(19)
(11) EP 1 197 060 A1

(12)

(43) Date of publication:
17.04.2002 Bulletin 2002/16

(21) Application number: 00960172.5

(22) Date of filing: 20.07.2000
(51) International Patent Classification (IPC)7: H04M 1/00
(86) International application number:
PCT/US0040/441
(87) International publication number:
WO 0108/380 (01.02.2001 Gazette 2001/05)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 23.07.1999 US 360211
23.07.1999 US 361014

(71) Applicant: Acoustic Technologies, Inc.
Mesa, AZ 85210 (US)

(72) Inventors:
  • MOORE, Kendall, G.
    Tempe, AZ 85283 (US)
  • THOMASSON, Samuel, L.
    Gilbert, AZ 85234 (US)

(74) Representative: Dealtry, Brian et al
Eric Potter Clarkson,Park View House,58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB)

   


(54) ACOUSTIC AND ELECTRONIC ECHO CANCELLATION USING HIGH RESOLUTION DELAY LINE