PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION
This Laos Patent “PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION” is a public DIP intellectual-property record, filed by Dolby International AB on 2022-12-07; current status: Registered. Identifiers include application No. P/874; DIP id LAP874; protection kind Patent - Foreign. Key dates: publication 2024-10-24; grant 2024-09-20; expiry reference 2042-12-07. Classification: G10L 19/00、G10L 19/02、G10L 21/038. Inventor(s)/designer(s): KJöRLING, Kristofer - Swedish. Abstract hint: The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a m…. Status labels may change after office actions; refresh or consult primary DIP data before commercial decisions.
P/874
Mark
Key facts
- Type
- Patent
- App. no.
P/874- Status
- Registered
- Applicant
- Dolby International AB
- Agent
- ACTIP (LAO) IP CO., LTD
- Filing date
- 2022-12-07
- Reg. no.
P/874- Publication
- 2024-10-24
- Registration / grant
- 2024-09-20
- Expiry
- 2042-12-07
- Protection kind
- Patent - Foreign
- Gazette
- 274 · 2024-10-24
- Applicant address
- Dolby International AB · Mr. Treublaan 7 1097DP Amsterdam The Netherlands · NL
- Agent address
- ACTIP (LAO) IP CO., LTD · Sisavath Village, Chanthabouly District, Vientaine, Lao PDR · LA
- Nice / IPC classes
- G10L 19/00 · G10L 19/02 · G10L 21/038
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
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Abstract
The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a method and system for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. A system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described. The system comprises means for receiving the plurality of low frequency subband signals; means for receiving a set of target energies, each target energy covering a different target interval within the high frequency interval and being indicative of the desired energy of one or more high frequency subband signals lying within the target interval; means for generating the plurality of high frequency subband signals from the plurality of low frequency subband signals and from a plurality of spectral gain coeffrcients associated with the plurality of low frequency subband signals, respectivelyl and means for adjusting the energy of the plurality of high frequency subband signals using the set of target energies
The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a method and system for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. A system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described. The system comprises means for receiving the plurality of low frequency subband signals; means for receiving a set of target energies, each target energy covering a different target interval within the high frequency interval and being indicative of the desired energy of one or more high frequency subband signals lying within the target interval; means for generating the plurality of high frequency subband signals from the plurality of low frequency subband signals and from a plurality of spectral gain coeffrcients associated with the plurality of low frequency subband signals, respectivelyl and means for adjusting the energy of the plurality of high frequency subband signals using the set of target energies
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