GOL 9/00(2006.01) GIOL II/00(2006.01) In processing a multi-channel audio signal having
at least GIOL 2L/02(2006.01) three original channels, a first downmix channel and a second …

Audio coding processes like quantization can cause spectral components of an encoded
audio signal to be set to zero, creating spectral holes in the signal. These spectral holes can …

An audio decoder provides a combination of decoding com ponents including components
implementing base band decoding, spectral peak decoding, frequency extension decoding …

5,812,971 A 9, 1998 Herre 5,822,370 A* 10/1998 Graupe....................... 375,240 5,826,221 A
10/1998 Aoyagi 5,835,030 A 11/1998 Tsutsui et al. 5,845,243 A 12/1998 Smart et al. 5,890 …

US8179974B2 - Multi-level representation of reordered transform coefficients - Google Patents
US8179974B2 - Multi-level representation of reordered transform coefficients - Google Patents …

(52) US Cl...................................... 375/240.23: 341/67 Techniques and tools for encoding and
decoding data values that are hierarchically organized are presented. For example, an …

Spectral envelope and a noise-blending parameter derived from a measure of the Signal's
noise-like quality. The Signal SUTE 1111 is reconstructed by translating Spectral …

Entropy coding and decoding techniques are described, which may be implemented
separately or in combination. For example, a video encoder uses two-layer run level coding …

5,079,547 A 1/1992 Fuchigama et al. scale factor, which is based on current average levels
of 5,260,980 A 1 1/1993 Akagiri et al. perceptual quality, current rate control buffer fullness …

SYNTHESIS ENERG CALC, synthesizes spectral components to replace the discarded
spectral components and generates spectral components for individual channel signals from …