Patent · US Active

Portable device with enhanced bass response

US9516406B2 · kind B2 · utility

3Cited by

1References

29Claims

0Family size

Assignee

NOKIA TECHNOLOGIES OY · FI

Inventors

Andreas Fromel · Ulm, DE
Josef Stohr · Nauheim, DE

Key dates

Filing date	Dec 20, 2011
Grant date	Dec 6, 2016
Priority date	—
Expiry date	Feb 2, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/11
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Apparatus comprising: at least one transducer configured to generate at least one lower frequency acoustic signal for output by a surface when in contact with the apparatus and at least one higher frequency acoustic signal for output by air conduction.

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