Electrodynamic loudspeaker with electromagnetic impedance sensor

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

381 96, 381194, H04R 2500

Patent

active

051971046

ABSTRACT:
An electro-acoustic system including an amplifier circuitry for amplifying an input signal to provide an amplified signal; and electrodynamic loudspeaker having at least one magnet, a diaphragm connected to a coil support, a voice coil for driving a diaphragm in response to the amplified signal with the presence of the magnet, and an electromagnetic impedance sensor coil partically offset with the at least one magnet for providing a feedback signal proportional to its electromagnetic impedance which is a function of both the moving speed and the displacement of the diaphragm; a negative feedback circuitry processing the feedback signal and providing a negative feedback signal; and a summing circuitry for combining the input signal and the negative feedback signal and sending a combined signal to the amplifier circuitry, which in turn provides an amplified combined signal to the electrodynamic loudspeaker to thereby reduce the distortion of the electrodynamic loudspeaker.

REFERENCES:
patent: 2007748 (1935-07-01), Olson
patent: 2007749 (1935-07-01), Anderson
patent: 3047661 (1962-07-01), Winker
patent: 3067366 (1962-12-01), Hofman
patent: 3196211 (1965-07-01), Kessenich
patent: 3530244 (1970-09-01), Reiffin
patent: 3686446 (1972-08-01), Manger
patent: 3937905 (1976-02-01), Manger
patent: 4151379 (1979-04-01), Ashworth
patent: 4220832 (1980-09-01), Nagel
patent: 4243839 (1981-01-01), Takahashi
patent: 4256923 (1981-03-01), Meyers
patent: 4492827 (1985-01-01), Shintaku
patent: 4598178 (1986-01-01), Rollins
patent: 4609784 (1986-09-01), Miller
patent: 4783824 (1988-11-01), Kobayashi

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electrodynamic loudspeaker with electromagnetic impedance sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrodynamic loudspeaker with electromagnetic impedance sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrodynamic loudspeaker with electromagnetic impedance sensor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1357948

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.