{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8467893","patent":{"patent_number":"US-8467893","title":"Objective measurement of audio quality","assignee":null,"inventors":[],"filing_date":"2008-04-09T00:00:00.000Z","publication_date":"2013-06-18T00:00:00.000Z","cpc_codes":["G10L"],"num_claims":18,"abstract":"In an apparatus for objective perceptual evaluation of speech quality, parameters BandwidthRef and BandwidthTest representing the bandwidth are forwarded to a calculator 30 for calculating the relative bandwidth difference ΔBW between a reference signal and a test signal. ΔBW is forwarded to a calculator 32, which determines the value of a weighting parameter α. Preferably a sealing unit 33 scales or normalizes the disturbance density D and the asymmetric disturbance density DA, for example to the range [0,1]. The values of ΔBW and α are forwarded to a bandwidth compensator 34, which also receives the preferably scaled disturbance density D and asymmetric disturbance density DA. The bandwidth compensated disturbance densities D*, DA* are forwarded to a linear combiner 42, which forms a score representing predicted quality of the test signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Objective measurement of audio quality","description":"In an apparatus for objective perceptual evaluation of speech quality, parameters BandwidthRef and BandwidthTest representing the bandwidth are forwarded to a calculator 30 for calculating the relativ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8467893","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-8467893","citation_suggestion":"Patentable. \"Objective measurement of audio quality\" (US-8467893). https://patentable.app/patents/US-8467893","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8467893","json":"https://patentable.app/api/llm-context/US-8467893","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:27:25.980Z"}