Patent · US Active

Active noise control for a helmet

US10796681B2 · kind B2 · utility

1Cited by

7References

21Claims

0Family size

Assignee

HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH · DE

Inventors

Paul Zukowski · Chamerau, DE
Gerhard Pfaffinger · Regensburg, DE

Key dates

Filing date	Feb 10, 2016
Grant date	Oct 6, 2020
Priority date	—
Expiry date	Mar 17, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/13
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An automatic noise control system and method for a helmet with a rigid shell that is configured to spatially divide a shell interior from a shell ambiance include generating in connection with at least one loudspeaker disposed in the shell interior anti-sound in the shell interior based on at least one input signal. The anti-sound is configured to attenuate sound occurring in the shell interior through destructive superposition. The system and method further include providing the at least one input signal by at least one of picking up sound in the vicinity of the loudspeaker in the shell interior, picking up vibrations of the shell, and picking up sound in the vicinity of the shell exterior.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.