EP 3475941 B1 20230906 - DRONE NOISE REDUCTION VIA SIMULTANEOUS PROPELLER MODULATION
Title (en)
DRONE NOISE REDUCTION VIA SIMULTANEOUS PROPELLER MODULATION
Title (de)
GERÄUSCHVERMINDERUNG BEI DROHNEN MITTELS GLEICHZEITIGER PROPELLERMODULATION
Title (fr)
RÉDUCTION DU BRUIT D'UN DRONE GRÂCE À LA MODULATION SIMULTANÉE DES HÉLICES
Publication
Application
Priority
- US 201615194317 A 20160627
- US 201615194258 A 20160627
- US 201615255098 A 20160901
- US 2017039476 W 20170627
Abstract (en)
[origin: WO2018005472A1] Techniques for using an unmanned aerial vehicle (UAV) to deliver a payload while generating an expected sound by the UAV during delivery may be provided. For example, during delivery or while in flight, propellers of different sizes that are associated with the UAV may be instructed to modulate at different rotational speeds to thereby generate an expected sound.
IPC 8 full level
G10K 11/178 (2006.01)
CPC (source: EP)
G10K 11/178 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2018005472 A1 20180104; CN 109478403 A 20190315; CN 109478403 B 20191122; EP 3475941 A1 20190501; EP 3475941 B1 20230906; JP 2019525864 A 20190912; JP 6637622 B2 20200129
DOCDB simple family (application)
US 2017039476 W 20170627; CN 201780042499 A 20170627; EP 17737169 A 20170627; JP 2018567277 A 20170627