Design and Performance of a Sigma–Delta Digital Loudspeaker Array Prototype*
نویسنده
چکیده
Digital loudspeaker arrays (DLAs) are electroacoustic transducers reconstructing acoustic signals out of binary audio streams, usually consisting of a digital signal processing module driving multiple actuators (small loudspeakers). In this work a DLA prototype was implemented using an all-digital audio chain driven by 1-bit sigma–delta signals. The prototype implementation is described and its performance measured and evaluated using frequencydomain and THD analysis. These results also compare the DLA performance when driven by either sigma–delta or PCM input signals.
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