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SG114498A1 - Method and apparatus for generating directional sound using an ultrasonic carrier wave - Google Patents

Method and apparatus for generating directional sound using an ultrasonic carrier wave

Info

Publication number
SG114498A1
SG114498A1 SG200105344A SG200105344A SG114498A1 SG 114498 A1 SG114498 A1 SG 114498A1 SG 200105344 A SG200105344 A SG 200105344A SG 200105344 A SG200105344 A SG 200105344A SG 114498 A1 SG114498 A1 SG 114498A1
Authority
SG
Singapore
Prior art keywords
carrier wave
directional sound
ultrasonic carrier
generating directional
generating
Prior art date
Application number
SG200105344A
Inventor
Gan Woon-Seng
Er Meng-Hwa
Hin Liew Yew
Lee Chee-Mun
Andi Karnapi Furi
Original Assignee
Univ Nanyang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Nanyang filed Critical Univ Nanyang
Priority to SG200105344A priority Critical patent/SG114498A1/en
Priority to PCT/SG2002/000195 priority patent/WO2003019125A1/en
Priority to US10/789,243 priority patent/US7146011B2/en
Publication of SG114498A1 publication Critical patent/SG114498A1/en

Links

SG200105344A 2001-08-31 2001-08-31 Method and apparatus for generating directional sound using an ultrasonic carrier wave SG114498A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SG200105344A SG114498A1 (en) 2001-08-31 2001-08-31 Method and apparatus for generating directional sound using an ultrasonic carrier wave
PCT/SG2002/000195 WO2003019125A1 (en) 2001-08-31 2002-08-28 Steering of directional sound beams
US10/789,243 US7146011B2 (en) 2001-08-31 2004-02-28 Steering of directional sound beams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG200105344A SG114498A1 (en) 2001-08-31 2001-08-31 Method and apparatus for generating directional sound using an ultrasonic carrier wave

Publications (1)

Publication Number Publication Date
SG114498A1 true SG114498A1 (en) 2005-09-28

Family

ID=35125833

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200105344A SG114498A1 (en) 2001-08-31 2001-08-31 Method and apparatus for generating directional sound using an ultrasonic carrier wave

Country Status (1)

Country Link
SG (1) SG114498A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU647797B2 (en) * 1990-06-26 1994-03-31 Ericsson - Ge Mobile Communications Holding Inc. A method and device for processing an analog signal
US6052336A (en) * 1997-05-02 2000-04-18 Lowrey, Iii; Austin Apparatus and method of broadcasting audible sound using ultrasonic sound as a carrier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU647797B2 (en) * 1990-06-26 1994-03-31 Ericsson - Ge Mobile Communications Holding Inc. A method and device for processing an analog signal
US6052336A (en) * 1997-05-02 2000-04-18 Lowrey, Iii; Austin Apparatus and method of broadcasting audible sound using ultrasonic sound as a carrier

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