| 摘要 |
PROBLEM TO BE SOLVED: To relieve the loneliness of a user when a route guiding sound is hardly vocalized like an expressway, a straight road or the like. SOLUTION: When a section not guided by a vocal sound for a predetermined distance (a predetermined period) or more up to the next route guide timing like an expressway or a straight road is determined (Step 103), sound data of a vocal sound in a specific genre irrelative to the route guide is read (Step 104), and the sound thereof is vocalized from a vocal sound uttering device (Step 105). |
