Load detection
This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving...
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Format | Patent |
Language | English |
Published |
16.07.2024
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Subjects | |
Online Access | Get full text |
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Abstract | This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance. |
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AbstractList | This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals for driving a stereo audio load (106), which may be a stereo audio load of an accessory apparatus (102) removably coupled to the audio driving circuitry in use. A load monitor (111) is provided for monitoring to monitor, from a monitoring node (112), an indication of a common mode return current passing through a common return path, together with an indication of a common mode component of the first and second audio driving signals and to determine an impedance characteristic of the stereo audio load. The load monitor (111) can provide dynamic monitoring of any significant change in load impedance. In some embodiments the load monitor (111) comprises an adaptive filter (301) which adapts a parameter of the filter which is related to the load impedance so as to determine the indication of load impedance. |
Author | Bowlerwell, John Bruce Lesso, John Paul Zhao, Xin Suryono, Yanto Prior, Morgan Timothy Mccloy-Stevens, Mark James |
Author_xml | – fullname: Prior, Morgan Timothy – fullname: Bowlerwell, John Bruce – fullname: Lesso, John Paul – fullname: Zhao, Xin – fullname: Suryono, Yanto – fullname: Mccloy-Stevens, Mark James |
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Notes | Application Number: US202318296266 |
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Snippet | This application relates to audio driving circuitry (100), and in particular to audio driving circuitry for outputting first and second audio driving signals... |
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SubjectTerms | AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS STEREOPHONIC SYSTEMS |
Title | Load detection |
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