D. Kuniyoshi, H. Ohtani, J. Okamura, R. Suzuki, K. Tsuihiji, and A. Yasuda, “A Novel Universal-Serial-Bus-Powered Digitally Driven Loudspeaker System with Low Power Dissipation and High Fidelity,” in Proc. AES Convention 129, Nov. 2010, Paper 8236. [Online]. Available: https://aes.org/publications/elibrary-page/?id=15658
Kuniyoshi D, Ohtani H, Okamura J, Suzuki R, Tsuihiji K, Yasuda A. A Novel Universal-Serial-Bus-Powered Digitally Driven Loudspeaker System with Low Power Dissipation and High Fidelity. In: AES Convention 129. Audio Engineering Society; 2010. Paper 8236. Available from: https://aes.org/publications/elibrary-page/?id=15658
@inproceedings{Kuniyoshi2010_15658,
author = {Kuniyoshi, Daigo and Ohtani, Hajime and Okamura, Junichi and Suzuki, Ryouta and Tsuihiji, Kenzo and Yasuda, Akira},
title = {{A Novel Universal-Serial-Bus-Powered Digitally Driven Loudspeaker System with Low Power Dissipation and High Fidelity}},
booktitle = {AES Convention 129},
note = {Paper 8236},
year = {2010},
month = nov,
publisher = {Audio Engineering Society},
url = {https://aes.org/publications/elibrary-page/?id=15658}
}
TY - CPAPER
TI - A Novel Universal-Serial-Bus-Powered Digitally Driven Loudspeaker System with Low Power Dissipation and High Fidelity
AU - Kuniyoshi, Daigo
AU - Ohtani, Hajime
AU - Okamura, Junichi
AU - Suzuki, Ryouta
AU - Tsuihiji, Kenzo
AU - Yasuda, Akira
T2 - AES Convention 129
M1 - Paper 8236
PY - 2010
DA - 2010/11/06
UR - https://aes.org/publications/elibrary-page/?id=15658
PB - Audio Engineering Society
LA - en
AB - We propose a novel digitally driven speaker system (DDSP) in which a newly devised mismatch shaper method, multi-level noise shaping dynamic element matching (ML-NSDEM), is utilized so as to realize high fidelity, high sound power level (SPL), and low power dissipation. The ML-NSDEM unit can easily increase the number of sound pressure levels by using an H-bridge circuit even when the number of sub-speakers is fixed. It reduces the noise caused by quantization and speaker mismatches; it also decreases the switching loss. The output SPL equipped with six voice coils is 94dB/m when a 3.3V USB power supply is used exclusively. The power efficiency is 90%@0dBFS and 75%@ -20 dBFS.
ER -
