EP 1068774 A1 20010117 - INTELLIGENT SPEAKER TUNING USING NON-VOLATILE MEMORY
Title (en)
INTELLIGENT SPEAKER TUNING USING NON-VOLATILE MEMORY
Title (de)
INTELLIGENTE LAUTSPRECHERABSTIMMUNG MIT VERWENDUNG VOM NICHTFLÜCHTIGENSPEICHER
Title (fr)
SYNTONISATION D'UN HAUT PARLEUR INTELLIGENT AU MOYEN D'UNE MEMOIRE NON VOLATILE
Publication
Application
Priority
- US 0002274 W 20000126
- US 23690099 A 19990126
Abstract (en)
[origin: WO0044200A1] A non-intrusive system and method for tuning the speaker (50) is performed by applying a reference signal and a control signal to the input of the programmable speaker (50). A microphone (54) detects a sound corresponding to the input reference signal at the output (53) of the speaker and feeds it back to a tester (55) which analyzes the frequency response of the speaker (50) by comparing the input reference signal to the audible output signal (53) from the speaker (50). Depending on the results of the comparison, the tester provides to the speaker (50) an updated digital control signal with new characterization data which is then stored in the speaker memory (52) and used to again perform transform functions on the input reference signal. The tuning feedback cycle continues until the input reference signal and the audible output signal (53) from the speaker (50) exhibit the desired frequency response as determined by the tester.
IPC 1-7
IPC 8 full level
CPC (source: EP KR)
H03G 5/005 (2013.01 - EP); H04R 3/00 (2013.01 - EP KR)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0044200 A1 20000727; WO 0044200 A9 20011115; AU 2976100 A 20000807; EP 1068774 A1 20010117; JP 2002535946 A 20021022; KR 20010102817 A 20011116
DOCDB simple family (application)
US 0002274 W 20000126; AU 2976100 A 20000126; EP 00908414 A 20000126; JP 2000595516 A 20000126; KR 20007010602 A 20000925