{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9620101","patent":{"patent_number":"US-9620101","title":"Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation","assignee":null,"inventors":[],"filing_date":"2013-10-08T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":22,"abstract":"An audio amplifier circuit may include a power amplifier, a charge pump power supply, and a control circuit. The power amplifier may have an audio input for receiving an audio input signal, an audio output for providing the output signal, and a power supply input. The charge pump power supply may provide a power supply voltage to the power supply input. The charge pump power supply may have a select input for selecting an operating mode of the power supply. In a first operating mode, the power supply voltage may equal to a first voltage, and in a second operating mode, the power supply voltage may be substantially equal to a second voltage which is a rational fraction of the first voltage. The control circuit may generate the select input based on a magnitude of anti-noise generated by an adaptive noise cancellation system associated with the audio transducer."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation","description":"An audio amplifier circuit may include a power amplifier, a charge pump power supply, and a control circuit. The power amplifier may have an audio input for receiving an audio input signal, an audio o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9620101","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9620101","citation_suggestion":"Patentable. \"Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation\" (US-9620101). https://patentable.app/patents/US-9620101","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9620101","json":"https://patentable.app/api/llm-context/US-9620101","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:55:24.201Z"}