{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10515648","patent":{"patent_number":"US-10515648","title":"Audio/speech encoding apparatus and method, and audio/speech decoding apparatus and method","assignee":null,"inventors":[],"filing_date":"2018-12-19T00:00:00.000Z","publication_date":"2019-12-24T00:00:00.000Z","cpc_codes":["G10L","G10L","G10L","G10L"],"num_claims":5,"abstract":"An audio/speech encoding method is provided that includes transforming a time domain input signal to a frequency spectrum, and dividing the frequency spectrum to a plural of bands. The method also includes calculating a level of energies for each band, quantizing the energies for the each band, and calculating differential indices. The method additionally includes modifying a range of the differential indices for the Nth band when N is an integer of 2 or more, and replacing the differential index with the modified differential index, and not modifying a range of the differential indices for the Nth band when N is an integer of 1. The method further includes encoding the differential indices using a Huffman table selected based on a minimum value and a maximum value of the differential indices, and transmitting the encoded differential indices and a flag signal for indicating the selected Huffman table."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Audio/speech encoding apparatus and method, and audio/speech decoding apparatus and method","description":"An audio/speech encoding method is provided that includes transforming a time domain input signal to a frequency spectrum, and dividing the frequency spectrum to a plural of bands. The method also inc","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10515648","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-10515648","citation_suggestion":"Patentable. \"Audio/speech encoding apparatus and method, and audio/speech decoding apparatus and method\" (US-10515648). https://patentable.app/patents/US-10515648","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10515648","json":"https://patentable.app/api/llm-context/US-10515648","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:22:16.945Z"}