| 摘要 |
PROBLEM TO BE SOLVED: To prevent convenience of a user from decreasing while preventing annoyance caused by sound leakage.SOLUTION: A sound reproduction device 10 includes an adjustment unit 16 for adjusting an attenuation characteristic of a high frequency component in a filter 18 depending on a level detected by a noise level detection unit 15 when an in-vehicle state detection unit 13 detects that the sound reproduction device 10 is in a train. The adjustment unit 16, for example, makes the attenuation of the high frequency component in the filter 18 be lower as the level detected by the noise level detection unit 15 is higher. The in-vehicle state detection unit 13, for example, detects that the sound reproduction device 10 is in a train, when a location detected by a GPS unit 11 agrees with a railroad location in map information stored in a memory 12. |
