18489875. METHOD AND DEVICE FOR DECODING SIGNALS simplified abstract (Huawei Technologies Co., Ltd.)
Contents
METHOD AND DEVICE FOR DECODING SIGNALS
Organization Name
Inventor(s)
METHOD AND DEVICE FOR DECODING SIGNALS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18489875 titled 'METHOD AND DEVICE FOR DECODING SIGNALS
Simplified Explanation
The abstract describes a method for decoding signals using spectral coefficients. The computing device groups the coefficients into sub-bands and classifies them as bit allocation unsaturated based on the average number of allocated bits per coefficient and a threshold. It then obtains a noise filling gain based on the sub-band's envelope and performs noise filling to obtain a reconstructed spectral coefficient. Finally, it obtains a frequency domain audio signal based on the decoded coefficients and the reconstructed coefficient.
- The method decodes spectral coefficients by grouping them into sub-bands.
- It classifies sub-bands as bit allocation unsaturated based on average allocated bits and a threshold.
- A noise filling gain is obtained based on the sub-band's envelope.
- Reconstructed spectral coefficients are obtained by performing noise filling.
- A frequency domain audio signal is obtained using the decoded and reconstructed coefficients.
Potential Applications:
- Audio and video signal decoding
- Speech recognition and synthesis
- Music production and editing
Problems Solved:
- Efficient decoding of signals with reduced bit allocation
- Improved noise reduction and reconstruction of spectral coefficients
Benefits:
- Enhanced audio and video quality
- Reduced bandwidth and storage requirements
- Improved speech and music processing capabilities
Original Abstract Submitted
In a method to decode signals, a computing device decodes spectral coefficients of a current frame are grouped into a plurality of sub-bands. The computing device classifies a sub-band as a bit allocation unsaturated sub-band based on an average quantity of allocated bits per spectral coefficient of a sub-band of the plurality of sub-bands and a threshold. The computing device obtains a noise filling gain based on an envelope of the sub-band, and obtains a reconstructed spectral coefficient of the sub-band by performing noise filling based on the noise filling gain. The computing device then obtains a frequency domain audio signal based on spectral coefficients in the sub-band obtained by decoding and the reconstructed spectral coefficient.
