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Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
NMR Measurements on Multiple Generations Audio Coding
With the advent of low bit-rate coding in studio and consumer applications, multiple generations (tandem) coding becomes reality. It is reported that depending on the algorithms and bit rates employed, the final sound quality may decrease significantly. The noise-to-mask ratio (NMR) perceptual measurement is capable of evaluating the margin toward audibility. The results of numerous measurements on typical tandem combinations will be presented, and the consequences on multiple generations coding will be discussed.
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