Title:
PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION
Document Type and Number:
Japanese Patent JP2022141919
Kind Code:
A
Abstract:
To provide a method and system for performing HFR (high frequency reconstruction/regeneration) of audio signals having large variations in energy level across the low frequency range.SOLUTION: Provided is a system configured to generate a plurality of high frequency subband signals from a plurality of low frequency subband signals, including: means for receiving the plurality of low frequency subband signals; means for receiving a set of target energies, each of the target energies covering a different target interval within a high frequency interval and being indicative of a 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 coefficients associated with the plurality of low frequency subband signals, respectively; and means for adjusting the energy of the plurality of high frequency subband signals using the set of target energies.SELECTED DRAWING: None
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Inventors:
Quorum, christopher
Application Number:
JP2022119232A
Publication Date:
September 29, 2022
Filing Date:
July 27, 2022
Export Citation:
Assignee:
Dolby International Arb
International Classes:
G10L21/0388; G10L21/038
Domestic Patent References:
| JP2010079275A | 2010-04-08 | |||
| JP2009069430A | 2009-04-02 |
Foreign References:
| WO2005040749A1 | 2005-05-06 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Osamu Miyazaki
Tadahiko Ito
Osamu Miyazaki
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