EP 1115266 A4 20051207 - SOUND-REPRODUCTION DEVICE
Title (en)
SOUND-REPRODUCTION DEVICE
Title (de)
TONWIEDERGEBEGERÄT
Title (fr)
DISPOSITIF DE REPRODUCTION SONORE
Publication
Application
Priority
- JP 0004652 W 20000712
- JP 20307499 A 19990716
Abstract (en)
[origin: EP1115266A1] A sound reproduction apparatus that performs a better masking compensation, by precisely extracting the ambient noise from a composite sound which contains the ambient noise and the signal generated by a speaker, removing therefrom the signal generated from the speaker. It comprises a first microphone (16) provided outside a dust cap (15) of a speaker unit (14), and a second microphone (17) provided inside a dust cap (15). An output signals from the microphones are filtered respectively and then added together, the added signal controls the strength of input signal. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 3/02 (2006.01); H03G 3/32 (2006.01); H04R 3/00 (2006.01)
CPC (source: EP)
H04R 3/002 (2013.01)
Citation (search report)
- [PA] EP 0951201 A2 19991020 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] PATENT ABSTRACTS OF JAPAN vol. 014, no. 062 (E - 0883) 5 February 1990 (1990-02-05)
- See references of WO 0106809A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1115266 A1 20010711; EP 1115266 A4 20051207; JP 2001036984 A 20010209; WO 0106809 A1 20010125
DOCDB simple family (application)
EP 00946273 A 20000712; JP 0004652 W 20000712; JP 20307499 A 19990716