PARAMETRIC MIXING OF AUDIO SIGNALS
LaoBiz.com profiles the Laos Patent “PARAMETRIC MIXING OF AUDIO SIGNALS” from open registry fields, filed by DOLBY INTERNATIONAL AB on 2015-10-28; current status: Registered. Identifiers include application No. P/509; DIP id LAP509; protection kind Patent - PCT National Phase. Key dates: publication 2023-06-30; grant 2023-06-28; expiry reference 2035-10-28. Inventor(s)/designer(s): LEHTONEN, Heidi-Maria, PURNHAGEN, Heiko, VILLEMOES, Lars. Abstract hint: )In an encoding section (100), a downmix section (110) forms first and second channels (L1, L2) of a downmix signal as linear combinations…. Status labels may change after office actions; refresh or consult primary DIP data before commercial decisions.
P/509
Mark
Key facts
- Type
- Patent
- App. no.
P/509- Status
- Registered
- Applicant
- DOLBY INTERNATIONAL AB
- Agent
- ACTIP (LAO) IP CO., LTD.
- Filing date
- 2015-10-28
- Reg. no.
P/509- Publication
- 2023-06-30
- Registration / grant
- 2023-06-28
- Expiry
- 2035-10-28
- Protection kind
- Patent - PCT National Phase
- Gazette
- 213 · 2023-06-30
- Priority
- US · 62/073,462 · 2014-10-31；US · 62/167,711 · 2015-05-28
- Applicant address
- DOLBY INTERNATIONAL AB · Mr. Treublaan 7 1097DP Amsterdam The Netherlands · NL
- Agent address
- ACTIP (LAO) IP CO., LTD. · Sisavath Village, Chanthabouly District, Vientiane, Lao PDR · LA
- Nice / IPC classes
- —
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
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Abstract
)In an encoding section (100), a downmix section (110) forms first and second channels (L1, L2) of a downmix signal as linear combinations of first and second groups (401, 402) of channels, respectively, of an M-channel audio signal; and an analysis section (120) determines upmix parameters (αLU) for parametric reconstruction of the audio signal, and mixing parameters (αLM). In a decoding section (1200), a decorrelating section (1210) outputs a decorrelated signal (D) based on the downmix signal; and a mixing section (1220) determines mixing coefficients based on the mixing parameters or the upmix parameters, and forms a K-channel output signal (L͂1,...,L͂K) as a linear combination of the downmix signal and the decorrelated signal in accordance with the mixing coefficients. The channels of the output signal approximate linear combinations of K groups (501-502, 1301-1303) of channels, respectively, of the audio signal. The K groups constitute a different partition of the audio signal than the first and second groups, and 2 ≤ K < M.
)In an encoding section (100), a downmix section (110) forms first and second channels (L1, L2) of a downmix signal as linear combinations of first and second groups (401, 402) of channels, respectively, of an M-channel audio signal; and an analysis section (120) determines upmix parameters (αLU) for parametric reconstruction of the audio signal, and mixing parameters (αLM). In a decoding section (1200), a decorrelating section (1210) outputs a decorrelated signal (D) based on the downmix signal; and a mixing section (1220) determines mixing coefficients based on the mixing parameters or the upmix parameters, and forms a K-channel output signal (L͂1,...,L͂K) as a linear combination of the downmix signal and the decorrelated signal in accordance with the mixing coefficients. The channels of the output signal approximate linear combinations of K groups (501-502, 1301-1303) of channels, respectively, of the audio signal. The K groups constitute a different partition of the audio signal than the first and second groups, and 2 ≤ K < M.
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