{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9723404","patent":{"patent_number":"US-9723404","title":"Digital low pass filter","assignee":null,"inventors":[],"filing_date":"2016-08-24T00:00:00.000Z","publication_date":"2017-08-01T00:00:00.000Z","cpc_codes":["H04R","G06F","G06F"],"num_claims":18,"abstract":"A digital low pass filter for producing an output value given a target value includes a memory which stores a scaling factor, a previous output value, a previous intermediate value, and the target value; the difference between the target value and the previous output value is evaluated, and then multiplied by the scaling factor to produce an intermediate value; the previous intermediate value is multiplied by the scaling factor minus unity; the output value is evaluated by summing the previous output value, twice the intermediate value, and the previous intermediate value multiplied by the scaling factor minus unity; the output value is then stored in memory as the previous output value, and the intermediate value as the previous intermediate value, such that the filter provides a second-order response but requires fewer hardware multipliers than the direct form implementation of a second-order filter."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital low pass filter","description":"A digital low pass filter for producing an output value given a target value includes a memory which stores a scaling factor, a previous output value, a previous intermediate value, and the target val","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9723404","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-9723404","citation_suggestion":"Patentable. \"Digital low pass filter\" (US-9723404). https://patentable.app/patents/US-9723404","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9723404","json":"https://patentable.app/api/llm-context/US-9723404","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:04:00.477Z"}