Lautsprecher

Details

Veröffentlichungs-Nr.

EP4716252

Anmeldetag

11. August 2025

Veröffentlichung

25. März 2026

Rechtsraum

EP

IPC

H04R3/00, // H04R9/02(TOITA HIROKI et al.)

Abstract

A speaker includes: a drive-and-support part having a frame; a vibrating part supported by the frame such that the vibrating part is able to vibrate; a magnetic drive part configured to make the vibrating part vibrate; a detection magnet provided in one of the drive-and-support part or the vibrating part; a first magnetic sensor and a second magnetic sensor provided in the other one of the drive-and-support part or the vibrating part, and configured to detect a magnetic field produced by the detection magnet; and a detection circuit configured to determine a difference between a first detection output of the first magnetic sensor and a second detection output of the second magnetic sensor. The first and second magnetic sensors are spaced apart from each other in a direction in which the vibrating part vibrates.

Anmelder

Firma

Alps Alpine Co., Ltd.

Land

🇯🇵 Japan