The Hammond organ
Frequencies cast into metal bumps, tone pulled on drawbars — gospel on Sunday morning, jazz on Saturday night
Related
The last two pages wrote electronic instruments whose frequencies live in circuits.
This page's instrument casts its frequencies into metal — a gear, a ring of bumps.
「每个音轮边缘有一圈凸点；凸点的数量与轮的转速，决定该音的频率」.
⭐⭐ This page is the Hammond tonewheel organ — fourth in the electronic section. One line: the frequency is cast into metal.
| Class | Assignment |
|---|---|
| HS class | electromechanical（tonewheels generating current, not electronic oscillators）· full polyphony · ⭐ strictly speaking not an 「electronic」 instrument |
| Origin | ⭐⭐ 1935, by Laurens Hammond（a clockmaker-inventor, not a musician）— sold to churches as a low-cost pipe-organ substitute |
| Two numbers | ⭐⭐ 96 tonewheels → nine harmonics（one drawbar each）· about two million built |
| Bayin note | Outside the bayin — born in Chicago on the eve of the Depression |
⭐⭐ The main line: the gear casts the pitch into metal
The theremin's frequency lives in an oscillator circuit; the Martenot's too — the Hammond's lives in gears and bumps:
「同步电机通过轴与齿轮带动音轮——齿轮比决定每个轮的转速，整个齿轮系持续旋转。每只音轮旁有一只电磁拾取器，凸点掠过时磁场波动，在线圈里产生周期性电压——一个音」.
⭐⭐ Faster wheel, higher pitch; denser bumps, higher pitch — the frequency is not tuned, it is cast.
⭐⭐ A mirror of the electric-guitar pickup: the guitar is string moving, field moving; the Hammond is wheel moving, field moving — the same induction, with the string swapped for a gear.
⭐⭐ And taxonomically it is 「electromechanical」, not 「electronic」: 「波形由机械音轮而非电子振荡器产生」— ⭐ which is exactly why it files under 「early electronic」 rather than the electronic canon（one of this site's classification scruples）.
⭐⭐ Drawbars: mixing waves mid-performance — additive synthesis before the word
The pipe organ's tone lives in stops — chosen before playing. The Hammond moved the choice into performance:
「拉杆（drawbars）是双键盘上方的金属滑杆，像调音台的推子——拉出越多，该谐波越响；推到底音量归零。拉杆的命名源自管风琴的音栓系统——按音管的物理长度命名」.
⭐⭐ The drawbars mix the fundamental, the sub-octave and the overtones — 「designing the timbre」 moved from the organ's pre-chosen stops to live mixing.
⭐⭐ This is additive synthesis before the textbooks: 「模仿管风琴多组音管，用谐波序列波形的加法合成生成声音」— chapter one of the synthesizer manuals was played on this organ for thirty years.
⭐⭐ The B-3's drawbars are its secret weapon: 「每手九根拉杆实时混合谐波——拉出前两根是温暖如笛的爵士音；九根全拉就是尖叫般谐波复杂的摇滚音」.
⭐⭐ Key click: the third 「flaw into signature」
「那个独特的 key click（按键咔嗒声）原本是设计缺陷，迅速成为『Hammond 音色』的一部分，现代仿制品努力复现它」.
⭐⭐ Third time across this site: Ted Nugent's feedback（electric guitar）· the Martenot's lateral keys（vibrato）· the Hammond's key click — a flaw becoming a signature is close to a law. ⭐ And this one is the most thorough: the flaw became something people now pay to buy back.
⭐⭐ The Leslie: a rival becomes standard equipment
A rare market comedy in instrument history:
「Don Leslie 设计的扬声器被广泛用于 Hammond 风琴——尽管 Leslie 起初是 Hammond 想挤垮的竞争公司」.
⭐⭐ Where the Leslie sound comes from: 「旋转的喇叭与带旋转挡板的固定低音扬声器，产生颤音效果」— the Doppler effect moved into a speaker cabinet; 「电子管功放给 Hammond 一种温暖自然的过载——从轻微『呼噜』到重度咆哮」.
⭐⭐ 「很快，Leslie 音箱成了 Hammond 玩家的 de facto 必备」— the complete voice of the organ = the instrument + the rival's speaker it once tried to destroy.
⭐⭐ The market: church → jazz → rock
「最初卖给教堂，作为管风琴的低价替代」.
⭐⭐ But jazz players found another life: 「它很快受到职业爵士乐手欢迎——organ trio； 爵士俱乐部老板发现 organ trio 比请大乐队便宜」.
⭐⭐ Jimmy Smith's B-3 changed everything: 「他的演奏单枪匹马确立了爵士风琴三重奏这一主要形式」; through the 60s–70s into R&B · rock（especially prog）· reggae.
⭐⭐ Two deities on the rock side: Keith Emerson — 「把 Hammond 演奏变成体育竞技，在台上真的动手打乐器」; Jon Lord（Deep Purple） — 「把 C-3 接进 Marshall 音箱，咆哮着与吉他竞争」.
⭐⭐ One line: 「Hammond 是周日早上与周六晚上的声音——福音的狂喜与爵士的老练、摇滚的放纵与灵魂乐的砂砾」（⭐ beside the theremin's「eerie」and the Martenot's「lyrical」: the Hammond's character is 「fervent」）.
⭐ Why the pedalboard has only 25 notes
「Hammond 用 25 键脚踏板是因为他发现——传统 32 键教堂踏板的最上七个音很少被用到」.
⭐⭐ Leaving out the parts nobody used — a kindness only engineers do （the 32-note AGO board survives only on the Concert models）.
⭐ One more detail: 「手键盘与踏板最初用钯合金线制造，保证按键电连接—— 音轮风琴含 3.2–8.4 克钯」— ⭐ a pinch of precious metal hiding in the instrument.
⭐⭐ Decline and resurrection
「1975 年放弃音轮转向集成电路，销量下滑，公司 1985 年倒闭」; the name was bought by Suzuki — 2002's「New B-3」recreates the original digitally.
⭐⭐ Clonewheel instruments — Korg CX3 · Roland VK-7 · Nord Electro — the name itself is an homage; 「用现代软件仿真音轮 Hammond 的声音是困难的，因为音轮之间的相位关系难以复制」.
⭐⭐ The instrument's 「flaw」（gear phase relationships）is the one thing even digitisation cannot copy — mechanical imperfection became its deepest moat.
Recap: three sentences on the tonewheel organ
| Q | A |
|---|---|
| ⭐ The key point | ⭐⭐ the frequency is cast into metal — 91 tonewheels · bumps × speed = frequency · synchronous motor + gear ratios; ⭐⭐ taxonomically 「electromechanical」, not 「electronic」（the wave comes from spinning metal） |
| ⭐⭐ Drawbars | ⭐⭐ nine sliders above the manuals mixing harmonics live（fundamental + sub-octave + overtones）— additive synthesis before the word; ⭐ 「two drawbars = jazz; all nine = rock」 |
| ⭐⭐ Key click | ⭐⭐ a design flaw → part of the Hammond sound → imitated on purpose（the site's third 「flaw into signature」） |
| ⭐⭐ Leslie | ⭐⭐ a rival becomes standard equipment: Don Leslie's rotating speaker（Doppler tremolo）— Hammond tried to crush it; it became de facto mandatory; tube-amp warmth from 「purr」 to 「growl」 |
| ⭐⭐ The market | church substitute → jazz organ trio（cheaper than a big band）→ Jimmy Smith's B-3 → R&B/rock/reggae; Emerson 「attacked the instrument on stage」 · Lord drove a C-3 into a Marshall |
| ⭐ Character | ⭐⭐ 「the sound of Sunday morning and Saturday night」— gospel ecstasy and jazz sophistication（beside the theremin's eerie and the Martenot's lyrical: the Hammond is fervent） |
| ⭐ Two numbers | 96 tonewheels → nine harmonics · ~2 million built; B-3 = twin 61-note manuals + 25-note pedals |
| ⭐ 25 pedals | ⭐ 「the top seven notes of the traditional 32 were seldom used」— an engineer's kindness; keyboards wired with palladium alloy（3.2–8.4 g of palladium per organ） |
| ⭐⭐ Decline & rebirth | 1975 tonewheels dropped → 1985 bankruptcy → Suzuki → 2002 digital New B-3; ⭐⭐ clonewheels cannot copy the gear phase relationships — mechanical imperfection became the deepest moat |
| HS | electromechanical（tonewheel generation）— outside the electronic canon by strict taxonomy |
The pipe organ's tone lives in its pipes; the Hammond's lives in its bumps.
⭐⭐ The church bought it to save money; jazz ran trios on it; rock plugged it into a Marshall —
an instrument's fate is rarely written by its inventor; it is written by its first players.
音轮风琴属电机械乐器（音轮发电，非电子振荡器）。B-3 型双 61 键手键盘（各五八度）+ 25 键脚踏板（低音 C 到中音 C 两个八度）；91 只音轮产生九个谐波，由键盘上方九根拉杆实时调配（加法合成的先声）。按键无力度感应（音量由表情踏板控制），瀑布式键盘轻触利于快速乐句。复音完整（full polyphony）。记谱即实音。
Listen in the library
All tracks from midicn-lib — inline badge is the license tier (C1 commercial / C2 non-commercial / C3 study only).
Sources
- ⭐⭐ 主线：频率是「铸」进金属里的（本页最该记住的一条） —— 「音轮发声系统基于音轮（tonewheels）——风琴能产生的 91 个音各有各的轮」；「每个音轮边缘有一圈凸点；凸点的数量与轮的转速决定该音的频率」；「同步电机通过一组轴与齿轮带动音轮——齿轮比决定每个轮的转速；整个齿轮系持续旋转」；「每只音轮旁有一只电磁拾取器，凸点掠过时磁场波动，在线圈里产生周期性电压——一个音」→ ⭐⭐ 与特雷门/马特诺的电子振荡器对照：Hammond 的频率是机械铸出来的——齿轮咬合的那一刻，音高就定死了
- ⭐⭐ 分类学上它是「电机械」不是「电子」 —— 「严格说来，因为波形由机械音轮而非电子振荡器产生，最早的 Hammond 风琴是电机械（electromechanical）而非电子风琴」→ ⭐⭐ 本站较真的分类点：theremin/Martenot 是电鸣（无机械振动源），Hammond 是机电混合（机械转轮发电）——这也是它放进「早期电子」清单而非「电子」正典的原因
- ⭐⭐ drawbars：演奏中实时「调配波」——加法合成的先声 —— 「模仿管风琴多组音管的音栓系统，Hammond 用谐波序列波形的加法合成生成声音」；「拉杆（drawbars）是装在双键盘上方的金属滑杆，像调音台的推子——拉出越多，该谐波越响」；「音栓的命名源自管风琴的 stop 系统——按音管的物理长度命名」；⭐⭐ 演奏者实时调配基音、低八度与各次泛音的比例——在演奏中「设计音色」这件事，从管风琴的「预先停选」变成了「现场调配」
- ⭐⭐ key click：第三次「缺点变音色」 —— 「那个独特的 key click（按键咔嗒声） 原本是设计缺陷，迅速成为『Hammond 音色』的一部分，现代仿制品努力复现它」→ ⭐⭐ 全站第三次（Ted Nugent 的回授 · 电吉他 key click 的表亲 · 马特诺的键横移），缺陷成为签名几乎是一种规律
- ⭐⭐ Leslie 扬声器：对手变标配 —— 「Don Leslie 设计的扬声器被广泛用于 Hammond——尽管 Leslie 起初是 Hammond 想挤垮的竞争公司」；「Leslie 有旋转的喇叭与带旋转挡板的固定低音扬声器，产生颤音效果」；「电子管功放给 Hammond 音色一种温暖自然的过载——从轻微的『呼噜』到重度咆哮」；⭐⭐ 「很快，Leslie 音箱成了 Hammond 玩家的 de facto 必备」—— 对手变标配，这是乐器史上少见的市场喜剧
- ⭐⭐ 市场史：教堂的低成本替代 → 爵士 organ trio → 摇滚 —— 「最初卖给教堂，作为管风琴的低价替代」；「它很快受到职业爵士乐手欢迎——organ trio（以 Hammond 为中心的小乐队）；爵士俱乐部老板发现 organ trio 比请大乐队便宜」；⭐⭐ Jimmy Smith 的 B-3（附加 harmonic percussion 功能）「激励了一代风琴手」；60–70 年代进入 R&B · 摇滚（尤其前卫摇滚）· 雷鬼；摇滚侧「Keith Emerson 把 Hammond 演奏变成体育竞技，在台上真的动手打乐器；Jon Lord（Deep Purple）把 C-3 接进 Marshall 音箱，咆哮着与吉他竞争」
- ⭐ 「Sunday morning and Saturday night」 —— 「Hammond 是周日早上与周六晚上的声音——福音的狂喜与爵士的老练、摇滚的放纵与灵魂乐的砂砾」；⭐⭐ 一件乐器同时是两个世界的圣咏与炫技（对照特雷门「诡异外星」/马特诺「抒情歌唱」——Hammond 的性格是「热烈」）
- ⭐ B-3（1955）与两个数字：「96 只音轮造出九个谐波，每个由键盘上方拉杆控制」；「B-3：双 61 键手键盘 + 25 键脚踏板」；「拉杆系统是 B-3 的秘密武器——每手九根拉杆实时混合谐波，演奏中现场构建音色：拉出前两根是温暖如笛的爵士音；九根全拉就是尖叫般谐波复杂的摇滚音」
- ⭐ 踏板只有 25 键的理由（实用主义）：「Hammond 用 25 键脚踏板是因为他发现传统 32 键教堂踏板的最上七个音很少被用到」→ ⭐ 把用不到的零件省掉，是工程师的善意（对照管风琴 32 键 AGO 标准只在 Concert 型号上保留）
- ⭐ 转布钢琴线的细节：「Hammond 手键盘与踏板最初用钯合金线制造，保证按键时的高质量电连接——音轮风琴含 3.2–8.4 克钯（依型号）」依专题类资料
- ⭐⭐ 衰亡与复刻：「1975 年放弃音轮转向集成电路，销量下滑，公司 1985 年倒闭」；「Hammond 名字被 Suzuki 收购，转向数字仿真——2002 年『New B-3』用数字技术复刻原版」；⭐⭐ 「clonewheel（克隆轮）乐器——Korg CX3 · Roland VK-7 · Nord Electro——名字本身就是对原版的致敬」；「用现代软件插件仿真音轮 Hammond 的声音是困难的，因为音轮之间的相位关系难以复制」依专题类资料
- 「Hammond 风琴属电机械（electromechanical · 音轮发电而非电子振荡器）——HS 归电鸣之下的机电混合类」依 Hornbostel–Sachs 分类及本页分类讨论
Used for fact-checking only; all prose is original.