1. CPC Sections
  2. CPC Section G
  3. CPC Class G10
  4. CPC Subclass G10K
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
G10K
SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR [2024-01]
NOTES

  • This subclass covers:
    • arrangements for generating mechanical vibrations in fluids;
    • the production of sounds which may not be audible to human beings but which are audible to animals.
  • In this subclass, the following terms are used with the meanings indicated:
    • "acoustics" and "sound" cover the technical field dealing with mechanical vibrations at all infrasonic -, sonic - and ultrasonic frequencies. However, generation or transmission of mechanical waves, in general, is covered by subclass B06B, subject to the exception specified in Note (1) above.
WARNING

  • {In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.}
G10K 1/00
Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs (multi-toned musical instruments G10D 13/08; automatic carillons G10F 1/10) [2023-01]
G10K 1/06
.
the resonating devices having the shape of a bell, plate, rod, or tube (bells for towers G10K 1/28) [2013-01]
G10K 1/062
. .
electrically operated [2023-01]
G10K 1/063
. . .
the sounding member being a bell [2013-01]
G10K 1/064
. . . .
Operating or striking mechanisms therefor [2013-01]
G10K 1/0645
. . . . .
{provided with loudness adjustment} [2013-01]
G10K 1/065
. . . . .
for timed or repeated operation [2023-01]
G10K 1/066
. . .
the sounding member being a tube, plate or rod [2013-01]
G10K 1/067
. . . .
Operating or striking mechanisms therefor [2013-01]
G10K 1/068
. .
hydraulically operated; pneumatically operated [2013-01]
G10K 1/07
. .
mechanically operated; Hand bells; Bells for animals [2013-01]
G10K 1/071
. . .
Hand bells; Bells for animals [2013-01]
G10K 1/072
. . .
Operating or striking mechanisms therefor [2013-01]
G10K 1/074
. . . .
with rotary clappers or shells [2013-01]
G10K 1/076
. . . .
for timed or repeated operation [2023-01]
G10K 1/08
. .
Details or accessories of general applicability [2013-01]
G10K 1/10
. . .
Sounding members; Mounting thereof; Clappers or other strikers [2013-01]
G10K 1/26
. . .
Mountings; Casings [2013-01]
G10K 1/28
.
Bells for towers or the like [2013-01]
G10K 1/30
. .
Details or accessories [2013-01]
G10K 1/32
. . .
Sounding members; Clappers or other strikers [2013-01]
G10K 1/34
. . .
Operating mechanisms [2013-01]
G10K 1/341
. . . .
{for a still-standing bell} [2013-01]
G10K 1/342
. . . . .
{electrically operated} [2013-01]
G10K 1/344
. . . .
{for an oscillating bell which is driven once per cycle} [2013-01]
G10K 1/345
. . . . .
{electrically operated} [2013-01]
G10K 1/347
. . . .
{for an oscillating bell which is driven twice per cycle} [2013-01]
G10K 1/348
. . . . .
{electrically operated} [2013-01]
G10K 1/36
. . .
Means for silencing or damping [2023-01]
G10K 1/38
. . .
Supports; Mountings [2013-01]
G10K 3/00
Rattles or like noise-producing devices {, e.g. door-knockers} [2017-08]
G10K 5/00
Whistles [2013-01]
G10K 5/02
.
Ultrasonic whistles [2013-01]
G10K 7/00
Sirens [2013-01]
G10K 7/005
.
{Ultrasonic sirens} [2013-01]
G10K 7/02
.
in which the sound-producing member is rotated manually or by a motor (G10K 7/06 takes precedence) [2023-01]
G10K 7/04
. .
by an electric motor [2013-01]
G10K 7/06
.
in which the sound-producing member is driven by a fluid, e.g. by a compressed gas [2023-01]
G10K 9/00
Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers (loudspeakers or like acoustic electromechanical transducers H04R) [2023-01]
G10K 9/02
.
driven by gas; e.g. suction operated [2013-01]
G10K 9/04
. .
by compressed gases, e.g. compressed air [2013-01]
G10K 9/06
. .
produced by detonation [2013-01]
G10K 9/08
.
driven by water or other liquids [2013-01]
G10K 9/10
.
driven by mechanical means only [2013-01]
​
G10K 9/12
.
electrically operated [2013-01]
NOTE

  • This group does not cover the construction of, or circuits for, broadband-transducers such as loudspeakers or microphones, which are covered by subclass H04R.
G10K 9/121
. .
{Flextensional transducers} [2013-01]
G10K 9/122
. .
using piezoelectric driving means {(G10K 9/121 takes precedence)} [2023-08]
G10K 9/125
. . .
with a plurality of active elements [2013-01]
G10K 9/128
. .
using magnetostrictive driving means {(G10K 9/121 takes precedence)} [2013-01]
​
G10K 9/13
. .
using electromagnetic driving means [2013-01]
NOTE

G10K 9/15
. . .
Self-interrupting arrangements [2013-01]
G10K 9/16
. .
with means for generating current by muscle power [2013-01]
G10K 9/18
.
Details, e.g. bulbs, pumps, pistons, switches or casings [2023-01]
G10K 9/20
. .
Sounding members [2013-01]
G10K 9/22
. .
Mountings; Casings [2013-01]
G10K 11/00
Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general [2018-01]
G10K 11/002
.
{Devices for damping, suppressing, obstructing or conducting sound in acoustic devices (G10K 1/06 - G10K 1/10 take precedence; for electro-mechanical transducers for communication H04R 3/002)} [2016-05]
G10K 11/004
.
{Mounting transducers, e.g. provided with mechanical moving or orienting device (mountings specially adapted to a particular sound-producing device, see the preceding groups G10K 1/00 - G10K 9/00, e.g. G10K 1/26, G10K 1/28, G10K 9/22; arrangements of sonic watch equipment on submarines B63G 8/39; buoys B63B 22/00)} [2016-08]
G10K 11/006
. .
{Transducer mounting in underwater equipment, e.g. sonobuoys} [2013-01]
G10K 11/008
. . .
{Arrays of transducers (seismic streamers, see G01V 1/20)} [2013-01]
G10K 11/02
.
Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators [2013-01]
G10K 11/025
. .
{horns for impedance matching (see provisionally also G10K 11/28)} [2013-01]
G10K 11/04
. .
Acoustic filters {; Acoustic resonators} [2013-01]
G10K 11/08
.
Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K 11/02; amplifying by focusing G10K 11/26) [2013-01]
​
G10K 11/16
.
Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K 11/36 takes precedence) [2018-01]
NOTE

  • This group does not cover protecting against, or damping of, acoustic waves adapted for particular applications, which are covered by the subclasses for these applications, provided that there is a specific provision for this aspect.
G10K 11/161
. .
{in systems with fluid flow (G10K 11/162 takes precedence; gas flow silencers or exhaust apparatus for machines or engines in general or for internal combustion engine F01N, noise absorbers in pipes or pipe systems F16L 55/02; noise absorption in air conditioning and ventilation F24F 13/24; silencing exhaust or propulsion jets in aircraft B64D 33/06)} [2013-01]
G10K 11/162
. .
Selection of materials [2013-01]
G10K 11/165
. . .
Particles in a matrix [2013-01]
​
G10K 11/168
. . .
Plural layers of different materials, e.g. sandwiches [2013-01]
NOTE

  • When classifying in this group, classification is also made in subclass B32B, in so far as any layered product is concerned.
G10K 11/172
. .
using resonance effects [2018-05]
​
G10K 11/175
. .
using interference effects; Masking sound [2022-02]
NOTES

G10K 11/1752
. . .
{Masking} [2022-02]
G10K 11/1754
. . . .
{Speech masking} [2022-02]
​
G10K 11/178
. . .
by electro-acoustically regenerating the original acoustic waves in anti-phase [2021-08]
NOTE

G10K 11/1781
. . . .
{characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions} [2021-08]
G10K 11/17813
. . . . .
{characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms} [2018-01]
G10K 11/17815
. . . . . .
{between the reference signals and the error signals, i.e. primary path} [2018-01]
G10K 11/17817
. . . . . .
{between the output signals and the error signals, i.e. secondary path} [2018-01]
G10K 11/17819
. . . . . .
{between the output signals and the reference signals, e.g. to prevent howling} [2018-01]
G10K 11/17821
. . . . .
{characterised by the analysis of the input signals only} [2018-01]
G10K 11/17823
. . . . . .
{Reference signals, e.g. ambient acoustic environment} [2018-01]
G10K 11/17825
. . . . . .
{Error signals} [2018-01]
G10K 11/17827
. . . . . .
{Desired external signals, e.g. pass-through audio such as music or speech} [2018-01]
G10K 11/1783
. . . .
{handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions} [2021-08]
G10K 11/17833
. . . . .
{by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels} [2018-01]
G10K 11/17835
. . . . . .
{using detection of abnormal input signals} [2018-01]
G10K 11/17837
. . . . .
{by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear} [2018-01]
G10K 11/1785
. . . .
{Methods, e.g. algorithms; Devices (G10K 11/1781, G10K 11/1783 take precedence)} [2021-08]
G10K 11/17853
. . . . .
{of the filter} [2020-08]
G10K 11/17854
. . . . . .
{the filter being an adaptive filter} [2018-01]
G10K 11/17855
. . . . .
{for improving speed or power requirements} [2018-01]
G10K 11/17857
. . . . .
{Geometric disposition, e.g. placement of microphones} [2018-01]
G10K 11/17861
. . . . .
{using additional means for damping sound, e.g. using sound absorbing panels} [2018-01]
G10K 11/1787
. . . .
{General system configurations} [2021-08]
G10K 11/17873
. . . . .
{using a reference signal without an error signal, e.g. pure feedforward} [2018-01]
G10K 11/17875
. . . . .
{using an error signal without a reference signal, e.g. pure feedback} [2018-01]
G10K 11/17879
. . . . .
{using both a reference signal and an error signal} [2018-01]
G10K 11/17881
. . . . . .
{the reference signal being an acoustic signal, e.g. recorded with a microphone} [2018-01]
G10K 11/17883
. . . . . .
{the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed} [2018-01]
​
G10K 11/17885
. . . . .
{additionally using a desired external signal, e.g. pass-through audio such as music or speech} [2018-01]
NOTE

  • {When classifying in this group, classification is also made in the other appropriate groups under G10K 11/1787.}
G10K 11/18
.
Methods or devices for transmitting, conducting or directing sound (G10K 11/02, G10K 11/36 take precedence) [2023-01]
G10K 11/20
. .
Reflecting arrangements (G10K 11/28 takes precedence) [2013-01]
G10K 11/205
. . .
{for underwater use} [2013-01]
G10K 11/22
. .
for conducting sound through hollow pipes, e.g. speaking tubes [2013-01]
G10K 11/24
. .
for conducting sound through solid bodies, e.g. wires [2017-08]
G10K 11/26
. .
Sound-focusing or directing, e.g. scanning [2023-01]
G10K 11/28
. . .
using reflection, e.g. parabolic reflectors [2023-01]
G10K 11/30
. . .
using refraction, e.g. acoustic lenses [2013-01]
G10K 11/32
. . .
characterised by the shape of the source [2013-01]
G10K 11/34
. . .
using electrical steering of transducer arrays, e.g. beam steering {(constructional aspects B06B 1/0607, B06B 1/085)} [2013-01]
G10K 11/341
. . . .
{Circuits therefor} [2013-01]
G10K 11/343
. . . . .
{using frequency variation or different frequencies} [2013-01]
G10K 11/345
. . . . .
{using energy switching from one active element to another} [2013-01]
G10K 11/346
. . . . .
{using phase variation} [2013-01]
G10K 11/348
. . . . .
{using amplitude variation} [2013-01]
G10K 11/35
. . .
using mechanical steering of transducers {or their beams} [2013-01]
G10K 11/352
. . . .
{by moving the transducer} [2013-01]
G10K 11/355
. . . . .
{Arcuate movement} [2013-01]
G10K 11/357
. . . .
{by moving a reflector} [2013-01]
G10K 11/36
.
Devices for manipulating acoustic surface waves (electro-acoustic amplifiers H03F 13/00; networks comprising electro-acoustic elements H03H 9/00) [2013-01]
G10K 13/00
Cones, diaphragms, or the like, for emitting or receiving sound in general (for electromechanical transducers H04R 7/00) [2013-01]
G10K 15/00
Acoustics not otherwise provided for [2013-01]
​
G10K 15/02
.
Synthesis of acoustic waves (synthesis of speech G10L 13/00) [2023-01]
NOTE

G10K 15/04
.
Sound-producing devices (G10K 15/02 takes precedence) [2013-01]
G10K 15/043
. .
{producing shock waves (G10K 15/046, G10K 15/06 take precedence; generating seismic energy G01V 1/02)} [2013-01]
G10K 15/046
. .
{using optical excitation, e.g. laser bundle} [2013-01]
G10K 15/06
. .
using electric discharge [2013-01]
G10K 15/08
.
Arrangements for producing a reverberation or echo sound {(modifying acoustic properties to change reverberation time G10K 11/002)} [2013-01]
G10K 15/10
. .
using time-delay networks comprising electromechanical or electro-acoustic devices [2013-01]
G10K 15/12
. .
using electronic time-delay networks [2013-01]
G10K 2200/00
Details of methods or devices for transmitting, conducting or directing sound in general [2018-01]
G10K 2200/10
.
Beamforming, e.g. time reversal, phase conjugation or similar [2013-01]
G10K 2200/11
.
Underwater, e.g. transducers for generating acoustic waves underwater [2013-01]
G10K 2210/00
Details of active noise control [ANC] covered by G10K 11/178 but not provided for in any of its subgroups [2013-01]
G10K 2210/10
.
Applications [2013-01]
G10K 2210/101
. .
One dimensional [2013-01]
G10K 2210/102
. .
Two dimensional [2013-01]
G10K 2210/103
. .
Three dimensional [2013-01]
G10K 2210/104
. .
Aircos [2013-01]
G10K 2210/105
. .
Appliances, e.g. washing machines or dishwashers [2013-01]
G10K 2210/1051
. . .
Camcorder [2013-01]
G10K 2210/1052
. . .
Copiers or other image-forming apparatus, e.g. laser printer [2013-01]
G10K 2210/1053
. . .
Hi-fi, i.e. anything involving music, radios or loudspeakers [2013-01]
G10K 2210/1054
. . .
Refrigerators [2013-01]
G10K 2210/106
. .
Boxes, i.e. active box covering a noise source; Enclosures [2013-01]
G10K 2210/107
. .
Combustion, e.g. burner noise control of jet engines [2024-08]
G10K 2210/108
. .
Communication systems, e.g. where useful sound is kept and noise is cancelled [2013-01]
G10K 2210/1081
. . .
Earphones, e.g. for telephones, ear protectors or headsets [2013-01]
G10K 2210/1082
. . .
Microphones, e.g. systems using "virtual" microphones [2013-01]
G10K 2210/109
. .
Compressors, e.g. fans [2013-01]
G10K 2210/11
. .
Computers, i.e. ANC of the noise created by cooling fan, hard drive or the like [2013-01]
G10K 2210/111
. .
Directivity control or beam pattern [2013-01]
G10K 2210/112
. .
Ducts [2024-08]
G10K 2210/113
. .
Elevators [2013-01]
G10K 2210/114
. .
Feeders, i.e. of the vibrating kind [2013-01]
G10K 2210/115
. .
Impact noise, e.g. from typewriter or printer [2013-01]
G10K 2210/116
. .
Medical; Dental [2013-01]
G10K 2210/1161
. . .
NMR or MRI [2013-01]
G10K 2210/117
. .
Nonlinear [2013-01]
G10K 2210/118
. .
Panels, e.g. active sound-absorption panels or noise barriers [2013-01]
G10K 2210/119
. .
Radiation control, e.g. control of sound radiated by vibrating structures [2013-01]
G10K 2210/12
. .
Rooms, e.g. ANC inside a room, office, concert hall or automobile cabin [2013-01]
G10K 2210/121
. .
Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general [2013-01]
G10K 2210/122
. .
Seismics [2013-01]
G10K 2210/123
. .
Synchrophasors or other applications where multiple noise sources are driven with a particular phase relationship [2013-01]
G10K 2210/124
. .
Traffic [2013-01]
G10K 2210/125
. .
Transformers [2013-01]
G10K 2210/126
. .
Transients [2013-01]
G10K 2210/127
. .
Underwater acoustics, e.g. for submarine [2013-01]
G10K 2210/128
. .
Vehicles [2013-01]
G10K 2210/1281
. . .
Aircraft, e.g. spacecraft, airplane or helicopter [2013-01]
G10K 2210/1282
. . .
Automobiles [2013-01]
G10K 2210/12821
. . . .
Rolling noise; Wind and body noise [2013-01]
G10K 2210/12822
. . . .
Exhaust pipes or mufflers [2013-01]
G10K 2210/1283
. . .
Trains, trams or the like [2013-01]
G10K 2210/129
. .
Vibration, e.g. instead of, or in addition to, acoustic noise [2013-01]
G10K 2210/1291
. . .
Anti-Vibration-Control, e.g. reducing vibrations in panels or beams [2013-01]
G10K 2210/30
.
Means [2013-01]
G10K 2210/301
. .
Computational [2013-01]
G10K 2210/3011
. . .
Single acoustic input [2013-01]
G10K 2210/3012
. . .
Algorithms [2013-01]
G10K 2210/3013
. . .
Analogue, i.e. using analogue computers or circuits [2013-01]
G10K 2210/3014
. . .
Adaptive noise equalizers [ANE], i.e. where part of the unwanted sound is retained [2013-01]
G10K 2210/3015
. . .
Averaging, e.g. exponential [2013-01]
G10K 2210/3016
. . .
Control strategies, e.g. energy minimization or intensity measurements [2013-01]
G10K 2210/3017
. . .
Copy, i.e. whereby an estimated transfer function in one functional block is copied to another block [2013-01]
G10K 2210/3018
. . .
Correlators, e.g. convolvers or coherence calculators [2013-01]
G10K 2210/3019
. . .
Cross-terms between multiple in's and out's [2013-01]
G10K 2210/3021
. . .
Eigenfrequencies; Eigenvalues, e.g. used to identify most significant couplings between actuators and sensors [2013-01]
G10K 2210/3022
. . .
Error paths [2013-01]
G10K 2210/3023
. . .
Estimation of noise, e.g. on error signals [2013-01]
G10K 2210/30231
. . . .
Sources, e.g. identifying noisy processes or components [2013-01]
G10K 2210/30232
. . . .
Transfer functions, e.g. impulse response [2013-01]
G10K 2210/3024
. . .
Expert systems, e.g. artificial intelligence [2013-01]
G10K 2210/3025
. . .
Determination of spectrum characteristics, e.g. FFT [2013-01]
G10K 2210/3026
. . .
Feedback [2013-01]
G10K 2210/3027
. . .
Feedforward [2013-01]
G10K 2210/3028
. . .
Filtering, e.g. Kalman filters or special analogue or digital filters [2013-01]
G10K 2210/30281
. . . .
Lattice filters [2013-01]
G10K 2210/3029
. . .
Fuzzy logic; Genetic algorithms [2013-01]
G10K 2210/3031
. . .
Hardware, e.g. architecture [2013-01]
G10K 2210/3032
. . .
Harmonics or sub-harmonics [2013-01]
G10K 2210/3033
. . .
Information contained in memory, e.g. stored signals or transfer functions [2013-01]
G10K 2210/3034
. . .
Integrators [2013-01]
G10K 2210/3035
. . .
Models, e.g. of the acoustic system [2013-01]
G10K 2210/30351
. . . .
Identification of the environment for applying appropriate model characteristics [2013-01]
G10K 2210/3036
. . .
Modes, e.g. vibrational or spatial modes [2013-01]
G10K 2210/3037
. . .
Monitoring various blocks in the flow chart [2013-01]
G10K 2210/3038
. . .
Neural networks [2013-01]
G10K 2210/3039
. . .
Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain [2013-01]
G10K 2210/30391
. . . .
Resetting of the filter parameters or changing the algorithm according to prevailing conditions [2013-01]
G10K 2210/3041
. . .
Offline [2013-01]
G10K 2210/3042
. . .
Parallel processing [2013-01]
G10K 2210/3043
. . .
Phase locked loops [PLL] [2013-01]
G10K 2210/3044
. . .
Phase shift, e.g. complex envelope processing [2013-01]
G10K 2210/3045
. . .
Multiple acoustic inputs, single acoustic output [2013-01]
G10K 2210/3046
. . .
Multiple acoustic inputs, multiple acoustic outputs [2013-01]
G10K 2210/3047
. . .
Prediction, e.g. of future values of noise [2013-01]
G10K 2210/3048
. . .
Pretraining, e.g. to identify transfer functions [2013-01]
G10K 2210/3049
. . .
Random noise used, e.g. in model identification [2016-08]
G10K 2210/3051
. . .
Sampling, e.g. variable rate, synchronous, decimated or interpolated [2013-01]
G10K 2210/3052
. . .
Simulation [2013-01]
G10K 2210/3053
. . .
Speeding up computation or convergence, or decreasing the computational load [2013-01]
G10K 2210/3054
. . .
Stepsize variation [2013-01]
G10K 2210/3055
. . .
Transfer function of the acoustic system [2013-01]
G10K 2210/3056
. . .
Variable gain [2013-01]
G10K 2210/3057
. . .
Variation of parameters to test for optimisation [2013-01]
G10K 2210/321
. .
Physical [2013-01]
G10K 2210/3211
. . .
Active mounts for vibrating structures with means to actively suppress the vibration, e.g. for vehicles [2013-01]
G10K 2210/3212
. . .
Actuator details, e.g. composition or microstructure [2013-01]
G10K 2210/32121
. . . .
Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves [2013-01]
G10K 2210/3213
. . .
Automatic gain control [AGC] [2013-01]
G10K 2210/3214
. . .
Architectures, e.g. special constructional features or arrangements of features [2013-01]
G10K 2210/3215
. . .
Arrays, e.g. for beamforming [2013-01]
G10K 2210/3216
. . .
Cancellation means disposed in the vicinity of the source [2013-01]
G10K 2210/3217
. . .
Collocated sensor and cancelling actuator, e.g. "virtual earth" designs [2013-01]
G10K 2210/3218
. . .
Filters other than the algorithm-related filters [2013-01]
G10K 2210/3219
. . .
Geometry of the configuration [2013-01]
G10K 2210/3221
. . .
Headrests, seats or the like, for personal ANC systems [2013-01]
G10K 2210/3222
. . .
Manual tuning [2013-01]
G10K 2210/3223
. . .
Materials, e.g. special compositions or gases [2013-01]
G10K 2210/3224
. . .
Passive absorbers [2013-01]
G10K 2210/3225
. . .
Radio or other sources used in ANC for transfer function estimation; Means to avoid interference between desired signals, e.g. from a car stereo, and the ANC signal [2013-01]
G10K 2210/3226
. . .
Sensor details, e.g. for producing a reference or error signal [2013-01]
G10K 2210/3227
. . .
Resonators [2013-01]
G10K 2210/32271
. . . .
Active resonators [2013-01]
G10K 2210/32272
. . . .
Helmholtz resonators [2013-01]
G10K 2210/3228
. . .
Shunts [2013-01]
G10K 2210/3229
. . .
Transducers [2013-01]
G10K 2210/32291
. . . .
Plates or thin films, e.g. PVDF [2024-08]
G10K 2210/50
.
Miscellaneous [2013-01]
G10K 2210/501
. .
Acceleration, e.g. for accelerometers [2013-01]
G10K 2210/502
. .
Ageing, e.g. of the control system [2013-01]
G10K 2210/503
. .
Diagnostics; Stability; Alarms; Failsafe [2013-01]
G10K 2210/504
. .
Calibration [2013-01]
G10K 2210/505
. .
Echo cancellation, e.g. multipath-, ghost- or reverberation-cancellation [2013-01]
G10K 2210/506
. .
Feedback, e.g. howling [2013-01]
G10K 2210/507
. .
Flow or turbulence [2013-01]
G10K 2210/508
. .
Reviews on ANC in general, e.g. literature [2013-01]
G10K 2210/509
. .
Hybrid, i.e. combining different technologies, e.g. passive and active [2013-01]
G10K 2210/51
. .
Improving tonal quality, e.g. mimicking sports cars [2013-01]
G10K 2210/511
. .
Narrow band, e.g. implementations for single frequency cancellation [2013-01]
G10K 2210/512
. .
Wide band, e.g. non-recurring signals [2013-01]