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11. 发明授权

US11329622B2 Automatic calibration of an ambient noise compensation system 有权
公开(公告)号：US11329622B2
公开(公告)日：2022-05-10
申请号：US16854541
申请日：2020-04-21
申请人： MITEK CORP., INC.
发明人： Brandon Graham , Johnathan Ivey
IPC分类号： H03G3/20 , H03G3/00 , H03G3/32 , H03G3/04
摘要： An element of an automatic gain control system that automatically calibrates a Composite Gain vs Ambient Noise look-up table responsive to user zone gain inputs at various ambient noise levels. The table is a graph of adjacent (horizontally or diagonally) data points (nodes) mapping ambient noise to composite gain. Three algorithmic rules determine position changes of the nodes responsive to zone gain inputs. A curve may be fit to an arrangement of adjacent nodes. The curve, or the interpolated table value, is used with an ambient noise input to determine the current composite gain. The element may be used with many traditional ANC systems. Once calibrated over the full range of ambient noises in the user's space, the ANC system may never need further user zone gain inputs.

12. 发明授权

US11296668B2 Methods and apparatus for adjusting a level of an audio signal 有权
公开(公告)号：US11296668B2
公开(公告)日：2022-04-05
申请号：US16933606
申请日：2020-07-20
申请人： Dolby Laboratories Licensing Corporation
发明人： Alan Jeffrey Seefeldt
IPC分类号： H03G3/00 , H03G3/30 , G10L19/008 , H04S3/02 , H03G3/32 , H03G9/00 , H03G9/14 , H03G9/02 , H03G3/20 , G10L21/038 , G10L25/21 , G10L21/0232 , H03G9/24
摘要： The invention relates to methods and apparatus for adjusting a level of an audio signal. An audio signal is divided into a plurality of frequency bands. Modification parameters are obtained for at least one of the plurality of frequency band. Gain factors are derived for at least one of the plurality of frequency bands, the gain factors determined based on the amplitude scale factors. The gain factors are smoothed. A level of noise from noise compensation factors is determined. The gain factors are applied to at least one of the frequency bands to generate gain adjusted frequency bands. The level of noise is adjusted based on the gain adjusted frequency bands. At least one of the frequency bands is filtered with a filter generated with the filter coefficients. The plurality of frequency bands is synthesized to generate an output audio signal.

13. 发明申请

US20220103943A1 Playback Device Pairing 有权
公开(公告)号：US20220103943A1
公开(公告)日：2022-03-31
申请号：US17547461
申请日：2021-12-10
申请人： Sonos, Inc.
发明人： Christopher Kallai , Michael Darrell Andrew Ericson , Robert A. Lambourne , Robert Reimann , Mark Triplett
IPC分类号： H04R3/12 , G06F3/16 , H03G3/20 , H03G3/30 , H03G5/16 , H04R5/04 , H04S7/00 , H04R27/00
摘要： The present application discloses playback devices and networks, software for operating playback devices and playback device networks, and methods of operating playback devices and networks, where an individual network device is configured to switch between operating various operating modes comprising a non-paired mode and a paired mode, where the playback device is configured to output various channels of audio content within various audio frequency ranges while operating in the various operating modes.

14. 发明授权

US11288036B2 Adaptive modulation of audio content based on background noise 有权
公开(公告)号：US11288036B2
公开(公告)日：2022-03-29
申请号：US16892250
申请日：2020-06-03
申请人： Microsoft Technology Licensing, LLC
发明人： Jani Samuli Kuivalainen , Eric Lee Middleton
IPC分类号： H03G3/20 , G06F3/16 , H03G3/30 , G10L19/02 , G10L25/51
摘要： Techniques are described herein that are capable of adaptively modulating audio content based on background noise. For instance, a loudness difference between a loudness of the audio content and a loudness of the background noise is determined. The loudness of the audio content is compared to an upper loudness threshold. A modulation is selected from multiple modulations based on the loudness difference and/or the comparison. Subsequent outputted audio content is modulated using the selected modulation.

15. 发明授权

US11233481B2 Modulated power apparatus 有权
公开(公告)号：US11233481B2
公开(公告)日：2022-01-25
申请号：US16775554
申请日：2020-01-29
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Michael R. Kay
IPC分类号： H03G3/20 , H03F1/02 , H03F3/20 , H04W52/02
摘要： An apparatus that includes a tracking amplifier having an amplifier output terminal coupled to an output voltage node and an envelope input terminal configured to receive an envelope signal of a radio frequency signal is disclosed. A multi-level voltage converter has a switched voltage terminal coupled to the output voltage node and a converter control input terminal configured to receive a converter control signal. A control signal multiplexer has a converter control output terminal coupled to the converter control input terminal, a first converter signal input terminal configured to receive a first converter control signal corresponding to a lower envelope modulation bandwidth, a second converter signal input terminal configured to receive a second converter control signal corresponding to a higher envelope modulation bandwidth, and a converter control signal selector terminal configured to receive a control selector signal for selecting between the first and second converter control signals.

16. 发明申请

US20220022150A1 Carrier Aggregation and High Order Modulation in Vehicle-to-Vehicle (V2V) Sidelink Communication 有权
公开(公告)号：US20220022150A1
公开(公告)日：2022-01-20
申请号：US17461687
申请日：2021-08-30
申请人： Apple Inc.
发明人： Alexey Khoryaev , Mikhail Shilov , Andrey Chervyakov , Sergey Panteleev , Dmitry Belov , Pavel Dyakov , Kyeongin Jeong
IPC分类号： H04W56/00 , H04B17/318 , H04B17/382 , H04W4/46 , H03G3/20 , H04L1/00 , H04L5/00 , H04L27/36 , H04W72/12 , H04W88/04
摘要： Embodiments of a User Equipment (UE) and methods for communication are generally described herein. The UE may be configured for carrier aggregation using a primary component carrier (CC) and a secondary CC. The UE may attempt to detect a sidelink synchronization signal (SLSS) from another UE on the primary CC. The UE may, if the SLSS from the other UE is detected: determine, based on the detected SLSS, a common time synchronization for the primary CC and the secondary CC for vehicle-to-vehicle (V2V) sidelink transmissions in accordance with the carrier aggregation. The UE may, if the SLSS from the other UE is not detected: transmit an SLSS to enable determination of the common time synchronization for the primary CC and the secondary CC by the other UE. The SLSS may be transmitted on the primary CC.

17. 发明申请

US20210407478A1 Adaptive Music Playback System 有权
公开(公告)号：US20210407478A1
公开(公告)日：2021-12-30
申请号：US17469584
申请日：2021-09-08
申请人： NIKE, Inc.
发明人： Justin Fraga , Levi J. Patton
IPC分类号： G10H1/00 , H03G3/20 , G06F16/683 , G10H1/46
摘要： An adaptive music playback system is disclosed. The system includes a composition system that receives information corresponding to user activity levels. The composition system determines target musical criteria corresponding to the user activity levels and modifies the composition of a song in response to changes in user activity.

18. 发明授权

US11201682B2 Devices, systems and processes for detecting and remediating interfence signals and identifying signal interference sources 有权
公开(公告)号：US11201682B2
公开(公告)日：2021-12-14
申请号：US16718324
申请日：2019-12-18
申请人： DISH Wireless L.L.C.
发明人： Kevin Yao , Bill Versteeg
IPC分类号： H04B17/345 , H03G3/20 , H04B17/318 , H04B1/10 , H04L29/08 , H04B17/21
摘要： Devices, systems and processes for identifying and detecting an interfering signal are described. A process may include conducting a scan of one or more frequency bands to obtain at least one scan result and determining therefrom if a response condition has been detected. If so detected, a first frequency band corresponding to the detected response condition may be identified and a response condition action to be performed determined. If no response condition action is to be performed, scanning continues. If a response condition is to be performed two or more available sensors are identified and a first sensor is selected. A scan plan is developed and then initiated by the first sensor. Data from the first sensor is received and analyzed to identify a second frequency band indicative of an interfering signal. Based on at least the scan data, a location for a signal interference source (SIS) may be estimated.

19. 发明授权

US11170794B2 Apparatus and method for determining a predetermined characteristic related to a spectral enhancement processing of an audio signal 有权
公开(公告)号：US11170794B2
公开(公告)日：2021-11-09
申请号：US16586424
申请日：2019-09-27
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： Patrick Gampp , Christian Uhle , Sascha Disch , Antonios Karampourniotis , Julia Havenstein , Oliver Hellmuth , Juergen Herre , Peter Prokein
IPC分类号： G10L19/02 , G10L19/022 , G10L19/26 , G10L21/0216 , G10L21/0232 , G10L21/038 , G10L25/69 , H03G3/20
摘要： An apparatus for determining a predetermined characteristic related to a spectral enhancement processing of an audio signal includes a deriver configured for obtaining a spectrum of the audio signal and for deriving a local maximum signal from the spectrum. The apparatus includes a determiner configured for determining a similarity between segments of the local maximum signal and includes a processor for providing an information indicating that the audio signal includes the predetermined characteristic dependent on an evaluation of the similarity.

20. 发明申请

US20210281231A1 METHODS, SYSTEMS, AND MEDIA FOR CONTROLLING AUDIO OF AN HDMI AUDIO SYSTEM 有权
公开(公告)号：US20210281231A1
公开(公告)日：2021-09-09
申请号：US17328093
申请日：2021-05-24
申请人： Google LLC
发明人： Eric Jason Roberts
IPC分类号： H03G3/20 , H04N21/422 , H04N21/4363 , H04N21/485
摘要： Mechanisms for controlling an audio level of an HDMI audio system are provided, the mechanisms comprising: causing audio data to be presented by an HDMI audio system at a current system volume level; receiving a requested volume level from a second screen device; and controlling a system volume level by: (a) determining the current system volume level; (b) determining a change in volume based on a difference between the requested volume level and the current system volume level; (c) determining a direction in which to cause the system volume level to change; (d) sending a volume control message to the system using a consumer electronic control bus connected to the system indicating whether to increase or decrease the system volume level based on the determined direction of system volume change; and (e) repeating (a)-(d) until the current system volume level reaches a predetermined value.

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