Vehicle proximity notification device and vehicle proximity notification method
US-2020215969-A1 · Jul 9, 2020 · US
Notification sound generation device
US12549899B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12549899-B2 |
| Application number | US-202318337823-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2023 |
| Priority date | Dec 22, 2020 |
| Publication date | Feb 10, 2026 |
| Grant date | Feb 10, 2026 |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 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.
Assignees
Inventors
Classifications
Acoustic transducers and sound field adaptation in vehicles · CPC title
Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture · CPC title
Arrangement or adaptation of acoustic signal devices · CPC title
Aspects of volume control, not necessarily automatic, in sound systems · CPC title
for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching · CPC title
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- What does patent US12549899B2 cover?
- 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 correctin…
- Who is the assignee on this patent?
- Denso Electronics Corp, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04R3/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 10 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).