<?xml version="1.0" encoding="UTF-8"?>

<wo-patent-document lang="la" status="Registered" country="LA">
  <wo-bibliographic-data status="Granted">
    <publication-reference>
      <document-id>
        <country>LA</country>
        <doc-number>P/866</doc-number>
        <date>20250425</date>
      </document-id>
    </publication-reference>
    <classifications-ipcr>
      <classification-ipcr sequence="0001">
        <ipc-version-indicator>
          <date>20060101</date>
        </ipc-version-indicator>
        <section>G</section>
        <class>10</class>
        <subclass>L</subclass>
        <main-group>19</main-group>
        <subgroup>00</subgroup>
        <classification-value>A</classification-value>
      </classification-ipcr>
      <classification-ipcr sequence="0002">
        <ipc-version-indicator>
          <date>20060101</date>
        </ipc-version-indicator>
        <section>G</section>
        <class>10</class>
        <subclass>L</subclass>
        <main-group>19</main-group>
        <subgroup>02</subgroup>
        <classification-value>A</classification-value>
      </classification-ipcr>
      <classification-ipcr sequence="0003">
        <ipc-version-indicator>
          <date>20060101</date>
        </ipc-version-indicator>
        <section>G</section>
        <class>10</class>
        <subclass>L</subclass>
        <main-group>19</main-group>
        <subgroup>16</subgroup>
        <classification-value>A</classification-value>
      </classification-ipcr>
      <classification-ipcr sequence="0004">
        <ipc-version-indicator>
          <date>20060101</date>
        </ipc-version-indicator>
        <section>H</section>
        <class>04</class>
        <subclass>N</subclass>
        <main-group>19</main-group>
        <subgroup>00</subgroup>
        <classification-value>A</classification-value>
      </classification-ipcr>
    </classifications-ipcr>
    <application-reference>
      <document-id>
        <country>LA</country>
        <doc-number>P/866</doc-number>
        <date>20221124</date>
      </document-id>
    </application-reference>
    <priority-claims>
      <priority-claim sequence="0001" kind="national">
        <country>SG</country>
        <doc-number>11202006703X</doc-number>
        <date>20190128</date>
      </priority-claim>
    </priority-claims>
    <parties>
      <applicants>
        <applicant sequence="0001" app-type="applicant" designation="all">
          <addressbook lang="la">
            <name>Dolby International AB</name>
            <address>
              <address-1>Mr. Treublaan 7 1097DP Amsterdam The Netherlands</address-1>
              <country>SE</country>
            </address>
          </addressbook>
          <nationality>
            <country/>
          </nationality>
          <residence>
            <country>SE</country>
          </residence>
        </applicant>
      </applicants>
      <inventors>
        <inventor sequence="0001">
          <addressbook lang="la">
            <name>EKSTRAND, Per - Swedish</name>
            <address>
              <address-1>c/o Dolby Sweden AB, Gavlegatan 12A, 113 30 Stockholm, Sweden</address-1>
              <country>SE</country>
            </address>
          </addressbook>
        </inventor>
        <inventor sequence="0002">
          <addressbook lang="la">
            <name>KJOERLING, Kristofer - Swedish</name>
            <address>
              <address-1>c/o Dolby Sweden AB, Gavlegatan 12A, 113 30 Stockholm, Sweden</address-1>
              <country>SE</country>
            </address>
          </addressbook>
        </inventor>
        <inventor sequence="0003">
          <addressbook lang="la">
            <name>VILLEMOES, Lars - Swedish</name>
            <address>
              <address-1>c/o Dolby Sweden AB, GAvlegatan 12A, 113 30 Stockholm, Sweden</address-1>
              <country>SE</country>
            </address>
          </addressbook>
        </inventor>
        <inventor sequence="0004">
          <addressbook lang="la">
            <name>PURNHAGEN, Heiko - German</name>
            <address>
              <address-1>c/o Dolby Sweden AB, Gavlegatan 12A, 113 30 Stockholm, Sweden</address-1>
              <country>SE</country>
            </address>
          </addressbook>
        </inventor>
      </inventors>
      <agents>
        <agent sequence="0001" rep-type="agent">
          <addressbook lang="la">
            <name>ACTIP (LAO) IP CO., LTD.</name>
            <address>
              <address-1>Sisavath Village, Chanthabouly District, Vientiane, Lao PDR</address-1>
              <country>LA</country>
            </address>
          </addressbook>
        </agent>
      </agents>
    </parties>
    <invention-title lang="la">ການປະສົມປະສານແບບຍ້ອນກັບທີ່ເຂົ້າກັນໄດ້ຂອງເທັກນິກໃນການສ້າງຄື້ນຄວາມຖີ່ສູງສໍາລັບສັນຍານສຽງ</invention-title>
    <invention-title lang="en">BACKWARD-COMPATIBLE INTEGRATION OF HIGH FREQUENCY RECONSTRUCTION TECHNIQUES FOR AUDIO SIGNALS</invention-title>
    <wo-dates-of-public-availability>
      <gazette-reference>
        <gazette-num>301</gazette-num>
        <date>20250425</date>
      </gazette-reference>
    </wo-dates-of-public-availability>
    <wo-term-of-grant>
      <date>20250422</date>
    </wo-term-of-grant>
    <wo-date-of-expiry>20421124</wo-date-of-expiry>
    <wo-national-office-event national-office-event-type="Filed" doc-number="P/866" event-name="Filing">
      <wo-national-office-event-date>
        <date>20221124</date>
      </wo-national-office-event-date>
    </wo-national-office-event>
    <wo-national-office-event national-office-event-type="Registered" event-name="Registration">
      <wo-national-office-event-date>
        <date>20250422</date>
      </wo-national-office-event-date>
    </wo-national-office-event>
    <wo-national-office-event national-office-event-type="Published" doc-number="P/866" event-name="Publication">
      <wo-national-office-event-date>
        <date>20250425</date>
      </wo-national-office-event-date>
    </wo-national-office-event>
    <wo-national-office-filing-data appl-type="Patent - Foreign" file-type="">
      <kind-of-protection>Patent - Foreign</kind-of-protection>
    </wo-national-office-filing-data>
  </wo-bibliographic-data>
  <abstract lang="la">
    <p num="0001">&lt;p&gt;ວິທີການສໍາລັບການຖອດລະຫັດບິດສະຕຣິມສຽງທີ່ເຂົ້າລະຫັດໄດ້ເປີດເຜີຍ. ວິທີການປະກອບມີິການຮັບບິດສະຕຣີມສຽງທີ່ເຂົ້າລະຫັດ ແລະ ການຖອດລະຫັດຂໍ້ມູນສຽງ ເພື່ອສ້າງສຽງສັນຍານສຽງຄວາມຖີ່ຕໍ່າທີ່ຖອດລະຫັດແລ້ວ. ວິທີການເພີ່ມເຕີມປະກອບມີການແຍກຂໍ້ມູນເມຕ້າ ຂອງການສ້າງຄວາມຖີ່ສູງ ແລະ ການກອງສັນຍານສຽງຄວາມຖີ່ຕໍ່າທີ່ຖອດລະຫັດດ້ວຍຕົວກັ່ນຕອງການວິເຄາະ ເພື່ອສ້າງສັນຍານສຽງຄວາມຖີ່ຕໍ່າການກັ່ນຕອງແລ້ວ. ວີທີການດັ່ງກ່າວຍັງປະກອບມີການແຍກແຟລັກທີ່ຊີ້ບອກວ່າຈະຕ້ອງດໍາເນີນການແປສະເປັກທຣັມ ຫຼື ການຍ້າຍສຽງປະສານກັບຂໍ້ມູນສຽງ ແລະ ສ້າງສ່ວນຄວາມຖີ່ສູງຂອງສັນຍານສຽງຄືນໃໝ່ ໂດຍໃຊ້ສັນຍານສຽງຄວາມຖີ່ກັ່ນຕອງແລ້ວ ແລະ ຂໍ້ມູນເມຕ້າຂອງການສ້າງຄວາມຖີ່ສູງໃໝ່ຕາມແຟລັກ.&lt;/p&gt;</p>
  </abstract>
  <abstract lang="en">
    <p num="0002">&lt;p&gt;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.&amp;nbsp;&lt;/p&gt;</p>
  </abstract>
</wo-patent-document>
