Notification sound generation device
View Patent ↗A notification sound generation device includes a speaker, a controller, a resistor, and a correction unit. The speaker is configured to generate a notification sound to surroundings of a vehicle. The controller is configured to output a sound signal that causes the speaker to generate the notification sound. The resistor has a resistance value corresponding to a correction amount for correcting a sound pressure variation of the speaker or a resistance value corresponding to a sound pressure value of the speaker. The correction unit is configured to correct the sound signal based on a physical quantity correlated with the resistance value of the resistor.
1 . A notification sound generation device comprising:
a speaker configured to generate a notification sound to surroundings of a vehicle;
a controller configured to output a sound signal that causes the speaker to generate the notification sound;
a first resistor having a resistance value corresponding to a correction amount for correcting a sound pressure variation of the speaker; and
a second resistor connected in series with the first resistor, wherein
the controller is further configured to
acquire, as a physical quantity correlated with the resistance value of the first resistor, a voltage value obtained by dividing a predetermined voltage by the first resistor and the second resistor, and specify the correction amount for correcting the sound pressure variation of the speaker based on the voltage value, and
correct the sound signal based on the correction amount that is specified.
2 . A notification sound generation device comprising:
a speaker configured to generate a notification sound to surroundings of a vehicle;
a controller configured to output a sound signal that causes the speaker to generate the notification sound;
a first resistor having a resistance value corresponding to a sound pressure value of the speaker; and
a second resistor connected in series with the first resistor, wherein
the controller is further configured to
acquire, as a physical quantity correlated with the resistance value of the first resistor, a voltage value obtained by dividing a predetermined voltage by the first resistor and the second resistor, and specify the sound pressure value of the speaker based on the voltage value, and
correct the sound signal based on the sound pressure value of the speaker that is specified.