{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11996816","patent":{"patent_number":"US-11996816","title":"Non linear filter with group delay at pre-response frequency for high res radio","assignee":null,"inventors":[],"filing_date":"2020-08-28T00:00:00.000Z","publication_date":"2024-05-28T00:00:00.000Z","cpc_codes":["G11B","G11B"],"num_claims":30,"abstract":"Methods and devices are described for reducing the audible effect of pre-responses in an audio signal. The pre-responses are effectively delayed by employing a digital non-minimum-phase filter, which includes a zero lying outside the unit circle in its z-transform response. This zero is not paired with another zero at a reciprocal position inside the unit circle, as this would linearise the phase modification. The filtering can introduce a greater group delay at the pre-response frequency than at a low frequency, such as 500 Hz or even 0 Hz. The technique can be used to reduce pre-responses in an existing audio signal and also to pre-empt pre-responses that would be introduced to the audio signal by subsequent processing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Non linear filter with group delay at pre-response frequency for high res radio","description":"Methods and devices are described for reducing the audible effect of pre-responses in an audio signal. The pre-responses are effectively delayed by employing a digital non-minimum-phase filter, which ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11996816","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-11996816","citation_suggestion":"Patentable. \"Non linear filter with group delay at pre-response frequency for high res radio\" (US-11996816). https://patentable.app/patents/US-11996816","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11996816","json":"https://patentable.app/api/llm-context/US-11996816","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:14:53.703Z"}