{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8515770","patent":{"patent_number":"US-8515770","title":"Method and apparatus for encoding and decoding excitation patterns from which the masking levels for an audio signal encoding and decoding are determined","assignee":null,"inventors":[],"filing_date":"2011-03-09T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["G10L","G10L","G10L","G10L"],"num_claims":17,"abstract":"A method and apparatus for approximating a true masking threshold for the quantization of spectral data in an audio transform encoder. According to the invention, for each spectrum to be quantised in the audio signal encoding, an excitation pattern is computed and coded for both long and short window/transform lengths. The excitation patterns are grouped together in a variable-size matrix. A pre-determined sorting order with a fixed number of values only is applied to the excitation pattern data matrix values, and by that re-ordering a quadratic matrix is formed to which matrix' bit planes a SPECK encoding is applied."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for encoding and decoding excitation patterns from which the masking levels for an audio signal encoding and decoding are determined","description":"A method and apparatus for approximating a true masking threshold for the quantization of spectral data in an audio transform encoder. According to the invention, for each spectrum to be quantised in ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8515770","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-8515770","citation_suggestion":"Patentable. \"Method and apparatus for encoding and decoding excitation patterns from which the masking levels for an audio signal encoding and decoding are determined\" (US-8515770). https://patentable.app/patents/US-8515770","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8515770","json":"https://patentable.app/api/llm-context/US-8515770","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T15:36:03.639Z"}