Transactions of the Society of Motion Picture Engineers ( Volume: 7, Issue: 16A, May 1923)

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A Preliminary Note on the Uniform Development of Motion Picture Film

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Listening for impairments introduced by multichannel audio codecs is an important task. Classical objective methods are not adequate in assessing audio coding schemes. Accordingly, International Telecommunications Union Recommendations Section (ITU-R) Recommendations BS.1116 and BS.1534-1 provide guidelines for subjective evaluation of codecs. This paper provides a tutorial on the proper conditions for reliable codec testing. Several key components covered are properly designing the experiment; selecting the listening panel and training listeners; developing the test methodology; selecting balanced program material, loudspeaker or room, and sound-field requirements; listening for artifacts; and analyzing statistics. This paper addresses these various components, including the sound-field requirements, because per the ITU, “The characteristics of the reference sound field at the listening area are most important for the subjective perception of, or the quality assessment of, auditory events and their reproducibility at other listening places or rooms. These characteristics result from the interaction of the loudspeaker(s) and the listening room.”
Publication Date: 1923-05-01
DOI: 10.5594/J18246
Link: https://doi.org/10.5594/J18246
Author(s): F. F. Renwick

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F. F. Renwick; A Preliminary Note on the Uniform Development of Motion Picture Film, Transactions of the Society of Motion Picture Engineers ( Volume: 7, Issue: 16A, May 1923); SMPTE, 1923. Available at https://doi.org/10.5594/J18246

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F. F. Renwick; A Preliminary Note on the Uniform Development of Motion Picture Film, Transactions of the Society of Motion Picture Engineers ( Volume: 7, Issue: 16A, May 1923); SMPTE, 1923. Available at https://doi.org/10.5594/J18246

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<span class="citation">F. F. Renwick; <cite>A Preliminary Note on the Uniform Development of Motion Picture Film</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 7, Issue: 16A, May 1923); SMPTE, 1923. Available at <a href="https://doi.org/10.5594/J18246" target="_blank" rel="noopener">https://doi.org/10.5594/J18246</a></span>

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<li>
F. F. Renwick; <cite id="bib-10-5594-j18246">A Preliminary Note on the Uniform Development of Motion Picture Film</cite>, Transactions of the Society of Motion Picture Engineers ( Volume: 7, Issue: 16A, May 1923); SMPTE, 1923
<span class="doi">10.5594/J18246</span>
</li>