A Digitally Direct Driven Dynamic-Type Loudspeaker

Kuroki K, Saito R, Shinkawa N, Tsuchiya T, Yasuda A. A Digitally Direct Driven Dynamic-Type Loudspeaker. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7344. Available from: https://aes.org/publications/elibrary-page/?id=14474

@inproceedings{Kuroki2008_14474,
  author = {Kuroki, Kazushige and Saito, Ryota and Shinkawa, Naoto and Tsuchiya, Tomohiro and Yasuda, Akira},
  title = {{A Digitally Direct Driven Dynamic-Type Loudspeaker}},
  booktitle = {AES Convention 124},
  note = {Paper 7344},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14474}
}

TY  - CPAPER
TI  - A Digitally Direct Driven Dynamic-Type Loudspeaker
AU  - Kuroki, Kazushige
AU  - Saito, Ryota
AU  - Shinkawa, Naoto
AU  - Tsuchiya, Tomohiro
AU  - Yasuda, Akira
T2  - AES Convention 124
M1  - Paper 7344
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14474
PB  - Audio Engineering Society
LA  - en
AB  - If the speaker can be driven digitally, it becomes possible to perform all processes from the input to the output digitally without analog components such as a power amplifier, and a small, light, and high-quality speaker system can be achieved. In this paper, we propose a basic idea of Digital-Speaker and a digital-driven dynamic-type loudspeaker that provided with multiple-voice coils employing multi-bit delta-sigma modulation. The piezo-electric-speaker, which was utilized in previous paper, is replaced with the voice coil. The prototype implemented with a FPGA, CMOS drivers, and dynamic-type loudspeaker. THD and SPL are about 0.42% and 104dB, and the output power is 1W even when power supply is 1V.
ER  -