G10K1/00	7	Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs (multi-toned musical instruments G10D13/08; automatic carillons G10F1/10)	G10K1/00	G10K1/00		49
G10K1/06	8	the resonating devices having the shape of a bell, plate, rod, or tube (bells for towers G10K1/28)	G10K1/06	G10K1/06		76
G10K1/062	9	electrically operated	G10K1/062	G10K1/062		357
G10K1/063	10	the sounding member being a bell	G10K1/063	G10K1/063		270
G10K1/064	11	Operating or striking mechanisms therefor	G10K1/064	G10K1/064		511
G10K1/0645	12	{provided with loudness adjustment}	G10K1/064	G10K1/064		181
G10K1/065	12	for timed or repeated operation	G10K1/065	G10K1/065		21
G10K1/066	10	the sounding member being a tube, plate or rod	G10K1/066	G10K1/066		169
G10K1/067	11	Operating or striking mechanisms therefor	G10K1/067	G10K1/067		123
G10K1/068	9	hydraulically operated; pneumatically operated	G10K1/068	G10K1/068		129
G10K1/07	9	mechanically operated; Hand bells; Bells for animals	G10K1/07	G10K1/07		383
G10K1/071	10	Hand bells; Bells for animals	G10K1/071	G10K1/071		187
G10K1/072	10	Operating or striking mechanisms therefor	G10K1/072	G10K1/072		405
G10K1/074	11	with rotary clappers or shells	G10K1/074	G10K1/074		218
G10K1/076	11	for timed or repeated operation	G10K1/076	G10K1/076		58
G10K1/08	9	Details or accessories of general applicability	G10K1/08	G10K1/08		68
G10K1/10	10	Sounding members; Mounting thereof; Clappers or other strikers	G10K1/10	G10K1/10		179
G10K1/26	10	Mountings; Casings	G10K1/26	G10K1/26		252
G10K1/28	8	Bells for towers or the like	G10K1/28	G10K1/28		9
G10K1/30	9	Details or accessories	G10K1/30	G10K1/30		15
G10K1/32	10	Sounding members; Clappers or other strikers	G10K1/32	G10K1/32		82
G10K1/34	10	Operating mechanisms	G10K1/34	G10K1/34		39
G10K1/341	11	{for a still-standing bell}	G10K1/34	G10K1/34		74
G10K1/342	12	{electrically operated}	G10K1/34	G10K1/34		45
G10K1/344	11	{for an oscillating bell which is driven once per cycle}	G10K1/34	G10K1/34		86
G10K1/345	12	{electrically operated}	G10K1/34	G10K1/34		70
G10K1/347	11	{for an oscillating bell which is driven twice per cycle}	G10K1/34	G10K1/34		27
G10K1/348	12	{electrically operated}	G10K1/34	G10K1/34		124
G10K1/36	10	Means for silencing or damping	G10K1/36	G10K1/36		36
G10K1/38	10	Supports; Mountings	G10K1/38	G10K1/38		28
G10K3/00	7	Rattles or like noise-producing devices {, e.g. door-knockers}	G10K3/00	G10K3/00		337
G10K5/00	7	Whistles	G10K5/00	G10K5/00		1143
G10K5/02	8	Ultrasonic whistles	G10K5/02	G10K5/02		184
G10K7/00	7	Sirens	G10K7/00	G10K7/00		156
G10K7/005	8	{Ultrasonic sirens}	G10K7/00	G10K7/00		53
G10K7/02	8	in which the sound-producing member is rotated manually or by a motor (G10K7/06 takes precedence)	G10K7/02	G10K7/02		135
G10K7/04	9	by an electric motor	G10K7/04	G10K7/04		205
G10K7/06	8	in which the sound-producing member is driven by a fluid, e.g. by a compressed gas	G10K7/06	G10K7/06		142
G10K9/00	7	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)	G10K9/00	G10K9/00		101
G10K9/02	8	driven by gas; e.g. suction operated	G10K9/02	G10K9/02		196
G10K9/04	9	by compressed gases, e.g. compressed air	G10K9/04	G10K9/04		719
G10K9/06	9	produced by detonation	G10K9/06	G10K9/06		10
G10K9/08	8	driven by water or other liquids	G10K9/08	G10K9/08		49
G10K9/10	8	driven by mechanical means only	G10K9/10	G10K9/10		540
G10K9/12	8	electrically operated<br><br><u>NOTE</u><br><br> This group does not cover the construction of, or circuits for, broadband-transducers such as loudspeakers or microphones, which are covered by subclass H04R. 	G10K9/12	G10K9/12		759
G10K9/121	9	{Flextensional transducers}	G10K9/12	G10K9/12		203
G10K9/122	9	using piezoelectric driving means {(G10K9/121 takes precedence)}	G10K9/122	G10K9/122		1038
G10K9/125	10	with a plurality of active elements	G10K9/125	G10K9/125		120
G10K9/128	9	using magnetostrictive driving means {(G10K9/121 takes precedence)}	G10K9/128	G10K9/128		31
G10K9/13	9	using electromagnetic driving means<br><br><u>NOTE</u><br><br>see provisionally also G10K9/12	G10K9/13	G10K9/13		807
G10K9/15	10	Self-interrupting arrangements	G10K9/15	G10K9/15		494
G10K9/16	9	with means for generating current by muscle power	G10K9/16	G10K9/16		5
G10K9/18	8	Details, e.g. bulbs, pumps, pistons, switches or casings	G10K9/18	G10K9/18		491
G10K9/20	9	Sounding members	G10K9/20	G10K9/20		336
G10K9/22	9	Mountings; Casings	G10K9/22	G10K9/22		989
G10K11/00	7	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	G10K11/00	G10K11/00		215
G10K11/002	8	{Devices for damping, suppressing, obstructing or conducting sound in acoustic devices (G10K1/06&#160;-&#160;G10K1/10 take precedence; for electro-mechanical transducers for communication H04R3/002)}	G10K11/00	G10K11/00		963
G10K11/004	8	{Mounting transducers, e.g. provided with mechanical moving or orienting device (mountings specially adapted to a particular sound-producing device, see the preceding groups G10K1/00&#160;-&#160;G10K9/00, e.g. G10K1/26, G10K1/28, G10K9/22; arrangements of sonic watch equipment on submarines B63G8/39; buoys B63B22/00)}	G10K11/00	G10K11/00		1212
G10K11/006	9	{Transducer mounting in underwater equipment, e.g. sonobuoys}	G10K11/00	G10K11/00		596
G10K11/008	10	{Arrays of transducers (seismic streamers, seeG01V1/20)}	G10K11/00	G10K11/00		215
G10K11/02	8	Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators	G10K11/02	G10K11/02		977
G10K11/025	9	{horns for impedance matching (see provisionally also G10K11/28)}	G10K11/02	G10K11/02		560
G10K11/04	9	Acoustic filters {; Acoustic resonators}	G10K11/04	G10K11/04		410
G10K11/08	8	Non-electric sound-amplifying devices, e.g. non-electric megaphones (amplifying by horns G10K11/02; amplifying by focusing G10K11/26)	G10K11/08	G10K11/08		401
G10K11/16	8	Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence)<br><br><u>NOTE</u><br><br>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.	G10K11/16	G10K11/16		4967
G10K11/161	9	{in systems with fluid flow (G10K11/162 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 F16L55/02; noise absorption in air conditioning and ventilation F24F13/24; silencing exhaust or propulsion jets in aircraft B64D33/06)}	G10K11/16	G10K11/16		1295
G10K11/162	9	Selection of materials	G10K11/162	G10K11/162		3835
G10K11/165	10	Particles in a matrix	G10K11/165	G10K11/165		476
G10K11/168	10	Plural layers of different materials, e.g. sandwiches<br><br><u>NOTE</u><br><br> When classifying in this group, classification is also made in subclass B32B, in so far as any layered product is concerned. 	G10K11/168	G10K11/168		2641
G10K11/172	9	using resonance effects	G10K11/172	G10K11/172		3182
G10K11/175	9	using interference effects; Masking sound<br><br><u>NOTE</u><br><br>Sound/noise masking, classified in G10K11/1752 - G10K11/1754,<br>Acoustic noise cancellation, classified in G10K11/178	G10K11/175	G10K11/175		912
G10K11/1752	10	{Masking}	G10K11/175	G10K11/175		403
G10K11/1754	11	{Speech masking}	G10K11/175	G10K11/175		200
G10K11/178	10	by electro-acoustically regenerating the original acoustic waves in anti-phase<br><br><u>NOTE</u><br><br>When classifying in any of the groups G10K11/1781 - G10K11/17861, classification is also made in at least one subgroup of G10K11/1787.	G10K11/178	G10K11/178		1885
G10K11/1781	11	{characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions}	G10K11/178	G10K11/178		474
G10K11/17813	12	{characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms}	G10K11/178	G10K11/178		298
G10K11/17815	13	{between the reference signals and the error signals, i.e. primary path}	G10K11/178	G10K11/178		286
G10K11/17817	13	{between the output signals and the error signals, i.e. secondary path}	G10K11/178	G10K11/178		677
G10K11/17819	13	{between the output signals and the reference signals, e.g. to prevent howling}	G10K11/178	G10K11/178		166
G10K11/17821	12	{characterised by the analysis of the input signals only}	G10K11/178	G10K11/178		629
G10K11/17823	13	{Reference signals, e.g. ambient acoustic environment}	G10K11/178	G10K11/178		1538
G10K11/17825	13	{Error signals}	G10K11/178	G10K11/178		727
G10K11/17827	13	{Desired external signals, e.g. pass-through audio such as music or speech}	G10K11/178	G10K11/178		324
G10K11/1783	11	{handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions}	G10K11/178	G10K11/178		427
G10K11/17833	12	{by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels}	G10K11/178	G10K11/178		307
G10K11/17835	13	{using detection of abnormal input signals}	G10K11/178	G10K11/178		147
G10K11/17837	12	{by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear}	G10K11/178	G10K11/178		317
G10K11/1785	11	{Methods, e.g. algorithms; Devices (G10K11/1781, G10K11/1783 take precedence)}	G10K11/178	G10K11/178		922
G10K11/17853	12	{of the filter}	G10K11/178	G10K11/178		894
G10K11/17854	13	{the filter being an adaptive filter}	G10K11/178	G10K11/178		1731
G10K11/17855	12	{for improving speed or power requirements}	G10K11/178	G10K11/178		340
G10K11/17857	12	{Geometric disposition, e.g. placement of microphones}	G10K11/178	G10K11/178		1813
G10K11/17861	12	{using additional means for damping sound, e.g. using sound absorbing panels}	G10K11/178	G10K11/178		497
G10K11/1787	11	{General system configurations}	G10K11/178	G10K11/178		486
G10K11/17873	12	{using a reference signal without an error signal, e.g. pure feedforward}	G10K11/178	G10K11/178		1196
G10K11/17875	12	{using an error signal without a reference signal, e.g. pure feedback}	G10K11/178	G10K11/178		673
G10K11/17879	12	{using both a reference signal and an error signal}	G10K11/178	G10K11/178		480
G10K11/17881	13	{the reference signal being an acoustic signal, e.g. recorded with a microphone}	G10K11/178	G10K11/178		1604
G10K11/17883	13	{the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed}	G10K11/178	G10K11/178		759
G10K11/17885	12	{additionally using a desired external signal, e.g. pass-through audio such as music or speech}<br><br><u>NOTE</u><br><br>When classifying in this group, classification is also made in the other appropriate groups under G10K11/1787.	G10K11/178	G10K11/178		874
G10K11/18	8	Methods or devices for transmitting, conducting or directing sound (G10K11/02, G10K11/36 take precedence)	G10K11/18	G10K11/18		405
G10K11/20	9	Reflecting arrangements (G10K11/28 takes precedence)	G10K11/20	G10K11/20		392
G10K11/205	10	{for underwater use}	G10K11/20	G10K11/20		157
G10K11/22	9	for conducting sound through hollow pipes, e.g. speaking tubes	G10K11/22	G10K11/22		678
G10K11/24	9	for conducting sound through solid bodies, e.g. wires	G10K11/24	G10K11/24		333
G10K11/26	9	Sound-focusing or directing, e.g. scanning	G10K11/26	G10K11/26		525
G10K11/28	10	using reflection, e.g. parabolic reflectors	G10K11/28	G10K11/28		772
G10K11/30	10	using refraction, e.g. acoustic lenses	G10K11/30	G10K11/30		695
G10K11/32	10	characterised by the shape of the source	G10K11/32	G10K11/32		426
G10K11/34	10	using electrical steering of transducer arrays, e.g. beam steering {(constructional aspects B06B1/0607, B06B1/085)}	G10K11/34	G10K11/34		406
G10K11/341	11	{Circuits therefor}	G10K11/34	G10K11/34		313
G10K11/343	12	{using frequency variation or different frequencies}	G10K11/34	G10K11/34		101
G10K11/345	12	{using energy switching from one active element to another}	G10K11/34	G10K11/34		274
G10K11/346	12	{using phase variation}	G10K11/34	G10K11/34		1044
G10K11/348	12	{using amplitude variation}	G10K11/34	G10K11/34		120
G10K11/35	10	using mechanical steering of transducers {or their beams}	G10K11/35	G10K11/35		61
G10K11/352	11	{by moving the transducer}	G10K11/35	G10K11/35		283
G10K11/355	12	{Arcuate movement}	G10K11/35	G10K11/35		387
G10K11/357	11	{by moving a reflector}	G10K11/35	G10K11/35		50
G10K11/36	8	Devices for manipulating acoustic surface waves (electro-acoustic amplifiers H03F13/00; networks comprising electro-acoustic elements H03H9/00)	G10K11/36	G10K11/36		363
G10K13/00	7	Cones, diaphragms, or the like, for emitting or receiving sound in general (for electromechanical transducers H04R7/00)	G10K13/00	G10K13/00		1657
G10K15/00	7	Acoustics not otherwise provided for	G10K15/00	G10K15/00		424
G10K15/02	8	Synthesis of acoustic waves (synthesis of speech G10L13/00)<br><br><u>NOTE</u><br><br>see provisionally G10H e.g. G10H1/26	G10K15/02	G10K15/02		1273
G10K15/04	8	Sound-producing devices (G10K15/02 takes precedence)	G10K15/04	G10K15/04		1459
G10K15/043	9	{producing shock waves (G10K15/046, G10K15/06 take precedence; generating seismic energy G01V1/02)}	G10K15/04	G10K15/04		249
G10K15/046	9	{using optical excitation, e.g. laser bundle}	G10K15/04	G10K15/04		131
G10K15/06	9	using electric discharge	G10K15/06	G10K15/06		248
G10K15/08	8	Arrangements for producing a reverberation or echo sound {(modifying acoustic properties to change reverberation time G10K11/002)}	G10K15/08	G10K15/08		303
G10K15/10	9	using time-delay networks comprising electromechanical or electro-acoustic devices	G10K15/10	G10K15/10		356
G10K15/12	9	using electronic time-delay networks	G10K15/12	G10K15/12		316
G10K2200/00	7	Details of methods or devices for transmitting, conducting or directing sound in general	CPCONLY	G10K2200/00		1
G10K2200/10	8	Beamforming, e.g. time reversal, phase conjugation or similar	CPCONLY	G10K2200/10		48
G10K2200/11	8	Underwater, e.g. transducers for generating acoustic waves underwater	CPCONLY	G10K2200/11		97
G10K2210/00	7	Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups	CPCONLY	G10K2210/00		8
G10K2210/10	8	Applications	CPCONLY	G10K2210/10		119
G10K2210/101	9	One dimensional	CPCONLY	G10K2210/101		45
G10K2210/102	9	Two dimensional	CPCONLY	G10K2210/102		27
G10K2210/103	9	Three dimensional	CPCONLY	G10K2210/103		46
G10K2210/104	9	Aircos	CPCONLY	G10K2210/104		54
G10K2210/105	9	Appliances, e.g. washing machines or dishwashers	CPCONLY	G10K2210/105		117
G10K2210/1051	10	Camcorder	CPCONLY	G10K2210/1051		5
G10K2210/1052	10	Copiers or other image-forming apparatus, e.g. laser printer	CPCONLY	G10K2210/1052		15
G10K2210/1053	10	Hi-fi, i.e. anything involving music, radios or loudspeakers	CPCONLY	G10K2210/1053		93
G10K2210/1054	10	Refrigerators	CPCONLY	G10K2210/1054		35
G10K2210/106	9	Boxes, i.e. active box covering a noise source; Enclosures	CPCONLY	G10K2210/106		86
G10K2210/107	9	Combustion, e.g. burner noise control of jet engines	CPCONLY	G10K2210/107		41
G10K2210/108	9	Communication systems, e.g. where useful sound is kept and noise is cancelled	CPCONLY	G10K2210/108		356
G10K2210/1081	10	Earphones, e.g. for telephones, ear protectors or headsets	CPCONLY	G10K2210/1081		1400
G10K2210/1082	10	Microphones, e.g. systems using "virtual" microphones	CPCONLY	G10K2210/1082		169
G10K2210/109	9	Compressors, e.g. fans	CPCONLY	G10K2210/109		134
G10K2210/11	9	Computers, i.e. ANC of the noise created by cooling fan, hard drive or the like	CPCONLY	G10K2210/11		77
G10K2210/111	9	Directivity control or beam pattern	CPCONLY	G10K2210/111		111
G10K2210/112	9	Ducts	CPCONLY	G10K2210/112		241
G10K2210/113	9	Elevators	CPCONLY	G10K2210/113		7
G10K2210/114	9	Feeders, i.e. of the vibrating kind	CPCONLY	G10K2210/114		6
G10K2210/115	9	Impact noise, e.g. from typewriter or printer	CPCONLY	G10K2210/115		14
G10K2210/116	9	Medical; Dental	CPCONLY	G10K2210/116		96
G10K2210/1161	10	NMR or MRI	CPCONLY	G10K2210/1161		29
G10K2210/117	9	Nonlinear	CPCONLY	G10K2210/117		16
G10K2210/118	9	Panels, e.g. active sound-absorption panels or noise barriers	CPCONLY	G10K2210/118		139
G10K2210/119	9	Radiation control, e.g. control of sound radiated by vibrating structures	CPCONLY	G10K2210/119		18
G10K2210/12	9	Rooms, e.g. ANC inside a room, office, concert hall or automobile cabin	CPCONLY	G10K2210/12		387
G10K2210/121	9	Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general	CPCONLY	G10K2210/121		344
G10K2210/122	9	Seismics	CPCONLY	G10K2210/122		4
G10K2210/123	9	Synchrophasors or other applications where multiple noise sources are driven with a particular phase relationship	CPCONLY	G10K2210/123		22
G10K2210/124	9	Traffic	CPCONLY	G10K2210/124		46
G10K2210/125	9	Transformers	CPCONLY	G10K2210/125		49
G10K2210/126	9	Transients	CPCONLY	G10K2210/126		3
G10K2210/127	9	Underwater acoustics, e.g. for submarine	CPCONLY	G10K2210/127		89
G10K2210/128	9	Vehicles	CPCONLY	G10K2210/128		255
G10K2210/1281	10	Aircraft, e.g. spacecraft, airplane or helicopter	CPCONLY	G10K2210/1281		279
G10K2210/1282	10	Automobiles	CPCONLY	G10K2210/1282		1378
G10K2210/12821	11	Rolling noise; Wind and body noise	CPCONLY	G10K2210/12821		237
G10K2210/12822	11	Exhaust pipes or mufflers	CPCONLY	G10K2210/12822		167
G10K2210/1283	10	Trains, trams or the like	CPCONLY	G10K2210/1283		91
G10K2210/129	9	Vibration, e.g. instead of, or in addition to, acoustic noise	CPCONLY	G10K2210/129		257
G10K2210/1291	10	Anti-Vibration-Control, e.g. reducing vibrations in panels or beams	CPCONLY	G10K2210/1291		162
G10K2210/30	8	Means	CPCONLY	G10K2210/30		15
G10K2210/301	9	Computational	CPCONLY	G10K2210/301		15
G10K2210/3011	10	Single acoustic input	CPCONLY	G10K2210/3011		209
G10K2210/3012	10	Algorithms	CPCONLY	G10K2210/3012		189
G10K2210/3013	10	Analogue, i.e. using analogue computers or circuits	CPCONLY	G10K2210/3013		62
G10K2210/3014	10	Adaptive noise equalizers [ANE], i.e. where part of the unwanted sound is retained	CPCONLY	G10K2210/3014		61
G10K2210/3015	10	Averaging, e.g. exponential	CPCONLY	G10K2210/3015		9
G10K2210/3016	10	Control strategies, e.g. energy minimization or intensity measurements	CPCONLY	G10K2210/3016		137
G10K2210/3017	10	Copy, i.e. whereby an estimated transfer function in one functional block is copied to another block	CPCONLY	G10K2210/3017		43
G10K2210/3018	10	Correlators, e.g. convolvers or coherence calculators	CPCONLY	G10K2210/3018		59
G10K2210/3019	10	Cross-terms between multiple in&apos;s and out&apos;s	CPCONLY	G10K2210/3019		64
G10K2210/3021	10	Eigenfrequencies; Eigenvalues, e.g. used to identify most significant couplings between actuators and sensors	CPCONLY	G10K2210/3021		12
G10K2210/3022	10	Error paths	CPCONLY	G10K2210/3022		49
G10K2210/3023	10	Estimation of noise, e.g. on error signals	CPCONLY	G10K2210/3023		96
G10K2210/30231	11	Sources, e.g. identifying noisy processes or components	CPCONLY	G10K2210/30231		145
G10K2210/30232	11	Transfer functions, e.g. impulse response	CPCONLY	G10K2210/30232		188
G10K2210/3024	10	Expert systems, e.g. artificial intelligence	CPCONLY	G10K2210/3024		35
G10K2210/3025	10	Determination of spectrum characteristics, e.g. FFT	CPCONLY	G10K2210/3025		253
G10K2210/3026	10	Feedback	CPCONLY	G10K2210/3026		739
G10K2210/3027	10	Feedforward	CPCONLY	G10K2210/3027		617
G10K2210/3028	10	Filtering, e.g. Kalman filters or special analogue or digital filters	CPCONLY	G10K2210/3028		952
G10K2210/30281	11	Lattice filters	CPCONLY	G10K2210/30281		5
G10K2210/3029	10	Fuzzy logic; Genetic algorithms	CPCONLY	G10K2210/3029		13
G10K2210/3031	10	Hardware, e.g. architecture	CPCONLY	G10K2210/3031		76
G10K2210/3032	10	Harmonics or sub-harmonics	CPCONLY	G10K2210/3032		120
G10K2210/3033	10	Information contained in memory, e.g. stored signals or transfer functions	CPCONLY	G10K2210/3033		181
G10K2210/3034	10	Integrators	CPCONLY	G10K2210/3034		4
G10K2210/3035	10	Models, e.g. of the acoustic system	CPCONLY	G10K2210/3035		103
G10K2210/30351	11	Identification of the environment for applying appropriate model characteristics	CPCONLY	G10K2210/30351		64
G10K2210/3036	10	Modes, e.g. vibrational or spatial modes	CPCONLY	G10K2210/3036		49
G10K2210/3037	10	Monitoring various blocks in the flow chart	CPCONLY	G10K2210/3037		15
G10K2210/3038	10	Neural networks	CPCONLY	G10K2210/3038		205
G10K2210/3039	10	Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain	CPCONLY	G10K2210/3039		105
G10K2210/30391	11	Resetting of the filter parameters or changing the algorithm according to prevailing conditions	CPCONLY	G10K2210/30391		56
G10K2210/3041	10	Offline	CPCONLY	G10K2210/3041		24
G10K2210/3042	10	Parallel processing	CPCONLY	G10K2210/3042		58
G10K2210/3043	10	Phase locked loops [PLL]	CPCONLY	G10K2210/3043		6
G10K2210/3044	10	Phase shift, e.g. complex envelope processing	CPCONLY	G10K2210/3044		293
G10K2210/3045	10	Multiple acoustic inputs, single acoustic output	CPCONLY	G10K2210/3045		309
G10K2210/3046	10	Multiple acoustic inputs, multiple acoustic outputs	CPCONLY	G10K2210/3046		361
G10K2210/3047	10	Prediction, e.g. of future values of noise	CPCONLY	G10K2210/3047		66
G10K2210/3048	10	Pretraining, e.g. to identify transfer functions	CPCONLY	G10K2210/3048		68
G10K2210/3049	10	Random noise used, e.g. in model identification	CPCONLY	G10K2210/3049		65
G10K2210/3051	10	Sampling, e.g. variable rate, synchronous, decimated or interpolated	CPCONLY	G10K2210/3051		92
G10K2210/3052	10	Simulation	CPCONLY	G10K2210/3052		24
G10K2210/3053	10	Speeding up computation or convergence, or decreasing the computational load	CPCONLY	G10K2210/3053		86
G10K2210/3054	10	Stepsize variation	CPCONLY	G10K2210/3054		29
G10K2210/3055	10	Transfer function of the acoustic system	CPCONLY	G10K2210/3055		195
G10K2210/3056	10	Variable gain	CPCONLY	G10K2210/3056		199
G10K2210/3057	10	Variation of parameters to test for optimisation	CPCONLY	G10K2210/3057		20
G10K2210/321	9	Physical	CPCONLY	G10K2210/321		30
G10K2210/3211	10	Active mounts for vibrating structures with means to actively suppress the vibration, e.g. for vehicles	CPCONLY	G10K2210/3211		70
G10K2210/3212	10	Actuator details, e.g. composition or microstructure	CPCONLY	G10K2210/3212		175
G10K2210/32121	11	Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves	CPCONLY	G10K2210/32121		27
G10K2210/3213	10	Automatic gain control [AGC]	CPCONLY	G10K2210/3213		41
G10K2210/3214	10	Architectures, e.g. special constructional features or arrangements of features	CPCONLY	G10K2210/3214		347
G10K2210/3215	10	Arrays, e.g. for beamforming	CPCONLY	G10K2210/3215		88
G10K2210/3216	10	Cancellation means disposed in the vicinity of the source	CPCONLY	G10K2210/3216		151
G10K2210/3217	10	Collocated sensor and cancelling actuator, e.g. "virtual earth" designs	CPCONLY	G10K2210/3217		96
G10K2210/3218	10	Filters other than the algorithm-related filters	CPCONLY	G10K2210/3218		23
G10K2210/3219	10	Geometry of the configuration	CPCONLY	G10K2210/3219		281
G10K2210/3221	10	Headrests, seats or the like, for personal ANC systems	CPCONLY	G10K2210/3221		204
G10K2210/3222	10	Manual tuning	CPCONLY	G10K2210/3222		38
G10K2210/3223	10	Materials, e.g. special compositions or gases	CPCONLY	G10K2210/3223		220
G10K2210/3224	10	Passive absorbers	CPCONLY	G10K2210/3224		150
G10K2210/3225	10	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	CPCONLY	G10K2210/3225		30
G10K2210/3226	10	Sensor details, e.g. for producing a reference or error signal	CPCONLY	G10K2210/3226		119
G10K2210/3227	10	Resonators	CPCONLY	G10K2210/3227		104
G10K2210/32271	11	Active resonators	CPCONLY	G10K2210/32271		37
G10K2210/32272	11	Helmholtz resonators	CPCONLY	G10K2210/32272		115
G10K2210/3228	10	Shunts	CPCONLY	G10K2210/3228		7
G10K2210/3229	10	Transducers	CPCONLY	G10K2210/3229		89
G10K2210/32291	11	Plates or thin films, e.g. PVDF	CPCONLY	G10K2210/32291		59
G10K2210/50	8	Miscellaneous	CPCONLY	G10K2210/50		3
G10K2210/501	9	Acceleration, e.g. for accelerometers	CPCONLY	G10K2210/501		98
G10K2210/502	9	Ageing, e.g. of the control system	CPCONLY	G10K2210/502		11
G10K2210/503	9	Diagnostics; Stability; Alarms; Failsafe	CPCONLY	G10K2210/503		198
G10K2210/504	9	Calibration	CPCONLY	G10K2210/504		81
G10K2210/505	9	Echo cancellation, e.g. multipath-, ghost- or reverberation-cancellation	CPCONLY	G10K2210/505		128
G10K2210/506	9	Feedback, e.g. howling	CPCONLY	G10K2210/506		85
G10K2210/507	9	Flow or turbulence	CPCONLY	G10K2210/507		23
G10K2210/508	9	Reviews on ANC in general, e.g. literature	CPCONLY	G10K2210/508		10
G10K2210/509	9	Hybrid, i.e. combining different technologies, e.g. passive and active	CPCONLY	G10K2210/509		104
G10K2210/51	9	Improving tonal quality, e.g. mimicking sports cars	CPCONLY	G10K2210/51		125
G10K2210/511	9	Narrow band, e.g. implementations for single frequency cancellation	CPCONLY	G10K2210/511		136
G10K2210/512	9	Wide band, e.g. non-recurring signals	CPCONLY	G10K2210/512		65
