СПИСОК патентов США - подгруппа МПК16 H04R5/04
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№ п/п | Номер патента | Название патента | |||
2017 | |||||
1 | 9609454 | Method for playing back the sound of a digital audio signal | |||
2 | 9609425 | Detection circuit | |||
3 | 9609418 | Signal processing circuit | |||
4 | 9602941 | Jack detector and jack detecting method | |||
5 | 9602929 | Techniques for presenting sound effects on a portable media player | |||
6 | 9596437 | Audio focusing via multiple microphones | |||
7 | 9591426 | Method and apparatus for an ultrasonic emitter system floor audio unit | |||
8 | 9591423 | Nonlinear power supply ramping for pop-click noise reduction | |||
9 | 9591419 | Headphone listening apparatus | |||
10 | 9591396 | Ear set device | |||
11 | 9589573 | Wind noise reduction | |||
12 | 9589478 | Natural orientation induction tool apparatus and method | |||
13 | 9584943 | Method and apparatus for processing audio signals | |||
14 | 9584933 | Method and apparatus for localization of streaming sources in hearing assistance system | |||
15 | 9584920 | System for fitting audio signals for in-use ear | |||
16 | 9584919 | Interface switching system and method for switching operation mode | |||
17 | 9584918 | Dynamic volume control and multi-spatial processing protection | |||
18 | 9584917 | Microphone unit, pocket transmitter and wireless audio system | |||
19 | 9584905 | Audio signal mixing | |||
20 | 9584083 | Loudness modification of multichannel audio signals | |||
21 | 9578440 | Method for controlling a speaker array to provide spatialized, localized, and binaural virtual surround sound | |||
22 | 9578437 | Method and apparatus for processing audio signals | |||
23 | 9578420 | Audio control circuit capable of processing both digital and analog audio signals | |||
24 | 9578419 | Method and apparatus for estimating spatial content of soundfield at desired location | |||
25 | 9578417 | Systems and methods for detection of load impedance of a transducer device coupled to an audio device | |||
26 | 9578411 | Electronic device having noise removal function | |||
27 | 9578410 | Sound reproduction device | |||
28 | 9577710 | Engaging terminal devices | |||
29 | 9571929 | Sound accessory device and operating method thereof | |||
30 | 9571924 | Speaker array apparatus and method for setting speaker array apparatus | |||
31 | 9570089 | Hearing system and transmission method | |||
32 | 9570058 | Audio signal processing device and parameter adjusting method | |||
33 | 9565496 | Sound reproduction device | |||
34 | 9565314 | Spatial multiplexing in a soundfield teleconferencing system | |||
35 | 9560450 | Speaker array apparatus | |||
36 | 9560449 | Distributed wireless speaker system | |||
37 | 9559656 | System for adjusting loudness of audio signals in real time | |||
38 | 9555738 | Audio control system and method for a vehicle having a warning function | |||
39 | 9554211 | Wireless speaker unit | |||
40 | 9549260 | Headphones for stereo tactile vibration, and related systems and methods | |||
41 | 9549258 | Audio output balancing | |||
42 | 9544707 | Audio output balancing | |||
43 | 9544705 | Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources | |||
44 | 9544703 | Detection of device configuration | |||
45 | 9544689 | Wireless speaker system | |||
46 | 9544685 | 5 GHz wireless stereo sound system | |||
47 | 9538289 | Control parameter dependent audio signal processing | |||
48 | 9538288 | Sound field correction apparatus, control method thereof, and computer-readable storage medium | |||
49 | 9538011 | Mobile microphone system portal app for meetings | |||
2016 | |||||
50 | 9528833 | Navigation apparatus | |||
51 | 9525931 | Playback based on received sound waves | |||
52 | 9525387 | Amplifier docking audio system for vehicle | |||
53 | 9521502 | Method for determining a stereo signal | |||
54 | 9521489 | Operation using positioning information | |||
55 | 9521488 | Playback device setting based on distortion | |||
56 | 9521487 | Calibration adjustment based on barrier | |||
57 | 9516445 | Media content based on playback zone awareness | |||
58 | 9516419 | Playback device setting according to threshold(s) | |||
59 | 9516418 | Sound field spatial stabilizer | |||
60 | 9516417 | Boundary binaural microphone array | |||
61 | 9516405 | Multimedia playing system and sound channel control method thereof | |||
62 | 9513866 | Noise cancellation with enhancement of danger sounds | |||
63 | 9510096 | Noise energy controlling in noise reduction system with two microphones | |||
64 | 9507560 | Device playback failure recovery and redistribution | |||
65 | 9503831 | Audio playback method and apparatus | |||
66 | 9503819 | Progressive audio balance and fade in a multi-zone listening environment | |||
67 | 9503803 | Collaboratively processing audio between headset and source to mask distracting noise | |||
68 | 9497579 | Adapter device to allow the monitoring of media exposure on consumer devices | |||
69 | 9491549 | Equalizer apparatus | |||
70 | 9491532 | Adapter device to allow the monitoring of media exposure on consumer devices | |||
71 | 9479888 | Methods and apparatus for implementing sound events | |||
72 | 9479869 | Systems and methods for detection of load impedance of a transducer device coupled to an audio device | |||
73 | 9479868 | Systems and methods for detection of load impedance of a transducer device coupled to an audio device | |||
74 | 9479863 | Combo-jack detecting circuit | |||
75 | 9479860 | Systems and methods for enhancing performance of audio transducer based on detection of transducer status | |||
76 | 9473852 | Pre-processing of a channelized music signal | |||
77 | 9468401 | Method and system for self-managed sound enhancement | |||
78 | 9467791 | System and method for adaptive audio signal generation, coding and rendering | |||
79 | 9467781 | Headset loop antenna for audio devices | |||
80 | 9467780 | DJ mixing headphones | |||
81 | 9466312 | Method for separating audio sources and audio system using the same | |||
82 | 9462387 | Audio system and method of operation therefor | |||
83 | 9462386 | Wired, wireless, infrared, and powerline audio entertainment systems | |||
84 | 9462384 | Nomadic device for controlling one or more portable speakers | |||
85 | 9462330 | Multimedia audio inserter | |||
86 | 9460727 | Audio encoder for wind and microphone noise reduction in a microphone array system | |||
87 | 9451350 | Earphone device | |||
88 | 9445214 | Maintaining a fixed sound localization point of a voice during a telephone call for a moving person | |||
89 | 9445205 | Dynamic hearing aid system and a method for configuring the hearing aid system | |||
90 | 9445199 | Method and apparatus for determining dominant sound source directions in a higher order Ambisonics representation of a sound field | |||
91 | 9445195 | Directivity control method and device | |||
92 | 9445168 | Electronic device and direction switching method of the electronic device | |||
93 | 9439022 | Playback device speaker configuration based on proximity detection | |||
94 | 9439021 | Proximity detection using audio pulse | |||
95 | 9438983 | Signal processing circuit and associated signal processing method applied to headset | |||
96 | 9438982 | Systems and methods for detection of load impedance of a transducer device coupled to an audio device | |||
97 | 9438976 | Multifunctional wireless LED device and a multifunctional wireless speaker system | |||
98 | 9438963 | Wireless audio transmission method and device | |||
99 | 9432772 | Methods and apparatus for porting loudspeakers to an earpiece | |||
100 | 9426600 | Audio precompensation controller design with pairwise loudspeaker channel similarity | |||
101 | 9426575 | Apparatus and method of reproducing virtual sound of two channels based on listener's position | |||
102 | 9426574 | Automatic audio source switching | |||
103 | 9426573 | Sound field encoder | |||
104 | 9420381 | Multimedia playing apparatus and method for outputting modulated sound according to hearing characteristic of user | |||
105 | 9420375 | Method, apparatus, and computer program product for categorical spatial analysis-synthesis on spectrum of multichannel audio signals | |||
106 | 9420373 | Display apparatus, hearing level control apparatus, and method for correcting sound | |||
107 | 9420369 | Processing method for earphone and user equipment | |||
108 | 9418672 | Navigation application with adaptive instruction text | |||
109 | 9414174 | Method and apparatus for controlling audio output | |||
110 | 9413316 | Asymmetric polynomial psychoacoustic bass enhancement | |||
111 | 9407987 | Audio interface self-adaptation device | |||
112 | 9407738 | Providing isolation from distractions | |||
113 | 9402129 | Audio control method and audio player using audio control method | |||
114 | 9400632 | Playback according to playback responsibility in stereo pair | |||
115 | 9398392 | Audio calibration and adjustment | |||
116 | 9398391 | Stereo widening over arbitrarily-configured loudspeakers | |||
117 | 9392350 | Audio communication system with merging and demerging communications zones | |||
118 | 9391580 | Ambient audio injection | |||
119 | 9386391 | Switching between binaural and monaural modes | |||
120 | 9386389 | Audio signal processing device | |||
121 | 9386386 | System and method for audio enhancement of a consumer electronics device | |||
122 | 9386371 | Psychoacoustic adaptive notch filtering | |||
123 | 9380389 | Multipath interference reduction | |||
124 | 9380388 | Channel crosstalk removal | |||
125 | 9380387 | Phase independent surround speaker | |||
126 | 9380371 | Apparatus and method for recognizing earphone mounting in portable terminal | |||
127 | 9374642 | Multipurpose connector for multiplexing headset interface into high-definition video and audio interface, and handheld electronic device | |||
128 | 9374640 | Method and system for optimizing center channel performance in a single enclosure multi-element loudspeaker line array | |||
129 | 9374639 | Audio apparatus and method of changing sound emission mode | |||
130 | 9374636 | Hearing device, method and system for automatically enabling monitoring mode within said hearing device | |||
131 | 9374549 | Head mounted display and method of outputting audio signal using the same | |||
132 | 9369803 | Apparatus and method for removing noise | |||
133 | 9369104 | Audio output balancing | |||
134 | 9367611 | Detecting improper position of a playback device | |||
135 | 9363603 | Surround audio dialog balance assessment | |||
136 | 9363601 | Audio output balancing | |||
137 | 9363590 | Playback device | |||
138 | 9362689 | System and method for detecting the ground and microphone input contacts in an audio plug | |||
139 | 9361902 | Earhole-wearable sound collection device, signal processing device, and sound collection method | |||
140 | 9357322 | Loudspeaker polarity detector | |||
141 | 9357320 | Headphone listening apparatus | |||
142 | 9357309 | Orientation based dynamic audio control | |||
143 | 9357308 | System and method for dynamic control of audio playback based on the position of a listener | |||
144 | 9357307 | Multi-channel wind noise suppression system and method | |||
145 | 9357303 | Speaker apparatus | |||
146 | 9357297 | Audio signal adapter device and system for transmitting audio signal | |||
147 | 9356658 | Method and apparatus for controlling and powering an electronic accessory from a mobile digital device | |||
148 | 9356572 | Sound processing apparatus, sound system and sound processing method | |||
149 | 9351077 | Systems and methods for independent and control-isolated audio processing (ICIAP) | |||
150 | 9351076 | Audio and video signal transmission interface apparatus and method thereof | |||
151 | 9351068 | Obstructed port audio signal alteration | |||
152 | 9344829 | Indication of barrier detection | |||
153 | 9344802 | Information providing system | |||
154 | 9344799 | Audio apparatus | |||
155 | 9344790 | Audio signal receiving device, audio signal adapter device and system for transmitting audio signal | |||
156 | 9338570 | Method and apparatus for an integrated headset switch with reduced crosstalk noise | |||
157 | 9338565 | Listening system adapted for real-time communication providing spatial information in an audio stream | |||
158 | 9338555 | Earphones and hearing aids with equalization | |||
159 | 9338541 | Method and system for in-game visualization based on audio analysis | |||
160 | 9338536 | Modular headrest-based audio system | |||
161 | 9332360 | Compression and mixing for hearing assistance devices | |||
162 | 9332350 | Earphone pulling and plugging detection circuit | |||
163 | 9332348 | Media content request including zone name | |||
164 | 9332211 | Mobile terminal and audio zooming method thereof | |||
165 | 9326379 | Magnetically enhanced electrical signal conduction apparatus and methods | |||
166 | 9326085 | Device and method for generating an ambience signal | |||
167 | 9326073 | FM filtering for class-G/H headphones | |||
168 | 9326071 | Media content suggestion based on playback zone awareness | |||
169 | 9326070 | Media content based on playback zone awareness | |||
170 | 9325815 | Cordless telephone apparatus and control method of the same | |||
171 | 9323697 | Computer system audio device switching | |||
172 | 9319780 | Smart passive speaker drive | |||
173 | 9313574 | Wireless digital transmission system for loudspeakers | |||
174 | 9313566 | Acoustic equipment | |||
175 | 9312829 | System for adjusting loudness of audio signals in real time | |||
176 | 9301085 | Computer headset with detachable 4G radio | |||
177 | 9301031 | Modular speaker system, components of a modular speaker system, and methods of using the same | |||
178 | 9294862 | Method and apparatus for processing audio signals using motion of a sound source, reverberation property, or semantic object | |||
179 | 9288567 | Audio phone connection mount for touch pen | |||
180 | 9282408 | Processing method and processing apparatus for stereo audio output enhancement | |||
181 | 9282404 | Handset microphone | |||
182 | 9282391 | Method and apparatus for recognizing earphone in portable terminal | |||
183 | 9282196 | Moving a sound localization point of a computer program during a voice exchange | |||
184 | 9281795 | Acoustic signal processing apparatus | |||
185 | 9277340 | Sound output system, information processing apparatus, computer-readable non-transitory storage medium having information processing program stored therein, and sound output control method | |||
186 | 9277322 | System for optimizing the perceived sound quality in virtual sound zones | |||
187 | 9277321 | Device discovery and constellation selection | |||
188 | 9271081 | Method and device for enhanced sound field reproduction of spatially encoded audio input signals | |||
189 | 9271080 | Audio spatialization and environment simulation | |||
190 | 9271076 | Enhanced stereophonic audio recordings in handheld devices | |||
191 | 9270242 | Sound volume adjusting apparatus | |||
192 | 9264823 | Audio headset with automatic equalization | |||
193 | 9264800 | Audio signal processing apparatus and audio signal processing method | |||
194 | 9264158 | Audio signal processing apparatus | |||
195 | 9263055 | Systems and methods for three-dimensional audio CAPTCHA | |||
196 | 9253575 | Power management system and method thereof | |||
197 | 9253574 | Direct-diffuse decomposition | |||
198 | 9253564 | Noise-canceling headphone depletion-mode switch | |||
199 | 9247336 | Apparatus and method for confirming control information of earphone in portable terminal | |||
200 | 9247192 | Mobile terminal and audio zooming method thereof | |||
201 | 9241219 | Audio device and portable electronic device | |||
202 | 9241218 | Apparatus and method for decomposing an input signal using a pre-calculated reference curve | |||
203 | 9237401 | Electronic devices with adjustable bias impedances and adjustable bias voltages for accessories | |||
204 | 9232334 | Apparatus and method for processing multi-channel audio signal using space information | |||
205 | 9232146 | Imaging device with processing to change sound data | |||
206 | 9230556 | Voice instructions during navigation | |||
2015 | |||||
207 | 9226091 | Acoustic surround immersion control system and method | |||
208 | 9226087 | Audio output balancing during synchronized playback | |||
209 | 9226072 | Media content based on playback zone awareness | |||
210 | 9223538 | Interactive sound reproducing | |||
211 | 9219974 | Method and apparatus for simultaneously controlling near sound field and far sound field | |||
212 | 9215541 | Apparatus for detecting type of audio interface | |||
213 | 9215530 | Augmented reality system | |||
214 | 9215529 | Multi-mode audio device interfacing | |||
215 | 9215528 | Flat panel electronic device and audio playing apparatus thereof | |||
216 | 9214916 | Acoustic processing device | |||
217 | 9213762 | Operation using positioning information | |||
218 | 9210524 | Aircraft audio panel routing | |||
219 | 9210500 | Headset type detection and configuration techniques | |||
220 | 9204220 | RFID transceiver for remote control | |||
221 | 9197977 | Audio spatialization and environment simulation | |||
222 | 9197971 | Personalized hearing profile generation with real-time feedback | |||
223 | 9197964 | Amplifier unit and mobile electronic device provided with the amplifier unit | |||
224 | 9191744 | Intelligent ambient sound monitoring system | |||
225 | 9191742 | Enhancing audio at a network-accessible computing platform | |||
226 | 9185490 | Single enclosure surround sound loudspeaker system and method | |||
227 | 9179233 | Apparatus and method for interfacing earphone | |||
228 | 9179218 | Mobile device for multi-channel sound collection and output using common connector, and driving method thereof | |||
229 | 9179215 | Electronic device, accessory, and method for detecting an accessory | |||
230 | 9173032 | Methods of using head related transfer function (HRTF) enhancement for improved vertical-polar localization in spatial audio systems | |||
231 | 9173031 | Apparatus and method for amplification of audio content | |||
232 | 9167349 | Method and apparatus for reproducing multi-channel sound using cable/wireless device | |||
233 | 9167344 | Spectrally uncolored optimal crosstalk cancellation for audio through loudspeakers | |||
234 | 9164724 | Audio adjustment system | |||
235 | 9164561 | Method for sourcing current using an audio jack | |||
236 | 9161133 | Crosstalk reduction in a headset | |||
237 | 9161132 | Audio processing apparatus with selection to and from multi-room mode | |||
238 | 9161131 | Stereo audio headphone apparatus for a user having a hearing loss and related methods | |||
239 | 9154881 | Digital audio processing system and method | |||
240 | 9154880 | Apparatus and a method for controlling a sound field | |||
241 | 9154879 | Method and apparatus for processing audio signal and audio playback system | |||
242 | 9154878 | Interconnected speaker system | |||
243 | 9154875 | Device for and method of processing an audio data stream | |||
244 | 9154872 | Multiple input audio switch | |||
245 | 9154868 | Noise cancellation system | |||
246 | 9154185 | Managing audio output through an intermediary | |||
247 | 9143864 | Audio playback system | |||
248 | 9143863 | Apparatus, systems and methods for inaudibly identifying an audio accessory using spectral shaping | |||
249 | 9143862 | Correlation based filter adaptation | |||
250 | 9143861 | Wireless audio player and speaker system | |||
251 | 9143104 | Audio signal processing circuit, car audio apparatus using the same, audio component apparatus, electronic device and output audio signal generating method | |||
252 | 9137604 | Audio processing apparatus | |||
253 | 9135797 | Audio detection using distributed mobile computing | |||
254 | 9131317 | Sharing public addressing system using personal communication devices in an ad-hoc network | |||
255 | 9131316 | Sharing public addressing system using personal communication devices in an ad-hoc network | |||
256 | 9131307 | Noise eliminating device, noise eliminating method, and noise eliminating program | |||
257 | 9131306 | Apparatus including means for connecting to one or more outer speakers as well as means for detecting such a connection | |||
258 | 9129291 | Personalized sound management and method | |||
259 | 9124983 | Method and apparatus for localization of streaming sources in hearing assistance system | |||
260 | 9124971 | Audio signal processing circuit for reducing zero crossing distortion and method thereof | |||
261 | 9124970 | System and method for using a headset jack to control electronic device functions | |||
262 | 9124709 | Circuit apparatus for recognizing earphone in mobile terminal | |||
263 | 9119005 | Connection diagnostics for parallel speakers | |||
264 | 9113257 | Phase-unified loudspeakers: parallel crossovers | |||
265 | 9113247 | Device and method for direction dependent spatial noise reduction | |||
266 | 9107011 | Headset with fit detection system | |||
267 | 9103866 | Device plug detection apparatus and method | |||
268 | 9094767 | Headset plug universal auto switcher | |||
269 | 9094754 | Reduction of spurious uncorrelation in FM radio noise | |||
270 | 9094752 | Apparatus and method for generating directional sound | |||
271 | 9094751 | Headphone apparatus and audio driving apparatus thereof | |||
272 | 9084035 | System and method of detecting a plug-in type based on impedance comparison | |||
273 | 9078058 | Applications for a two-way wireless speaker system | |||
274 | 9075127 | Head tracking system | |||
275 | 9071906 | Wireless audio player and speaker system | |||
276 | 9071900 | Multi-channel recording | |||
277 | 9066182 | Audio processing apparatus | |||
278 | 9066178 | Audio processing apparatus | |||
279 | 9060228 | Accessory detection circuit with improved functionality | |||
280 | 9055371 | Controllable playback system offering hierarchical playback options | |||
281 | 9054656 | Output coupling capacitor free audio power amplifier dynamically configured for speakers and headphones with excellent click and pop performance | |||
2014 | |||||
282 | 8831245 | Method and device for modifying the sound volume of an audio alarm signal onboard an aircraft | |||
283 | 8793125 | Method and device for decorrelation and upmixing of audio channels | |||
284 | 8705751 | Compression and mixing for hearing assistance devices | |||
2013 | |||||
285 | 8494171 | Energy saving PWM sound device | |||
286 | 8472643 | Power amplifier and method for restraining power of improved power amplifier | |||
2012 | |||||
287 | 8175304 | Compact loudspeaker system | |||
288 | 8126172 | Spatial processing stereo system | |||
2011 | |||||
289 | 8054979 | Audio system for improving a signal to noise ratio | |||
2007 | |||||
290 | 7203327 | Apparatus for and method of processing audio signal | |||
2006 | |||||
291 | 7085387 | Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources | |||
292 | 7065218 | Method of generating a left modified and a right modified audio signal for a stereo system | |||
2005 | |||||
293 | 6944474 | Sound enhancement for mobile phones and other products producing personalized audio for users | |||
294 | 6913578 | Method for customizing audio systems for hearing impaired | |||
295 | 6870935 | Volume stability control for partitioned audio system | |||
296 | 6868161 | Transmitting/receiving device and transmitting/receiving method | |||
297 | 6859538 | Plug and play compatible speakers | |||
2004 | |||||
298 | 6792122 | Acoustic device | |||
299 | 6778073 | Method and apparatus for managing audio devices | |||
300 | 6741708 | Acoustic system comprised of components connected by wireless | |||
301 | 6719581 | Plug for speaker cables, and speaker terminal and speaker terminal system provided with them | |||
302 | 6714825 | Multi-channel audio reproducing device | |||
2003 | |||||
303 | 6620094 | Method and apparatus for audio input to implantable hearing aids | |||
304 | 6608907 | Audio output apparatus having wireless speakers | |||
305 | 6590982 | Wireless stereo center speaker system | |||
306 | 6567655 | Car radio system | |||
307 | 6556683 | Remote turn-on circuit for automobile audio amplifier | |||
308 | 6522988 | Method and system for on-line hearing examination using calibrated local machine | |||
2002 | |||||
309 | 6473509 | Audio system, in particular for motor vehicles | |||
310 | 6405163 | Process for removing voice from stereo recordings | |||
2001 | |||||
311 | 6322521 | Method and system for on-line hearing examination and correction | |||
312 | 6259482 | Digital BTSC compander system | |||
2000 | |||||
313 | 6167140 | AV Amplifier | |||
314 | 6148086 | Method and apparatus for replacing a voice with an original lead singer's voice on a karaoke machine | |||
315 | 6148085 | Audio signal output apparatus for simultaneously outputting a plurality of different audio signals contained in multiplexed audio signal via loudspeaker and headphone | |||
316 | 6118876 | Surround sound speaker system for improved spatial effects | |||
317 | 6069960 | Connector device for information-handling apparatus and connector device for stereophonic audio/video apparatus | |||
318 | 6038323 | Stereophonic image enhancement system for use in automobiles | |||
319 | 6037993 | Digital BTSC compander system | |||
1999 | |||||
320 | 6009178 | Method and apparatus for crosstalk cancellation | |||
321 | 5983191 | Method and apparatus for automatically compensating tone color | |||
322 | 5970153 | Stereo spatial enhancement system | |||
323 | 5960090 | Process and device for wireless transmission | |||
324 | 5930370 | In-home theater surround sound speaker system | |||
325 | 5910996 | Dual audio program system | |||
326 | 5890125 | Method and apparatus for encoding and decoding multiple audio channels at low bit rates using adaptive selection of encoding method | |||
327 | 5883961 | Sound system | |||
1998 | |||||
328 | 5850459 | Headphone stereo control circuit | |||
329 | 5828755 | Method and device for processing signals | |||
330 | 5815579 | Portable speakers with phased arrays | |||
331 | 5784476 | Audio signal reproduction apparatus | |||
332 | 5764512 | Intelligent acoustic systems peripheral | |||
333 | 5757928 | Audio amplifier arrangement for more than two reproduction channels | |||
334 | 5754666 | Method for reproducing audio signals and an apparatus therefore | |||
335 | 5748754 | Sound system gain and equalization circuit | |||
336 | 5737427 | Surround sound processor unit | |||
337 | 5722050 | Transmitter-receiver system for use in an audio equipment | |||
338 | 5717773 | Sound system gain and equalization circuit | |||
339 | 5708719 | In-home theater surround sound speaker system | |||
1997 | |||||
340 | 5692058 | Dual audio program system | |||
341 | 5680465 | Headband audio system with acoustically transparent material | |||
342 | 5677957 | Audio circuit producing enhanced ambience | |||
343 | 5673326 | Audio bass speaker driver circuit | |||
344 | 5666433 | Microphone & loudspeaker system | |||
345 | 5666428 | Audio distribution system | |||
346 | 5666422 | Remote speaker for surround-sound applications | |||
347 | 5661811 | Rear seat audio control with multiple media | |||
348 | 5655025 | Circuit for automatically recognizing and receiving mono and stereo audio signals | |||
349 | 5642429 | Sound reproduction system having enhanced low frequency directional control characteristics | |||
350 | 5642427 | Integrated circuit for audio enhancement system | |||
351 | 5633938 | Audio track mixing processor | |||
352 | 5617478 | Sound reproduction system and a sound reproduction method | |||
353 | 5617477 | Personal wearable communication system with enhanced low frequency response | |||
1996 | |||||
354 | 5581626 | Automatically switched equalization circuit | |||
355 | 5550920 | Voice canceler with simulated stereo output | |||
356 | 5541999 | Audio apparatus having a karaoke function | |||
357 | 5537668 | Audio signal reproducing device | |||
358 | 5509080 | Bass clipping circuit | |||
359 | 5500622 | Audio signal processing circuit | |||
1995 | |||||
360 | 5469509 | Car audio system with high signal output | |||
361 | 5440644 | Audio distribution system having programmable zoning features | |||
362 | 5425106 | Integrated circuit for audio enhancement system | |||
363 | 5386473 | Passive surround sound circuit | |||
1994 | |||||
364 | 5363434 | Audio distribution system | |||
365 | 5361381 | Dynamic equalizing of powered loudspeaker systems | |||
366 | 5349639 | Automatic electronic audio signal attenuating device and method therefor | |||
367 | 5305388 | Bass compensation circuit for use in sound reproduction device | |||
1993 | |||||
368 | 5245296 | Audio amplifier circuit and method of operation | |||
369 | 5243656 | Audio circuit | |||
370 | 5237418 | Audio output circuit in electronic apparatus with composite display function | |||
371 | 5208493 | Stereo expansion selection switch | |||
1992 | |||||
372 | 5146501 | Altitude-sensitive portable stereo sound set for dancers | |||
373 | 5140637 | Device and method for removing vocal signals | |||
374 | 5131048 | Audio distribution system | |||
375 | 5117459 | Ambient imaging loudspeaker system | |||
376 | 5095382 | Wireless headphone | |||
1991 | |||||
377 | 5056148 | Output circuit of audio device | |||
1990 | |||||
378 | 4933921 | Signal reproducing apparatus | |||
1989 | |||||
379 | 4845751 | Wireless stereo headphone | |||
380 | 4829571 | Headphone | |||
381 | 4829500 | Portable wireless sound reproduction system | |||
382 | 4803728 | Stereo mixing jack | |||
1988 | |||||
383 | 4754486 | Motorcycle stereo audio system with VOX intercom | |||
1987 | |||||
384 | 4653087 | Stereo interface telephone ring detector | |||
1986 | |||||
385 | 4607381 | Signal mixing circuit | |||
1985 | |||||
386 | 4495638 | Audio-band electro-mechanical vibration converter | |||
1984 | |||||
387 | 4490683 | Electronic control switch for a power boost amplifier | |||
388 | 4433209 | Stereo/monaural selecting circuit | |||
1983 | |||||
389 | 4415768 | Tuning apparatus and method | |||
390 | 4392548 | Speaker enclosure and method of producing same | |||
1980 | |||||
391 | 4219789 | Stereo headphone adapter | |||
392 | 4181819 | Unitary panel multiple frequency range speaker system | |||
1978 | |||||
393 | 4090148 | Circuit pattern for a protection circuit of a stereo amplifier | |||
394 | 4088902 | Channel coupling | |||
395 | 4087629 | Binaural sound reproducing system with acoustic reverberation unit | |||
1976 | |||||
396 | 3944941 | Switching circuit for use with balanced transformerless amplifier | |||
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 |