VEHICLE APPROACH WARNING APPARATUS

摘要

A vehicle approach warning apparatus outputting a warning sound signal for outputting a warning sound, and generating the warning sound according to the warning sound signal from a speaker, and notifying a pedestrian around a vehicle that the vehicle approaches to the pedestrian is provided. The vehicle approach warning apparatus includes a memory portion, a signal generation portion, a level adjustment portion, a signal synthesizing portion, and an amplifier. The memory portion stores a first sound source data for generating a signal of a low frequency component, and a second sound source data for generating a signal of a high frequency component. The signal generation portion generates the signal of the low frequency component, and the signal of the high frequency component. The level adjustment portion adjusts a level of the signal of the low frequency component and the high frequency component.

主权项

1. A vehicle approach warning apparatus outputting a warning sound signal, and outputting a warning sound according to the warning sound signal from a speaker, and notifying a pedestrian around a vehicle that the vehicle approaches to the pedestrian, the vehicle approach warning apparatus comprising:
a memory portion storing
a first sound source data for generating a signal of a low frequency component, anda second sound source data for generating a signal of a high frequency component; a signal generation portion generating the signal of the low frequency component using the first sound source data, and the signal of the high frequency component using the second sound source data; a level adjustment portion adjusting, according to a vehicle speed,
a level of the signal of the low frequency component to generate an adjusted signal of the low frequency component, anda level of the signal of the high frequency component to generate an adjusted signal of the high frequency component,wherein the speaker outputs the warning sound of which a recognition for the pedestrian around the vehicle is improved; a signal synthesizing portion outputting a synthesized warning sound signal synthesized from the adjusted signal of the low frequency component and the adjusted signal of the high frequency component; and an amplifier amplifying the synthesized warning sound signal by a predetermined amplification factor to generate an amplified warning sound signal, and outputting the amplified warning sound signal.