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  • Blue Note Japan LP Releases
    • A Chronological List of Blue Note Japan LP Releases (Index)
    • Blue Note Japan LP Releases: 1968-1977 (Toshiba Musical Industries – Toshiba EMI)
    • Blue Note Japan LP Releases: 1977-1983 (King)
    • Blue Note Japan LP Releases: 1983-1988 (Toshiba EMI)
    • Blue Note Japan LP Releases: 1989- (Toshiba EMI, EMI Music Japan, Universal Music Japan)
  • フォノEQカーブの歴史 / History of Phono EQ Curves
  • About This Website
  • Front cover of The Beau Brummels, Bradley's Barn (Warner Bros.-Seven Arts WS 1760)

    The 90 Degrees Hidden in Bradley’s Barn: Haeco-CSG on a 1968 LP

    2026/10/08 Kohji Matsubayashi (松林弘治)

    The Beau Brummels の 1968年の LP、Bradley’s Barn の裏ジャケットには Haeco-CSG を使ったとあります。モノーラル再生のために左右の位相をずらすこの処理は、溝に本当に刻まれているのか。盤起こしして測ると、右チャンネルが約 90° 遅れていました。例外の1曲もありました。

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  • "NEW! STEREO RECORDS PAGE 98" on the cover of the Schwann Long Playing Record Catalog, June 1958 (eyecatch)

    What Was the CBS “Compatible Stereo Record,” and Why Did It Vanish?

    2026/10/06 Kohji Matsubayashi (松林弘治)

    ステレオ盤を当時のモノーラルの針でかけると、盤が傷む。1958年の業界はそう見ていました。CBS 研究所が出した答えが、溝の縦の振れを絞った「互換ステレオ盤」です。しかし市販はされませんでした。連作第1回では、なぜ互換ステレオ盤は消えたのか、当時の業界誌や論文、特許からたどります。

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  • Fabiano do Nascimento & Vittor Santos Orquestra's Vila album cover (Far Out Recordings), with the article title Saudade for a Place I've Never Been: Listening Notes on Fabiano do Nascimento's Vila

    Saudade for a Place I’ve Never Been: Listening Notes on Fabiano do Nascimento’s Vila

    2026/08/27 Kohji Matsubayashi (松林弘治)

    Fabiano do Nascimento と Vittor Santos Orquestra による新作『Vila』。幼少期を過ごした Rio の vila を描いた一枚について、聴いて感じたことと調べたことをまとめました。

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  • Charles Mingus's Pre-Bird album cover — the 1999 Verve Master Edition CD (314 538 636-2), reproducing the original 1960 Mercury LP jacket design (Mercury SR-60627) — with the article title 'Charles Mingus's Pre-Bird, and the voices left on the offcuts'

    Charles Mingus “Pre-Bird” と、テープの「切れ端」に残された声

    2026/08/04 Kohji Matsubayashi (松林弘治)

    Charles Mingus が 1960年に Mercury へ吹き込んだ “Pre-Bird”。10人のコンボから 22人編成まで曲ごとに姿を変えるこの盤の 1999年 CD には、スタジオの会話とテープの継ぎ目という、普通は聞こえず見えないはずのものが残されていた。

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  • Charlie Mingus's Tijuana Moods (Bluebird First Editions reissue) album cover, with the article title Revisiting Tijuana Moods: the voices and the seams left on the session tapes

    Revisiting “Tijuana Moods”: the voices and the seams left on the session tapes

    2026/08/04 Kohji Matsubayashi (松林弘治)

    Charles Mingus’s Tijuana Moods, twenty years on: voices between takes, 37 splices, skipped take numbers and digital silence on the 1957 RCA session tapes.

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  • Joe Dukes, Red Holloway, George Benson, and Brother Jack McDuff performing at the Antibes Jazz Festival, 1964 (photo collage)

    グルーヴマシンの録音を追いかけて (I): 4人の奇跡の2年間

    2026/07/11 Kohji Matsubayashi (松林弘治)

    Jack McDuff のオルガン、Red Holloway のテナー、George Benson のギター、Joe Dukes のドラムス。1963〜65 年の Prestige 録音を、セッション単位で聴き直すシリーズ第 1 回。4 人がそれぞれどんなプレイヤーで、なぜ噛み合っていたのかを、本人証言と聴取で書く。

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CBS executive with stacks of LP and 78rpm records, 1948

Things I learned on Phono EQ curves, Pt.11

2023/03/25 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

1948年6月18日にColumbia LP初登場、その壮大な歴史物語を学びました / On Pt.11, I learned on the advent of Columbia’s Long Playing Microgroove records, and its complicated history.

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1949 NAB lateral recording characteristic chart

Things I learned on Phono EQ curves, Pt. 10

2023/01/08 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

1949年改訂版NAB標準規格策定の流れを学びました / On Pt.10, I learned on the history of the formulation of the 1949 NAB Standards, including maginetic recording standards.

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Gray Research 602 equalizer front panel

Things I learned on Phono EQ curves, Pt. 9

2022/12/20 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

第二次大戦中〜戦後のLP登場前夜のさまざまな状況について資料を調べてみました / On Pt.9, I learned on various situations in the US 1940s, until the advent of “microgroove” (fine groove) records.

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1942 NAB vertical/lateral recording characteristics, hand-drawn original

Things I learned on Phono EQ curves, Pt. 8

2022/12/06 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

1942年「NAB録音・再生標準規格」の策定に至る歴史を学びました / On Pt.8, I learned on the history and background of the formulation of 1942 NAB Standards.

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Shure Zephyr crystal record reproducer, 1937

Things I learned on Phono EQ curves, Pt. 7

2022/11/30 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

圧電ピックアップの誕生、ジュークボックス、定振幅録音再生の試みなどを学びました / On Pt.7, I learned on piezoelectric pickups, jukeboxes, an attempt of constant-amplitude recording/reproducing etc.

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Presto Model A recorder

Things I learned on Phono EQ curves, Pt. 6

2022/11/18 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

アセテート盤録音機とラッカー盤、高調波歪、軽針圧ピックアップなどを学びました / On Pt.6, I learned on Instantaneous DIsc Recorders and Lacquer discs, Harmonic distortion, Lightweight pickups, etc.

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Leopold Stokowski and Harvey Fletcher at Constitution Hall, 1933

Things I learned on Phono EQ curves, Pt. 5

2022/11/02 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Classical, Jazz, Recording & Playback Technology / 録音再生技術 Leave a comment

ストコフスキーとベル研、RCA/NBCトランスクリプション、Orthacousticカーブなどを学びました / On Pt.5, I learned on Stokowski=Bell Labs collaboration, RCA/NBC Transcription, and Orthacoustic curve.

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Vitaphone demonstration, 1926

Things I learned on Phono EQ curves, Pt. 4

2022/10/17 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

Vitaphone とトランスクリプション盤、縦振動トランスクリプションの革新を学びました / On Pt. 4, I learned on Vitaphone, Electrical Transcription, innovation of Bell/WE vertical recording technology.

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Western Electric recording lathe and Scully cutter setup, The American Epic Sessions

Things I learned on Phono EQ curves, Pt. 3

2022/10/10 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

BlumleinやRCA Victorの録音システムの進歩、マイクの特性などを学びました / On Pt. 3, I learned the history of the development including Blumlein system, RCA Victor system, and microphones.

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Brunswick Panatrope advertisement, 1927

Things I learned on Phono EQ curves, Pt. 2

2022/10/03 Kohji Matsubayashi (松林弘治) 33rpm, 45rpm, 78rpm, Recording & Playback Technology / 録音再生技術 Leave a comment

世界初の電気録音・電蓄、ラジオ業界の脅威について学んでみました / On Pt. 2, I learned more of the history – world’s first electrical recording, first electrical player, and radio craze.

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Recent Articles / 最近の投稿

  • The 90 Degrees Hidden in Bradley’s Barn: Haeco-CSG on a 1968 LP
  • What Was the CBS “Compatible Stereo Record,” and Why Did It Vanish?
  • Where Did the 0.5 mil Stereo Stylus Go?
  • Saudade for a Place I’ve Never Been: Listening Notes on Fabiano do Nascimento’s Vila
  • Charles Mingus “Pre-Bird” と、テープの「切れ端」に残された声

Recent Comments / 最近のコメント

  • Kohji Matsubayashi (松林弘治) on 曲名とアーティスト名と収録アルバム名が全て一緒のってどれくらいある?
  • レブン on 曲名とアーティスト名と収録アルバム名が全て一緒のってどれくらいある?
  • Kohji Matsubayashi (松林弘治) on なぜ小学校で今も「ジンギスカン」? — 運動会定番曲の起源
  • MIDORI on なぜ小学校で今も「ジンギスカン」? — 運動会定番曲の起源
  • Kohji Matsubayashi (松林弘治) on なぜ小学校で今も「ジンギスカン」? — 運動会定番曲の起源

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microgroove.jp
  • Home
  • Blue Note Japan LP Releases
    • A Chronological List of Blue Note Japan LP Releases (Index)
    • Blue Note Japan LP Releases: 1968-1977 (Toshiba Musical Industries – Toshiba EMI)
    • Blue Note Japan LP Releases: 1977-1983 (King)
    • Blue Note Japan LP Releases: 1983-1988 (Toshiba EMI)
    • Blue Note Japan LP Releases: 1989- (Toshiba EMI, EMI Music Japan, Universal Music Japan)
  • フォノEQカーブの歴史 / History of Phono EQ Curves
  • About This Website