The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Nov. 09, 2021
Ntt, Inc.;
NTT, Inc., Tokyo, JP;
Abstract
Provided is an acoustic signal output device including a first driver unit that emits a first acoustic signal to one side and emits a second acoustic signal to another side, a second driver unit that emits a fourth acoustic signal to one side and emits a third acoustic signal to another side, a first housing portion provided with a first sound hole for leading out the first acoustic signal to an outside and a second sound hole for leading out the second acoustic signal to an outside, and a second housing portion provided with a third sound hole for leading out the third acoustic signal to an outside and a fourth sound hole for leading out the fourth acoustic signal to an outside. Provided that a frequency bandwidth of the third and fourth acoustic signals emitted from the second driver unit is narrower than a frequency bandwidth of the first and second acoustic signals emitted from the first driver unit.