EP 0229230 A1 19870722 - Directional-microphone arrangement.
Title (en)
Directional-microphone arrangement.
Title (de)
Richtmikrofonanordnung.
Title (fr)
Dispositif microphonique directif.
Publication
Application
Priority
DE 3536885 A 19851016
Abstract (en)
[origin: US4712244A] A directional microphone arrangement has a number of discrete microphones each having an electrical output and elements for deriving first and second electrical signals which are 180 DEG out of phase with respect to each other from the outputs of the microphones. A third signal is also derived through differentiation from one of the microphone outputs which is 90 DEG out of phase with respect to one of the first or second signals. All of the first, second and third signals are added in a summing unit, the output of the summing unit forming the output for the arrangement.
Abstract (de)
Die Richtmikrofonanordnung umfaßt eine vorgebbare Zahl von Einzelmikrofonen, die unter Verwendung einer Phasenschieberanordnung additiv und/oder subtraktiv miteinander verbunden sind. Von wenigstens zwei nicht gerichteten Mikrofonen (M1, M2) sind drei elektrische Mikrofonsignale (S1, S2, S3) ableitbar, von denen zwei Signale (S1, S2) gegeneinander um 180° phasenverschoben sind. Das dritte Signal (S3) ist gegenüber einem der beiden anderen Signale mittels eines Differenziergliedes (4) um 90° in der Phase gedreht. Ein Summenbildner (5) summiert schließlich die drei Mikrofonsignale.
IPC 1-7
IPC 8 full level
H04R 1/02 (2006.01); H04R 1/40 (2006.01); H04R 3/00 (2006.01); H04R 5/027 (2006.01); H04R 5/04 (2006.01); H04R 25/00 (2006.01); H04R 25/02 (2006.01)
CPC (source: EP US)
H04R 25/405 (2013.01 - EP US); H04R 25/407 (2013.01 - EP US); H04R 2201/403 (2013.01 - EP US); H04R 2225/43 (2013.01 - EP US)
Citation (search report)
- [AD] FR 2436416 A1 19800411 - POLAROID CORP [US]
- [AD] DE 3102530 A1 19811126 - VICTOR COMPANY OF JAPAN [JP]
- [AD] DE 3102208 A1 19811210 - VICTOR COMPANY OF JAPAN [JP]
- [A] FR 2282768 A1 19760319 - SCHOEPS KARL [DE]
- [A] DE 2362874 A1 19740627 - AKG AKUSTISCHE KINO GERAETE
- [A] US 2301744 A 19421110 - OLSON HARRY F
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0229230 A1 19870722; EP 0229230 B1 19900613; AT E53734 T1 19900615; DE 3672079 D1 19900719; DE 8529437 U1 19870611; DK 491986 A 19870417; DK 491986 D0 19861015; JP S6295097 A 19870501; US 4712244 A 19871208
DOCDB simple family (application)
EP 86113802 A 19861006; AT 86113802 T 19861006; DE 3672079 T 19861006; DE 8529437 U 19851016; DK 491986 A 19861015; JP 24286586 A 19861013; US 91849786 A 19861014