LA P/874 20241024 20060101
G
10 L 19 00 A 20060101
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10 L 19 02 A 20060101
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10 L 21 038 A LA P/874 20221207 Dolby International AB
Mr. Treublaan 7 1097DP Amsterdam The Netherlands NL
NL KJöRLING, Kristofer - Swedish
SE
ACTIP (LAO) IP CO., LTD
Sisavath Village, Chanthabouly District, Vientaine, Lao PDR LA
PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION PROCESSING OF AUDIO SIGNALS DURING HIGH FREQUENCY RECONSTRUCTION 274 20241024 20240920 20421207 20221207 20240920 20241024 Patent - Foreign

<p>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</p>

<p>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</p>