Spatial Audio Object Coding With Two-Step Coding Structure for Interactive Audio Service

Kim, Kwangki; Seo, Jeongil; Beack, Seungkwon; Kang, Kyeongok; Hahn, Minsoo

doi:10.1109/tmm.2011.2168197

Cited by 21 publications

(27 citation statements)

References 11 publications

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“…2.2 SAOC Two-Step Coding [2] The first step of the SAOC-TSC encoder is same to the SAOC encoder as shown in Fig. 2 and it generates commonobject down-mix signals and OLD spatial parameters.…”

Section: Spatial Audio Object Codingmentioning

confidence: 99%

“…Note that residual signal encoding is additionally conducted with bitrate increase to minimize the difference and it usually improves audio quality [2]. For more efficient encoding, careful effective bandwidth set-up is required because a rather high bitrate is needed to encode the whole bandwidth of the residual signal.…”

Section: Spatial Audio Object Codingmentioning

confidence: 99%

“…We excluded higher frequency bands from the effective bandwidths considering poor human auditory sensitivity for those frequency ranges. Considering both the audio quality and the bitrate for residual coding, the effective bandwidth was decided on 0-5.5 kHz [2].…”

Section: Spatial Audio Object Codingmentioning

confidence: 99%

“…Line spectral frequency quantization and transform coded excitation coding are used for the residual coding after linear predictive analysis [2]. The SAOC-TSC adopts a fixed bitrate in residual coding.…”

Section: Spatial Audio Object Codingmentioning

confidence: 99%

“…To cope with this, the SAOC Two-Step Coding (SAOC-TSC) utilizing the residual signal of the target object was proposed [2]. Its audio quality is becomes better but with increased complexity and 2-3 times more bitrate of the side information.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Residual Coding Method of Spatial Audio Object Coding with Two-Step Coding Structure for Interactive Audio Services

Lee

Kim

Hahn

2016

IEICE Trans. Inf. & Syst.

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SUMMARYIn interactive audio services, users can render audio objects rather freely to match their desires and the spatial audio object coding (SAOC) scheme is fairly good both in the sense of bitrate and audio quality. But rather perceptible audio quality degradation can occur when an object is suppressed or played alone. To complement this, the SAOC scheme with Two-Step Coding (SAOC-TSC) was proposed. But the bitrate of the side information increases two times compared to that of the original SAOC due to the bitrate needed for the residual coding used to enhance the audio quality. In this paper, an efficient residual coding method of the SAOC-TSC is proposed to reduce the side information bitrate without audio quality degradation or complexity increase. key words: interactive audio service, spatial audio object coding, residual coding

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Section: Spatial Audio Object Codingmentioning

confidence: 99%

Section: Spatial Audio Object Codingmentioning

confidence: 99%

Section: Spatial Audio Object Codingmentioning

confidence: 99%

Section: Spatial Audio Object Codingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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