EP 1666166 A1 20060607 - method for generating polyphone sound
Title (en)
method for generating polyphone sound
Title (de)
Verfahren zur Erzeugung polyfone Signalen
Title (fr)
Procede de generation d'un son polyphonique
Publication
Application
Priority
EP 04028421 A 20041201
Abstract (en)
The method involves applying an electrical signal (8), produced by a synthesizer, to a base of a transistor, where the signal presents impulses having fixed duration and duty cycle being lesser than 0.5. The signal (8) is determined from a time-based addition of two logical undulating signals (12a, 12b) having different frequencies, where the signals (12a, 12b) are rectangular signals.
IPC 8 full level
B06B 1/02 (2006.01)
CPC (source: EP KR US)
B06B 1/02 (2013.01 - KR); B06B 1/0276 (2013.01 - EP US); B06B 1/06 (2013.01 - KR)
Citation (search report)
- [X] DE 3230218 A1 19840223 - BRAUN AG [DE]
- [DA] CH 630503G A3 19820630
- [DA] CH 649188G A3 19850515
- [X] EP 1036600 A1 20000920 - NAMIKI PRECISION JEWEL CO LTD [JP]
- [A] US 4669424 A 19870602 - BIANCO FRANK J [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1666166 A1 20060607; AT E464129 T1 20100415; CN 101065194 A 20071031; CN 101065194 B 20110406; DE 602005020679 D1 20100527; EP 1819454 A1 20070822; EP 1819454 B1 20100414; HK 1109359 A1 20080606; JP 2008522227 A 20080626; KR 101233004 B1 20130213; KR 20070084021 A 20070824; US 2009153221 A1 20090618; WO 2006058608 A1 20060608
DOCDB simple family (application)
EP 04028421 A 20041201; AT 05803471 T 20051114; CN 200580040350 A 20051114; DE 602005020679 T 20051114; EP 05803471 A 20051114; EP 2005012169 W 20051114; HK 08100294 A 20080109; JP 2007543724 A 20051114; KR 20077010313 A 20051114; US 71972105 A 20051114