低遅延・帯域制限オーディオコーデック装置の試作

長谷川 馨亮; 野口 賢一; 森住 俊美; 中嶋 淳一; 兼清 知之; 杉浦 亮介; 鎌本 優; 守谷 健弘; 小田 秀朗; 川島 修

doi:10.11485/itetr.41.23.0_37

41.23 Broadcasting and Communication Technologies(BCT)

Session ID : BCT2017-70

DOI https://doi.org/10.11485/itetr.41.23.0_37

Conference information

Host: Broadcasting and Communication Technologies(BCT)

Name : Broadcasting and Communication Technologies(BCT)

Date : July 27, 2017 - July 28, 2017

Prototyping of Low-Delay Audio Codec Appliance for Bandlimited Network

*Keisuke HASEGAWA, Kenichi NOGUCHI, Toshiharu MORIZUMI, Junichi NAKAJIMA, Tomoyuki KANEKIYO, Ryosuke SUGIURA, Yutaka KAMAMOTO, Takehiro MORIYA, Hideaki ODA, Osamu KAWASHIMA

Author information

*Keisuke HASEGAWA [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Kenichi NOGUCHI [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Toshiharu MORIZUMI [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Junichi NAKAJIMA [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Tomoyuki KANEKIYO [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Ryosuke SUGIURA [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Yutaka KAMAMOTO [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Takehiro MORIYA [Japan]
Nippon Telegraph and Telephone Corp. [Japan]
Hideaki ODA [Japan]
Tokyo FM Broadcasting Co.,Ltd. [Japan]
Osamu KAWASHIMA [Japan]
Tokyo FM Broadcasting Co.,Ltd. [Japan]

Keywords: Audio-speech coding, Audio material transmission, Bandlimited network, Codec appliance

CONFERENCE PROCEEDINGS FREE ACCESS

Details

Abstract

We devised CLEAR (Conditionally Lossless Encoding under Allowed Rates) method to transmit high-quality audio signal with low-delay under limited network capacity, and a prototype of low-delay audio codec appliance was developed. This paper presents an outline of the prototype codec and the result of radio voice transmission experiment on a commercial line.

Corresponding author

Register with J-STAGE for free!