Digital Loudspeaker Technology: Current State and Future Developments

Busbridge SC, Fryer PA, Huang Y. Digital Loudspeaker Technology: Current State and Future Developments. In: AES Convention 112. Audio Engineering Society; 2002. Paper 5518. Available from: https://aes.org/publications/elibrary-page/?id=11436

@inproceedings{Busbridge2002_11436,
  author = {Busbridge, Simon C. and Fryer, Peter A. and Huang, Yaxiong},
  title = {{Digital Loudspeaker Technology: Current State and Future Developments}},
  booktitle = {AES Convention 112},
  note = {Paper 5518},
  year = {2002},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11436}
}

TY  - CPAPER
TI  - Digital Loudspeaker Technology: Current State and Future Developments
AU  - Busbridge, Simon C.
AU  - Fryer, Peter A.
AU  - Huang, Yaxiong
T2  - AES Convention 112
M1  - Paper 5518
PY  - 2002
DA  - 2002/04/06
UR  - https://aes.org/publications/elibrary-page/?id=11436
PB  - Audio Engineering Society
LA  - en
AB  - A digital loudspeaker produces a quantised sound field directly from a digital stimulus without a digital to analogue converter. Reproduction accuracy improves if the conversion is done as late as possible in the audio chain. This paper assesses the relative merits of the two currently competing technologies, digital transducer arrays and multiple voice coils, as well as possible alternatives, by considering the underlying principles. The requirements for crossovers and drive electronics are discussed, and the performance of prototype systems is reported. Methods to extend the present manufacturability to 16 bits include the use of semiconductor mass fabrication techniques in the case of arrays and applications of oversampling and noise shaping. In the latter case the psychoacoustic implications must be understood.
ER  -