Decoding method, decoder, medium and encoding method for interleaved waveform coding

The encoder and decoder system uses waveform encoding and interleaving to enhance the reconstruction of tonal and transient components in high-frequency audio signals, addressing the limitations of SBR algorithms and improving signal fidelity.

JP7885295B2Active Publication Date: 2026-07-06DOLBY INTERNATIONAL AB
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
DOLBY INTERNATIONAL AB
Filing Date
2024-09-04
Publication Date
2026-07-06

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Abstract

To provide methods and apparatuses for decoding and encoding of audio signals.SOLUTION: In particular, a method for decoding includes receiving a waveform-coded signal having a spectral content corresponding to a certain subset of a frequency range above a cross-over frequency. The waveform-coded signal is interleaved with a parametric high frequency reconstruction of the audio signal above the cross-over frequency. In this way, an improved reconstruction of the high frequency bands of the audio signal is achieved.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Encoding device, decoding device, and method thereof

    WO2008084688A1