Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/41
Name: Electrical audio signal processing systems and devices >
Description:










Sub-classes under this class:

Class Number Class Name Patents
381/ Binaural and stereophonic 0
381/1 Binaural and stereophonic 581
381/104 Including amplitude or volume control 632
381/110 Voice controlled 203
381/111 Circuitry combined with specific type microphone or loudspeaker 385
381/118 With musical instrument 139
381/119 With mixer 580
381/120 With amplifier 509
381/122 Having microphone 404
381/123 Switching 372
381/124 Miscellaneous 115
381/150 Electro-acoustic audio transducer 157
381/312 Hearing aids, electrical 941
381/54 Helium speech 8
381/55 Audio transducer protection circuitry 127
381/56 Monitoring of sound 640
381/58 Monitoring/measuring of audio devices 521
381/61 Sound effects 599
381/66 Dereverberators 241
381/67 Stethoscopes, electrical 183
381/70 Artificial larynx, electrical 40
381/71.1 Acoustical noise or sound cancellation 455
381/72 Hearing protectors, electrical 175
381/73.1 Sound or noise masking 168
381/74 Headphone circuits 530
381/75 Megaphones 24
381/76 Lecterns 8
381/77 One-way audio signal program distribution 475
381/86 Vehicle 771
381/87 Having non-electrical feature (e.g., mounting) 209
381/92 Directive circuits for microphones 760
381/93 Feedback suppression 278
381/94.1 Noise or distortion suppression 696
381/95 Microphone feedback 95
381/96 Loudspeaker feedback 281
381/97 Including phase control 223
381/98 Including frequency control 681


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
  Recently Added Patents
Semiconductor device with hetero-junction bodies
Improving alignment target contrast in a lithographic double patterning process
Portion of a display panel with an unhappy facial expression icon
Device for determining the absolute angular position of the steering wheel of an electric power-assisted steering column of a motor vehicle using weighted dynamic parameters of the vehicle
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
Telecommunications system and method
Field device for determining or monitoring a physical or chemical process variable
  Randomly Featured Patents
Zone, system and failure aware self adjusting IP surveillance cameras
Methods of identifying anti-cancer agents and uses thereof
System and method for implementing polling agents in a client management tool
Sealed shower system for rotary vacuum filter
Switch contact structure
Hydrophilic layers adjacent a stripping layer for diffusion transfer assemblages
Endoscopic device delivery system
Miniature motor having an internal coolant line
Dispense nozzle design and dispense method
Amide/urea-modified liquid diphenylmethane diisocyanates