EP 1622418 A1 20060201 - Digital audio frequency optimizer
Title (en)
Digital audio frequency optimizer
Title (de)
Digitales System zur Audio-Frequenz Optimierung
Title (fr)
Systeme numerique pour optimisation de la frequence audio
Publication
Application
Priority
EP 04017414 A 20040722
Abstract (en)
A digital audio frequency optimizer is arranged to save a previously established frequency response curve of a speaker and a voice box in a read-only memory (EFPROM). And there is a CPU as control center. After reading a serial signal of analog/digital signal transducer and arranging it to be apposition signal through the CPU, then the apposition signal is sent to digital signal processor (DSP) to operate with the frequency curve of speaker and voice box saved on read-only memory. Then the operated results are sent back to CPU to transfer to a serial signal, and transmitted to digital/analog signal transducer to transfer to analog signal. After processing by the filter and amplifying by a power amplifier through filter and buffer, the signal is output to speaker and voice box. Hereby a flat frequency output response curve can be obtained.
IPC 8 full level
CPC (source: EP)
H04R 3/04 (2013.01)
Citation (search report)
- [X] US 4888811 A 19891219 - TAKASHI MAKINO [JP]
- [X] US 5588063 A 19961224 - EDGAR ALBERT D [US]
- [A] EP 0377165 A2 19900711 - MITSUBISHI ELECTRIC CORP [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04017414 A 20040722