ການປະສົມປະສານແບບຍ້ອນກັບທີ່ເຂົ້າກັນໄດ້ຂອງເທັກນິກໃນການສ້າງຄື້ນຄວາມຖີ່ສູງສໍາລັບສັນຍານສຽງ
The following summary describes a Laos Patent titled “BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS”, filed by Dolby International AB on 2022-11-24; current status: Registered. Identifiers include application No. P/866; DIP id LAP866; protection kind Patent - Foreign. Key dates: publication 2025-12-19; grant 2025-04-22; expiry reference 2042-11-24. Classification: G10L 19/00、G10L 19/02、G10L 19/16、H04N 19/00. Inventor(s)/designer(s): EKSTRAND, Per - Swedish, KJOERLING, Kristofer - Swedish, VILLEMOES, Lars - Swedish, PURNHAGEN, Heiko - German. Abstract hint: A method for decoding an encoded audio bitstream is disclosed. The method includes receiving the encoded audio bitstream and decoding the a…. Use LaoBiz.com to hop between this IP record, related filings by the same applicant, and the matched company profile when present.
P/866
Mark
Key facts
- Type
- Patent
- App. no.
P/866- Status
- Registered
- Applicant
- Dolby International AB
- Agent
- ACTIP (LAO) IP CO., LTD.
- Filing date
- 2022-11-24
- Reg. no.
P/866- Publication
- 2025-12-19
- Registration / grant
- 2025-04-22
- Expiry
- 2042-11-24
- Protection kind
- Patent - Foreign
- Gazette
- 301 · 2025-04-25
- Priority
- SG · 11202006703X · 2019-01-28
- Applicant address
- Dolby International AB · Mr. Treublaan 7 1097DP Amsterdam The Netherlands · SE
- Agent address
- ACTIP (LAO) IP CO., LTD. · Sisavath Village, Chanthabouly District, Vientiane, Lao PDR · LA
- Nice / IPC classes
- G10L 19/00 · G10L 19/02 · G10L 19/16 · H04N 19/00
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
Related records
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Abstract
ວິທີການສໍາລັບການຖອດລະຫັດບິດສະຕຣິມສຽງທີ່ເຂົ້າລະຫັດໄດ້ເປີດເຜີຍ. ວິທີການປະກອບມີິການຮັບບິດສະຕຣີມສຽງທີ່ເຂົ້າລະຫັດ ແລະ ການຖອດລະຫັດຂໍ້ມູນສຽງ ເພື່ອສ້າງສຽງສັນຍານສຽງຄວາມຖີ່ຕໍ່າທີ່ຖອດລະຫັດແລ້ວ. ວິທີການເພີ່ມເຕີມປະກອບມີການແຍກຂໍ້ມູນເມຕ້າ ຂອງການສ້າງຄວາມຖີ່ສູງ ແລະ ການກອງສັນຍານສຽງຄວາມຖີ່ຕໍ່າທີ່ຖອດລະຫັດດ້ວຍຕົວກັ່ນຕອງການວິເຄາະ ເພື່ອສ້າງສັນຍານສຽງຄວາມຖີ່ຕໍ່າການກັ່ນຕອງແລ້ວ. ວີທີການດັ່ງກ່າວຍັງປະກອບມີການແຍກແຟລັກທີ່ຊີ້ບອກວ່າຈະຕ້ອງດໍາເນີນການແປສະເປັກທຣັມ ຫຼື ການຍ້າຍສຽງປະສານກັບຂໍ້ມູນສຽງ ແລະ ສ້າງສ່ວນຄວາມຖີ່ສູງຂອງສັນຍານສຽງຄືນໃໝ່ ໂດຍໃຊ້ສັນຍານສຽງຄວາມຖີ່ກັ່ນຕອງແລ້ວ ແລະ ຂໍ້ມູນເມຕ້າຂອງການສ້າງຄວາມຖີ່ສູງໃໝ່ຕາມແຟລັກ.
A method for decoding an encoded audio bitstream is disclosed. The method includes receiving the encoded audio bitstream and decoding the audio data to generate a decoded lowband audio signal. The method further includes extracting high frequency reconstruction metadata and filtering the decoded lowband audio signal with an analysis filterbank to generate a filtered lowband audio signal. The method also includes extracting afTag indicating whether either spectral translation or harmonic transposition is to be performed on the audio data and regenerating a highband portion of the audio signal using the filtered lowband audio signal and the high frequency reconstruction metadata in accordance with the flag.
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