated by the guidance sentence generating unit.