(19)
(11) EP 0 820 210 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.04.1998 Bulletin 1998/14

(43) Date of publication A2:
21.01.1998 Bulletin 1998/04

(21) Application number: 97114413.4

(22) Date of filing: 20.08.1997
(51) International Patent Classification (IPC)6: H04R 3/00
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(71) Applicant: PHONAK AG
8712 Stäfa (CH)

(72) Inventors:
  • Malsano, Joseph
    2000 Neuchâtel (CH)
  • Hottinger, Werner
    2000 Neuchâtel (CH)

(74) Representative: Troesch Scheidegger Werner AG 
Patentanwälte, Siewerdtstrasse 95, Postfach
8050 Zürich
8050 Zürich (CH)

   


(54) A method for elctronically beam forming acoustical signals and acoustical sensorapparatus


(57) A predetermined characteristic of amplification in dependency of the direction (θ) from which acoustical signals are received at two spaced apart acoustical/electrical transducers (1, 2) is formed in that repetitively a mutual delay signal (A10) is determined from the output signals of the transducers and according to the reception delay at the transducers, one (S1) of the output signals is filtered, thereby the filtering transfer characteristic is controlled in dependency of the mutual delay signal (A12). The output signal of the filtering (14) is exploited as electrical reception signal (Sr).






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