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We present in this paper a near-lossless full-band stereo compression scheme, Conditionally Lossless Encoding under Allowed Rates (CLEAR), aiming at its use in real-time transmission of sound data, sounds to be mixed or processed after transmitted. Using uniform quantizer with MPEG-4 Audio Lossless Coding (ALS) and adaptive pre- and post-processing, CLEAR controls the encoding bit rate with maximum fidelity of reconstructed signals. Objective experiments show an enhancement in signal to noise ratio (SNR) and from conventional low-delay codecs with compatible perceptual quality. Additionally, companding-based perceptual weighting designed for CLEAR is shown to make an improvement in Perceptual Evaluation of Audio Quality (PEAQ).
Author (s): Sugiura, Ryosuke; Kamamoto, Yutaka; Harada, Noboru; Kawanishi, Takahito; Moriya, Takehiro
Affiliation:
NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Laboratories, Kanagawa, Japan; NTT Communicatin Science Labs, Atsugi-shi, Kanagawa-ken, Japan; 1NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Labs, Atsugi-shi, Kanagawa-ken, Japan
(See document for exact affiliation information.)
AES Convention: 143
Paper Number:9899
Publication Date:
2017-10-06
Import into BibTeX
Session subject:
Applications in Audio
Permalink: https://aes2.org/publications/elibrary-page/?id=19296
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Sugiura, Ryosuke; Kamamoto, Yutaka; Harada, Noboru; Kawanishi, Takahito; Moriya, Takehiro; 2017; CLEAR: Conditionally Lossless Encoding under Allowed Rates for Low-Delay Sound Data Transmission [PDF]; NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Laboratories, Kanagawa, Japan; NTT Communicatin Science Labs, Atsugi-shi, Kanagawa-ken, Japan; 1NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Labs, Atsugi-shi, Kanagawa-ken, Japan; Paper 9899; Available from: https://aes2.org/publications/elibrary-page/?id=19296
Sugiura, Ryosuke; Kamamoto, Yutaka; Harada, Noboru; Kawanishi, Takahito; Moriya, Takehiro; CLEAR: Conditionally Lossless Encoding under Allowed Rates for Low-Delay Sound Data Transmission [PDF]; NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Laboratories, Kanagawa, Japan; NTT Communicatin Science Labs, Atsugi-shi, Kanagawa-ken, Japan; 1NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Kanagawa, Japan; NTT Communication Science Labs, Atsugi-shi, Kanagawa-ken, Japan; Paper 9899; 2017 Available: https://aes2.org/publications/elibrary-page/?id=19296
@article{sugiura2017clear:,
author={sugiura ryosuke and kamamoto yutaka and harada noboru and kawanishi takahito and moriya takehiro},
journal={journal of the audio engineering society},
title={clear: conditionally lossless encoding under allowed rates for low-delay sound data transmission},
year={2017},
number={9899},
month={october},}
TY – paper
TI – CLEAR: Conditionally Lossless Encoding under Allowed Rates for Low-Delay Sound Data Transmission
AU – Sugiura, Ryosuke
AU – Kamamoto, Yutaka
AU – Harada, Noboru
AU – Kawanishi, Takahito
AU – Moriya, Takehiro
PY – 2017
JO – Journal of the Audio Engineering Society
VL – 9899
Y1 – October 2017