SDM versus LPCM: the debate continues
نویسنده
چکیده
Significant misrepresentation of both 1-bit SDM and multi-bit LPCM coding paradigms persist within both professional and commercial arenas that impacts directly upon the perception of DVD-A and SACD formats. A balanced appraisal of these schemes is presented in order to expose the core differences in the technology both in the theoretical and instrumentation domains. Some observations are made about the fallacy of performance comparisons and the consequence of misinformation that subsequently is derived. Abbreviations ADC analogue-to-digital converter DAC digital-to-analogue converter DSD direct stream digital SDM sigma-delta modulator DVD_A digital versatile disc (audio) DVD_V digital versatile disc (video) LFM linear frequency modulation LPCM linear pulse-code modulation PDF probability density function PWM pulse-width modulation PZC positive zero crossing NPWM naturally sampled pulse-width modulation SACD super-audio compact disc UHRA ultra-high resolution audio
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تاریخ انتشار 2001