Feigin & Fridman, LLC has obtained the following 21 United States patents in Electrical — Audio & Acoustics for our clients. Click any patent for full details, drawings, and the issued PDF, or search the full patent database.
Loudspeaker system having an acoustic meta material enclosure
Meta material porous/poro-elastic sound absorbers
Methods and systems for modifying acoustics of a loudspeaker back enclosure using active noise control
Metamaterial acoustic impedance matching device for headphone-type devices
Acoustic meta material passive spiral audio amplifier and a method to make the same
Passive acoustic meta material audio amplifier and the method to make the same
Metamaterial passive impedance matching device for a loudspeaker
Methods and systems for modifying acoustics of a loudspeaker back enclosure using active noise control
Acoustic meta material passive spiral audio amplifier and a method to make the same
Sliding hinge collapsible discs
Passive acoustic meta material audio amplifier and the method to make the same
Meta acoustic horn system for audio amplification and the method to make the same
Passive acoustic meta material audio amplifier and the method to make the same
Speech recognition based on context and multiple recognition engines
Acoustic holographic recording and reproduction system using meta material layers
Active acoustic meta material loudspeaker system and the process to make the same
Active acoustic meta material loudspeaker system and the process to make the same
Acoustic metamaterial noise control method and apparatus for ducted systems
Necklace and earphone combination device
Audio recording analysis and rating
Voice-activated control for electrical device
