Kohji Matsubayashi (松林弘治)

Things I learned on Phono EQ curves, Pt. 5

の続きです。

This article is a sequel to “Things I learned on Phono EQ curves, Pt.0”, “Pt.1”, “Pt.2”, “Pt.3” and “Pt.4”.

前回 は、トーキー映画用のディスク録音、民生用長時間レコード、放送局用トランスクリプション盤、ベル研/WEの縦振動トランスクリプション盤など、あれこれについて調べました。

On the previous part, I studied on the history of the “sound-on-disc” soundtracks for talking motion pictures, “Program Transcription” long playing record for consumer, Electrical Transcription discs for radio industry, Bell/WE’s vertical transcription technology, etc.

今回はその続きで、放送局用の横振動記録レコードのあれこれ、及び初の録音再生統一カーブ策定の流れについて学んでいきます。

This time, I am going to continue learning the history, including the lateral transcription records, as well as the first standardization of recording/reproducing curve.

Mr. Frederick and Mr. Stokowski (1932)

source: “Adoustical Scoiety Hears New Vertical Recordings”, Bell Laboratories Record, Vol.10, No. 10, June 1932, p.370.

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Kohji Matsubayashi (松林弘治)

Things I learned on Phono EQ curves, Pt. 4

Pt.0 (はじめに)」、「Pt.1 (定速度と定振幅、電気録音黎明期)」、「Pt.2 (世界初の電気録音、Brunswick Light-ray、ラジオ業界の脅威)」そして「Pt.3 (Blumlein システム、当時のRCAやColumbia、民生用における高域プリファレンスの萌芽)」の続きです。

This article is a sequel to “Things I learned on Phono EQ curves, Pt.0”, “Pt.1”, “Pt.2” and “Pt.3”.

前回 は、大恐慌時代の1930年代前半、WE特許使用料回避のため生まれたBlumleinシステムや、当時のRCA VictorやColumbiaの状況など、あれこれについて調べました。

On the previous part, I studied on the history of the improvement of disc recording technology for commercial discs, including the Blumlein system, situations of RCA Victor and Columbia in the 1930s (during the Great Depression), etc.

今回は、民生用ではなく、映画用・放送局向けのレコード技術の話、そして初めてS/N比向上の目的で意識的に高域プリエンファシスが用いられた録音技術について学んでいきます。

This time, I am going to continue learning the history, from the disc recording technology for professional talking motion pictures and broadcast stations (not regular records for consumer market), and the very important technology that consiously used treble pre-emphasis for the first time in history, to increase S/N ratio.

Vertical cutting vs Lateral cutting (Read, 1952)

source: “The Recording and Reproduction of Sound”, Oliver Read, 2nd Edition, 1952, p.21, Fig. 3-3B.
縦振動記録(左)と横振動記録(右)の比較

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Kohji Matsubayashi (松林弘治)

Things I learned on Phono EQ curves, Pt. 3

Pt.0 (はじめに)」、「Pt.1 (定速度と定振幅、電気録音黎明期)」、そして「Pt.2 (世界初の電気録音、Brunswick Light-ray、ラジオ業界の脅威)」の続きです。

This article is a sequel to “Things I learned on Phono EQ curves, Pt.0”, “Pt.1” and “Pt.2”.

前回 は、電気録音黎明期のあれこれについて調べました。今回は、その後発展していく電気録音について引き続き調べていきます。

On the previous part, I studied on more of the history of Electrical Recording in its very early years, along with several digressions… This time, I am going to continue learning the evolution of the electrical recording.

American Epic; Recording The {Twenties, Thirties} Read More / 続きを読む