Spatial Distribution of Signals Emitted by a Sigma-Delta Modulation-Driven Linear Digital Transducer Array

Cai Y, Mu Y, Wu M, Ma D, Yang J. Spatial Distribution of Signals Emitted by a Sigma-Delta Modulation-Driven Linear Digital Transducer Array. J Audio Eng Soc. 2013;61(3):99-112. Available from: https://aes.org/publications/elibrary-page/?id=16671

@article{Cai2013_16671,
  author = {Cai, Yefeng and Mu, Yongsheng and Wu, Ming and Ma, Dengyong and Yang, Jun},
  title = {{Spatial Distribution of Signals Emitted by a Sigma-Delta Modulation-Driven Linear Digital Transducer Array}},
  journal = {Journal of the Audio Engineering Society},
  volume = {61},
  number = {3},
  pages = {99--112},
  year = {2013},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16671}
}

TY  - JOUR
TI  - Spatial Distribution of Signals Emitted by a Sigma-Delta Modulation-Driven Linear Digital Transducer Array
AU  - Cai, Yefeng
AU  - Mu, Yongsheng
AU  - Wu, Ming
AU  - Ma, Dengyong
AU  - Yang, Jun
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 61
IS  - 3
SP  - 99
EP  - 112
PY  - 2013
DA  - 2013/03/06
UR  - https://aes.org/publications/elibrary-page/?id=16671
PB  - Audio Engineering Society
LA  - en
AB  - Combing sigma-delta modulation with digital drivers in a loudspeaker array adds an extra dimension of flexibility because a smaller number of transducers can each be driven with a unique digital signal. The drive signal is effectively a vector. This architecture has the advantage of high integration, smaller size, lower cost, and improved electroacoustic efficiency. Based on simulations and experiments, it is clear the various performance metrics, such as sound pressure level, signal-to-noise, and harmonic distortion, are a function of the spatial angle relative to the midline. Because of the differences in acoustic path length, the quantization noise in the channels may no longer cancel at some angles.
ER  -