4チャンネルステレオ (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "4チャンネルステレオ" in Japanese language version.

refsWebsite
Global rank Japanese rank
800th place
2,213th place
8,312th place
535th place

espacenet.com

worldwide.espacenet.com

  • US patent 3632886, Scheiber; Peter (Peekskill, NY), "QUADRASONIC SOUND SYSTEM", issued 1972-1-4 

kahaku.go.jp

sts.kahaku.go.jp