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Many existing perceptual audio codec standards define only the bit stream syntax and associated decoder algorithms, but leave many degrees of freedom to the encoder design. For a systematic optimization of encoder parameters as well as for education and training of experienced test listeners, it is instrumental to provoke and subsequently assess individual coding artifact types in an isolated fashion with controllable strength. The approach presented in this paper consists of a pre-selection of suitable test audio content in combination with forcing a specially modified encoder into non-common operation modes to willingly generate controlled coding artifacts. In conclusion, subjective listening tests were conducted to assess the subjective quality for different parameters and test content.
Author (s): Dick, Sascha; Schinkel-Bielefeld, Nadja; Disch, Sascha
Affiliation:
Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; Silvantos GmbH, Erlangen, Germany; Fraunhofer IIS, Erlangen, Erlangen, Germany
(See document for exact affiliation information.)
AES Convention: 143
Paper Number:9809
Publication Date:
2017-10-06
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Session subject:
Signal Processing
Permalink: https://aes2.org/publications/elibrary-page/?id=19206
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Dick, Sascha; Schinkel-Bielefeld, Nadja; Disch, Sascha; 2017; Generation and Evaluation of Isolated Audio Coding Artifacts [PDF]; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; Silvantos GmbH, Erlangen, Germany; Fraunhofer IIS, Erlangen, Erlangen, Germany; Paper 9809; Available from: https://aes2.org/publications/elibrary-page/?id=19206
Dick, Sascha; Schinkel-Bielefeld, Nadja; Disch, Sascha; Generation and Evaluation of Isolated Audio Coding Artifacts [PDF]; Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany; Silvantos GmbH, Erlangen, Germany; Fraunhofer IIS, Erlangen, Erlangen, Germany; Paper 9809; 2017 Available: https://aes2.org/publications/elibrary-page/?id=19206