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K. Ono, T. Nishiguchi, K. Matsui, and K. Hamasaki, "Portable Spherical Microphone for Super Hi-Vision 22.2 Multichannel Audio," Paper 8922, (2013 October.). doi: K. Ono, T. Nishiguchi, K. Matsui, and K. Hamasaki, "Portable Spherical Microphone for Super Hi-Vision 22.2 Multichannel Audio," Paper 8922, (2013 October.). doi:
Abstract: NHK has been developing a portable microphone for the simultaneous recording of 22.2ch multichannel audio. The microphone is 45 cm in diameter and has acoustic baffles that partition the sphere into angular segments, in each of which an omnidirectional microphone element is mounted. Owing to the effect of the baffles, each segment works as a narrow angle directivity and a constant beam width in higher frequencies above 6 kHz. The directivity becomes wider as frequency decreases and that it becomes almost omnidirectional below 500 Hz. The authors also developed a signal processing method that improves the directivity below 800 Hz.

@article{ono2013portable,
author={ono, kazuho and nishiguchi, toshiyuki and matsui, kentaro and hamasaki, kimio},
journal={journal of the audio engineering society},
title={portable spherical microphone for super hi-vision 22.2 multichannel audio},
year={2013},
volume={},
number={},
pages={},
doi={},
month={october},} @article{ono2013portable,
author={ono, kazuho and nishiguchi, toshiyuki and matsui, kentaro and hamasaki, kimio},
journal={journal of the audio engineering society},
title={portable spherical microphone for super hi-vision 22.2 multichannel audio},
year={2013},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={nhk has been developing a portable microphone for the simultaneous recording of 22.2ch multichannel audio. the microphone is 45 cm in diameter and has acoustic baffles that partition the sphere into angular segments, in each of which an omnidirectional microphone element is mounted. owing to the effect of the baffles, each segment works as a narrow angle directivity and a constant beam width in higher frequencies above 6 khz. the directivity becomes wider as frequency decreases and that it becomes almost omnidirectional below 500 hz. the authors also developed a signal processing method that improves the directivity below 800 hz.},}

TY - paper
TI - Portable Spherical Microphone for Super Hi-Vision 22.2 Multichannel Audio
SP - EP -
AU - Ono, Kazuho
AU - Nishiguchi, Toshiyuki
AU - Matsui, Kentaro
AU - Hamasaki, Kimio
PY - 2013
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2013 TY - paper
TI - Portable Spherical Microphone for Super Hi-Vision 22.2 Multichannel Audio
SP - EP -
AU - Ono, Kazuho
AU - Nishiguchi, Toshiyuki
AU - Matsui, Kentaro
AU - Hamasaki, Kimio
PY - 2013
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2013
AB - NHK has been developing a portable microphone for the simultaneous recording of 22.2ch multichannel audio. The microphone is 45 cm in diameter and has acoustic baffles that partition the sphere into angular segments, in each of which an omnidirectional microphone element is mounted. Owing to the effect of the baffles, each segment works as a narrow angle directivity and a constant beam width in higher frequencies above 6 kHz. The directivity becomes wider as frequency decreases and that it becomes almost omnidirectional below 500 Hz. The authors also developed a signal processing method that improves the directivity below 800 Hz.