IMPROVED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION
LaoBiz.com profiles the Laos Patent “IMPROVED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION” from open registry fields, filed by Dolby International AB on 2022-12-09; current status: Registered. Identifiers include application No. P/877; DIP id LAP877; protection kind Patent - Foreign. Key dates: publication 2024-10-24; grant 2024-09-20; expiry reference 2042-12-09. Classification: G10L 19/02、G10L 21/04、G10L 25/18、G10L 19/022、G10L 19/032. Inventor(s)/designer(s): VILLEMOES, Lars - Danish. Abstract hint: The present document relates to audio source coding systems which make use of a. Unique application identifiers, holders and classification text are surfaced here to reduce near-duplicate IP landing pages; always verify against the competent office.
P/877
Mark
Key facts
- Type
- Patent
- App. no.
P/877- Status
- Registered
- Applicant
- Dolby International AB
- Agent
- ACTIP (LAO) IP CO, LTD.
- Filing date
- 2022-12-09
- Reg. no.
P/877- Publication
- 2024-10-24
- Registration / grant
- 2024-09-20
- Expiry
- 2042-12-09
- Protection kind
- Patent - Foreign
- Gazette
- 274 · 2024-10-24
- Priority
- SG · SG10201408425Q
- Applicant address
- Dolby International AB · Mr. Treublaan 7 1097DP Amsterdam The Netherlands · NL
- Agent address
- ACTIP (LAO) IP CO, LTD. · Sisavath Viltage, Chanthabouly District, Vientiane, Lao PDR · LA
- Nice / IPC classes
- G10L 19/02 · G10L 21/04 · G10L 25/18 · G10L 19/022 · G10L 19/032
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
Related records
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Abstract
The present document relates to audio source coding systems which make use of a
harmonic transposition method for high frequency reconstruction (HFR), as well as to digital
effectprocessors,e.g.exciters,wheregenerationofharmonicdistortionaddbrightnesstothe processedsignal,andtotimestretcherswhereasignaldurationisprolongedwithmaintained spectral content. A system and method configured to genemte a time stretched and'/or frequency transposed signal from an input signal is described' The system comprises an analysis filterbank (101) confrgured to provide an analysis subband signal from the input signal; wherein the analysis subband signal comprises a plurality of complex valued analysis samples, each having a phase and a magnitude' Furthermore' the system comprises a subband processing unit (102) configured to determine a synthesis subband signal from the analysis subband signal using a subband transposition factor Q and a subband stretch factor S ' The subbandprocessingunit(102)performsablockbasednonlinearprocessingwhereinthe magnitudeofsamplesofthesynthesissubbandsigralaredeterminedfromthemagnitudeof corresponding samples of the analysis subband sigral and a predetermined sample of the analysis subband signal' In addition' the system comprises a synthesis filte$ank (103) configured to generate the time stretched and/or frequency transposed signal from the synthesis subband signal'
The present document relates to audio source coding systems which make use of a
harmonic transposition method for high frequency reconstruction (HFR), as well as to digital
effectprocessors,e.g.exciters,wheregenerationofharmonicdistortionaddbrightnesstothe processedsignal,andtotimestretcherswhereasignaldurationisprolongedwithmaintained spectral content. A system and method configured to genemte a time stretched and'/or frequency transposed signal from an input signal is described' The system comprises an analysis filterbank (101) confrgured to provide an analysis subband signal from the input signal; wherein the analysis subband signal comprises a plurality of complex valued analysis samples, each having a phase and a magnitude' Furthermore' the system comprises a subband processing unit (102) configured to determine a synthesis subband signal from the analysis subband signal using a subband transposition factor Q and a subband stretch factor S ' The subbandprocessingunit(102)performsablockbasednonlinearprocessingwhereinthe magnitudeofsamplesofthesynthesissubbandsigralaredeterminedfromthemagnitudeof corresponding samples of the analysis subband sigral and a predetermined sample of the analysis subband signal' In addition' the system comprises a synthesis filte$ank (103) configured to generate the time stretched and/or frequency transposed signal from the synthesis subband signal'
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