CORRECTION TO `EFFECTS ON DOWN-MIX ALGORITHMS ON QUALITY OF SURROUND SOUND` In the above paper,1 three errors occurred in the Appendix (p. 796). They include the term rms power, the values given in decibels, and the term output power 400 W (8 ohm). In Section A.1 the text should have read as follows. The values presented in Table 7 are digital signal levels in decibels referred to digital full scale. In other words, Ld 20 log(as /afs) where Ld is the signal level in decibels, as is the digital signal amplitude, and afs is the digital signal full-scale amplitude. In Section A.2 the term output power 400 W (8 ohm) should not be interpreted as the acoustical power produced by the subwoofer but as the electrical output power of the subwoofer`s amplifier delivered to the drive unit. 1S. K. Zielinski, F. Rumsey, and S. Bech, J. Audio Eng. Soc., vol. 51, pp. 780-798 (2003 Sept.).
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