Experience "Emi Fujita" HEADPHONE CONCERT 2021 "distributed in ASCII.jp High -resolution 4K

　On July 11, the live video of Emi Fujita's Headphone Concert 2021 with 4K image quality / high -resolution audio was distributed at the online live distribution service Thumva.The technology of "LIVE EXTREME" developed by Korg was adopted (related article).

Studio equipment such as venue scenery and Neumann's vacuum tube microphone is used.

　This concert was recorded and distributed by singer Emi Fujita, a high -resolution headphone concert "Emi Fujita" Acoustic Concert 2021 "held on February 18 and 19 this year.The high -resolution headphone concert is a trial that is more like a public recording rather than a live.Recording equipment for the studio is used for raw sound recording, and PA equipment (such as a loud speaker) used in regular concerts is not used.Participants bring their earphones and headphones to meet the recording, and enjoy the sounds of recording engineers listening on site as they are.

High -resolution quality live that can be enjoyed with a PC browser

　The concert is listened to with the download sound source on sale at e-onkyo Music, and is also reported on YouTube videos.The online live on July 11, which was distributed on Thumva using Live EXTREME, allows you to enjoy it with high -resolution sound quality and higher resolution image quality.

　In the distribution, the 4K master video and the high -resolution master audio taken on the day of the high -resolution headphone concert were encoded into the Live EXTREME format and streaming and distribution.

　Specifically, four types of "full HD image quality, voice quality 48kHz", "full HD image quality, audio 192kHz", "4K image quality, audio 48kHz", "4K image quality, voice quality 192kHz" can be selected.In the case of full HD image quality, the line speed of 20Mbps and 35Mbps or more is recommended for 4K image quality.

　Live videos are watched using web browsers instead of Thumva's dedicated app.Unfortunately, the Thumva app does not fully support Live Extreme, so it is recommended to enjoy it on Windows 10 or Mac web browsers to enjoy high -resolution sounds with Live Extreme.I used Chrome on Windows 10.

　高音質で楽しむためには、USB DACやDAC内蔵ヘッドホンアンプを用意するのがやはりオーディオ的な楽しみ方だ。筆者はサンプリングレートを確認する目的もあり、「Luxury & Precision W2」を使用した。Windowsマシンで試聴するために、付属の「USB-C to Cケーブル」と「USBアダプター」を使用した。Windows 10ではドライバーのインストールは不要なのでそのままUSB端子に接続するだけである。USB Type-C端子のあるパソコンならUSBアダプターも不要だ。

　The browser is also a more advanced music playback software than the general image.However, since there is no automatic sample rate conversion function that has software specializing in music regeneration such as Audirvana, it must be manually opened a PC mixer and make it the same as the sampling rate of the sound source (this procedure is Live Extreme.It is also described in the procedure of use).

　Windows10の場合は、サウンドの設定からLuxury & Precision W2のプロパティを開く。その詳細にプルダウンメニューがあるので、そこから対応するサンプリングレートを選択する。W2は32bit DACなのでビット数は32bitになる。そして「レベル」の項目では100%を選択する。音質維持のために音量の変更はあくまでW2側の音量ボタンを使用する。Macの場合には同じ手続きを「Audio/Midi設定」で行えばよい。

Delivery on Thumva

　To watch live, first create a Thumva account.Then, if you purchase a concert ticket, a ticket code will be issued, so register it with Thumva.You can see live distribution by referring to Myichi from My Page from my page from another computer or tablet.

　The online concert also has the opening time and the starting time, and when the opening time is open, the playback screen will be opened.It is better to check the settings of personal computers and playback equipment until the start time.I also check the sound when the engineer is checking the sound at a real event.