The Persian santur

Four strings per course, eighteen movable bridges — an instrument built for changing mode

Related

SanturCimbalomYangqin (hammered dulcimer)The qanunThe oudThe neyTanbur

⭐⭐ The main line: an instrument built for changing mode

「Modulating between maqams on the Santur is difficult and requires completely retuning the strings; therefore, professional musicians often use several different Santurs during concerts, each pre-tuned to a specific maqam.」

The easiest thing to miss about the santur is this: it is not one instrument, it is a set of them.

⭐⭐ Players bring several santurs to the platform, each tuned in advance to one maqam —— ⭐⭐ because changing mode on the santur is not something the hands do; it is something the instrument has to be re-tuned for: the strings are re-tuned and the bridges re-placed.

⭐⭐ The only instrument on the site whose mode change costs you a new instrument:

⭐⭐ Four instruments, one maqam system, four completely different answers —— ⭐⭐ the freedom to modulate depends on where the variable element has been put: on the fingertip, on a lever, on a spare pipe, or simply on bringing a second instrument.

⭐⭐ The bridges are the mechanism

⭐⭐ The Persian santur carries two sets of nine bridges (kharak), eighteen in all, dividing the strings into three positions. ⭐⭐ Four strings tuned in unison cross each bridge —— and that string is cut by the bridges into three segments, each a note of its own.

⭐⭐ The exact reverse of the site's intuition that one string means one note: seventy-two strings yield twenty-five distinct pitches. (Against the harp: forty-seven strings give six and a half octaves, one pitch per string plus pedals; ⭐⭐ two opposite bargains — the santur takes few and precise, the harp many and complete.)

⭐⭐ The bridges slide —— moving one changes the speaking length of the string, and so changes its pitch. ⭐⭐ This is the site's 「changing geometry」 route to tuning (tension · geometry · mass): the oud's geometry lives under a fingertip, the qanun's under a brass strip, ⭐⭐ the santur's under a small wooden bridge.

⭐ Form: a trapezoidal flat box (walnut or maple · about 90 cm wide × 35 cm deep × 8 cm high) · two sets of nine movable sheep-shaped bridges kharak · seventy-two strings in eighteen courses of four · ⭐⭐ brass or copper for the bass half on the right, steel for the treble half on the left (silk before the 20th century) · two sound holes · three positions of nine pitches (E♭3–F4 · E♭4–F5 · E♭5–F6), twenty-seven positions in all, ⭐⭐ with the top F counted twice, twenty-five distinct pitches.

⭐⭐ Copper on the right, steel on the left — two metals, two colours of sound —— and it is plainly audible: the bass has a dull, thick, brassy ring, the treble a clear steel voice.

⭐⭐ The microtones are fixed at tuning time, not at playing time

⭐⭐ Quarter tones on the santur are obtained by moving a bridge: koron below, sori above. ⭐⭐ And the rule is — 「the note G can either be natural, sharp, flat, koron or sori for a given register」: ⭐⭐ one note name, one form, within a register.

⭐⭐ That is the root reason a mode change means retuning: in one register G can only be one of the five, and another maqam may need another form. ⭐⭐ A string on the santur does not hold a pitch found by pressing; it holds a pitch found by placement —— ⭐⭐ the site's third shape of 「intonation is a position, not a scale」: the oud's position is under a fingertip, the qanun's under a brass strip, ⭐⭐ the santur's under a wooden bridge.

⭐⭐ A rule found nowhere else: because a note name can take only one form within a register, the santur cannot play most Western classical repertoire —— ⭐⭐ a limit in an instrument's tuning draws the boundary of the music it can play (against the auto-tune, whose algorithm precedes its effect · the qanun, designed as a theoretical object —— ⭐⭐ the santur is an instrument constrained by its modes).

⭐⭐ The name: it is already written in the Book of Daniel

⭐⭐ 「the Biblical Aramaic form psantērīn is found in the Book of Daniel 3:5」 —— ⭐⭐ an instrument's name entering scripture: the oldest case on the site of a name being written into a text.

⭐⭐ There are two accounts of the etymology: Persian sanṭīr, related to the Greek ψαλτήριον (psalterion); and another reading that splits it into Persian san + tur, meaning 「a hundred strings」 —— ⭐⭐ while it actually carries seventy-two (⭐⭐ the number in the name does not match the number in the instrument — against the site's naming series, where a name sticks to the most typical shape a thing ever had).

⭐⭐ The ancestor's image: the oldest depictions are on the carvings of Babylon (1600–911 BCE) and Neo-Assyria (911–612 BCE), ⭐⭐ with the instrument hung from the player's neck. ⭐⭐ Habib Hasan Touma holds that the Babylonian santur is the common ancestor of the harp, the yangqin, the harpsichord, the qanun, the cimbalom and the hammered dulcimers —— ⭐⭐ 「strings lying flat and struck」 matters far more than how many strings there are (against the site's master axis: what classifies an instrument is how it is made to speak).

⭐⭐ Playing: two feather-light hammers, and a habit of damping

⭐ The hammers are called mezrab: oval, thin, as light as a feather, 「held between the thumb, index, and middle fingers」; ⭐⭐ the string is damped at once by a finger or the palm after each strike —— ⭐⭐ an undamped santur buzzes, so damping is a necessary action, not a flourish.

⭐⭐ Glissandi are made by sweeping a hammer across adjacent strings.

⭐⭐ Melody in one hand, accompaniment in the other: the right hand carries the line, the left the rhythm and harmony. ⭐⭐ The technique of riz — tremolo — comes from the setar: both hands strike the same string rapidly in alternation to stretch out a note; ⭐⭐ and octave doubles are always played as an alternating trill, never together —— ⭐⭐ the most conspicuous texture in Persian santur playing.

⭐⭐ Players: Abolhasan Saba (1902–1957, whose radif version is the most widely played) · Faramarz Payvar · Hossein Malek · Mohammed Heydari · Parviz Meshkatian (1955–2009) · ⭐⭐ Ardavan Kamkar — 「the inventor of the contemporary Santur」 —— the man who freed the instrument out of its tremolo mould and gave it polyphony and two independent hands; ⭐⭐ Pashang Kamkar then became the founder of its pedagogy (*The Method of Playing the Santur*).

⭐⭐ The twelve dastgahs: the modal system of Persian classical music comprises seven principal dastgahs and five avaz, ⭐⭐ and the whole repertory is called the radif —— ⭐⭐ a body of music handed down through the santur and its sister instruments.

⭐⭐ Three descendants, each changing the one thing that mattered most to it

⭐⭐ One instrument, three lines of descent: ⭐⭐ the Iraqi line changed 「the number of strings and the look of the bridges」 · the Indian line changed 「the shape and the technique」 · the European line changed 「the whole mechanism」 —— ⭐⭐ three directions of divergence: more strings · different form · added machinery (against the site's 「variants after export»: the oud added frets and became the lute).

⭐⭐ The cimbalom is the end of that line: ⭐⭐ legs, pedals and full chromaticism — solving in one stroke the trouble of 「carrying a second instrument to change mode」 that the santur lives with. ⭐⭐ The clearest case on the site of machinery doing a human job: the santur solves modulation by moving instruments, the cimbalom solves it with pedals.

HS class

Lineage and destinations

The Persian santur's compass is not produced by the number of its strings but by its eighteen movable bridges: two sets of nine bridges divide the strings into three positions of nine pitches each — the bass register E♭3–F4, the middle register E♭4–F5 and the upper register E♭5–F6 — twenty-seven positions in all, with the top F counted twice, leaving twenty-five distinct pitches. ⭐⭐ That number is worth setting beside another: the site's instinct that one string means one note holds on the harp, where forty-seven strings give six and a half octaves on one pitch per string plus pedals; the santur is the exact reverse — seventy-two strings give twenty-five notes. ⭐⭐ The reason lies in the construction: four strings tuned in unison cross each bridge, and the bridge cuts that string into three segments, each a note of its own. ⭐⭐ Pitch can therefore be fine-adjusted: pushing a bridge left shortens the speaking length of the string and pushing it right lengthens it, which makes the quarter tones — koron below, sori above — available positions. ⭐⭐ That freedom has a hard edge, though: within one register a given note name can only take one form, so G is either natural, sharp, flat, koron or sori, one of the five. ⭐⭐ That is precisely why changing mode means retuning the strings and why players carry several pre-tuned instruments to the concert. ⭐⭐ There is one asymmetry of timbre as well: the bass half on the right is strung with brass or copper and the treble half on the left with steel, so the low register carries a duller brassy ring and the high a clear steel voice — on one instrument, material and register are kept apart. ⭐⭐ In practice the working register sits around the middle (E4–F5), and the real difficulty was never whether the instrument could reach high enough, but that every change of mode means laying out all eighteen bridges again.

Sources

• ⭐⭐ 波斯桑图尔史（Wikiwand Santouri + Wikipedia Santur + Rice 大学硕士论文《When Persian Traditional Music meets Western Violin Tradition》+ liraacademy 桑图尔条目 + 伊拉克桑图尔说明）——⭐⭐ 主线：它是一把为「换调」而生的琴——「Modulating between maqams on the Santur is difficult and requires completely retuning the strings; therefore, professional musicians often use several different Santurs during concerts, each pre-tuned to a specific maqam.」⭐⭐ 全站唯一一件「换调必须换琴」的乐器：乌德琴换调靠手在无品板上挪位置（琴不变）· 卡农琴换调靠扳键（琴不变）· 奈伊笛换调靠换一支笛（乐器是七支一套）——⭐⭐ 桑图尔是第四种：连弦带桥一起重调，所以干脆带好几把琴上台。⭐⭐ 桥才是这件乐器的机关：波斯桑图尔有两组各九个桥（kharak），共十八座，把弦分成三个位置；每座桥上横过四根同音弦，弦被桥切成三段、每段一个音——⭐⭐ 全站「一根弦一个音」这条直觉的彻底反面：72 根弦只给出 25 个独立音（对照竖琴 47 根弦给六个半八度，靠的是一根一音加踏板——两种完全不同的取舍）。⭐⭐ 桥可以推：移动桥就改变弦的有效长度，也就改变音高——这是全站「调音只有三种物理动作（改张力·改几何·改质量）」里「改几何」这条路的典型，而乌德琴的「改几何」在人手指上、卡农琴的在铜片上、桑图尔的在木桥上。⭐⭐ 微分音是调音时定死的，不是演奏时：与乌德琴（人手现场定位）· 卡农琴（mandal 实时轻压）· 奈伊笛（口型与吹奏角度）都不同，⭐⭐ 桑图尔的四分音靠移动琴桥取得——「koron」向下微调、「sori」向上微调；⭐⭐ 而「the note G can either be natural, sharp, flat, koron or sori for a given register」——同一个音名在一个八度里只能有一种形态，⭐⭐ 这就是「换调要重调弦」的根本原因，也是它必须带好几把琴的原因。⭐⭐ 形制：梯形扁箱（胡桃木 / 枫木 · 约 90cm 宽 × 35cm 深 × 8cm 高）· 两组各九个可移动的羊形小桥 kharak · 72 根弦（18 组，每组 4 根同音） · 右半低音区用黄铜或铜弦、左半高音区用钢弦（20 世纪前用丝弦）· 两个音窗 · 三个位置各九音（低音 E♭3–F4 · 中音 E♭4–F5 · 高音 E♭5–F6），共 27 个音位，最高的 F 重复一次，实际 25 个独立音。⭐⭐ 槌叫 mezrab：椭圆薄片、羽状轻，「held between the thumb, index, and middle fingers」；击弦后立刻用手指或掌心止音（制造断奏）；扫弦（glissando） 用槌横掠相邻弦。⭐⭐ 一手旋律一手伴奏：右手主旋律、左手节奏与和声；「the technique of riz」（颤音）与塞塔琴同源——双手交替快速敲同一根弦把音延续；⭐⭐ 八度的双音永远交替成颤音、从不同时响（这是波斯桑图尔最醒目的织体习惯）。⭐⭐ 名字：来自波斯语 sanṭīr，与希腊 ψαλτήριον (psalterion) 相关，「the Biblical Aramaic form psantērīn is found in the Book of Daniel 3:5」——⭐⭐ 《但以理书》里已经写着这个音（全站最古老的一次「乐器的名字进入圣经」）。⭐⭐ 祖先：浮雕上最古的形象见巴比伦（公元前 1600–911）与新亚述（公元前 911–612），琴挂在演奏者颈上；Habib Hasan Touma 认为巴比伦桑图尔是竖琴、扬琴、羽管键琴、卡农琴、钦巴龙与击弦扬琴的共同祖先。⭐⭐ 三种下游：伊拉克桑图尔（92 根钢或青铜弦 · 23 组四弦同音 · 桥叫 dama，「像国际象棋的兵」）· 印度 santoor（直接借自波斯，更宽更矩形更多弦，槌的握法与奏法都不同，Pandit Shivkumar Sharma 一系把它带进北印度斯坦尼音乐）· 东欧钦巴龙（更大、全半音化、有腿有踏板，1874 年 Schunda 在布达佩斯定型）——⭐⭐ 一件乐器分出三条血脉，每一条都改了自己身上最要紧的那一件东西（对照全站「出口后的变种」：乌德琴加品格 → 鲁特琴 · 班卓琴绕地球回非洲）。⭐⭐ 一条别处没有的规矩：传统桑图尔一个八度里同一个音名只能取一种形态，所以它演不了大部分西方古典作品——⭐⭐ 「一件乐器的音律限制，反过来划定了它能演的音乐的边界」（对照 auto-tune 的算法先于效果 · 卡农琴被设计成理论器物 —— 桑图尔是被调式限制住的乐器）。⭐ 演奏家：Abolhasan Saba（1902–1957，其 radif 版本最流行）· Faramarz Payvar · Hossein Malek · Mohammed Heydari · Parviz Meshkatian（1955–2009）· Ardavan Kamkar（「the inventor of the contemporary Santur」，把手从颤音里解放出来、引入复音）· Pashang Kamkar（教学法奠基人）。⭐⭐ 十二个大斯塔哈（dastgah）与 radif：波斯古典音乐的调式体系由七个主 dastgah 与五个 avaz 组成，曲目总集称 radif。
• ⭐⭐ 对照线 ——santur（中国八音族的板箱击弦条目）：⭐⭐ 同一件乐器的两个视角：那一条讲「形制与家族」（梯形扁箱 · 十八组弦 · 两组九个桥 · 击弦家族的谱系与出口），这一条讲「它为什么必须带好几把琴上台」；cimbalom（钦巴龙）：⭐⭐ 同族最彻底的一次工程化——加腿、加踏板、加到全半音，把桑图尔「搬琴换调」的麻烦一次解决掉（⭐⭐ 全站最清楚的一次「机械如何替人干活」：桑图尔用搬琴解决换调，钦巴龙用踏板解决换调）；yangqin（扬琴）：⭐⭐ 中国八音族里的近亲——同为击弦板箱，但中国的扬琴改的是「琴竹」（竹制琴竹 · 铜弦 · 更宽音域），桑图尔改的是「琴桥」（可移动 kharak），⭐⭐ 一个改击弦工具，一个改定音机构——同一族的两条分工；qanun（卡农琴）：⭐⭐ 同样服务马卡姆，但取微分音的路径相反——卡农琴用铜片杠杆实时轻压弦身，桑图尔用木桥在调音时改弦长（⭐⭐ 卡农琴在演奏中改音高，桑图尔在演奏前改音高）；oud（乌德琴）：⭐⭐ 同一套马卡姆音阶的三种解法之第一——人手现场找位置；ney（奈伊笛）：⭐⭐ 第三种解法——口型与吹奏角度；⭐⭐ 桑图尔是「第四种」：换一把琴；tanbur（弹布尔）：⭐⭐ 同为波斯—中亚世界的乐器，却是「弦鸣 · 拨弦」——⭐⭐ 同一个地理文化圈里，一件击弦一件拨弦，凑成一条完整的对照线。
• ⭐ 制作注记 —— 条目写作日期 2026-10-21；inst 站世界乐器子类条目；SVG ×2 中英各一；range 两版逐字相同；实例取 chinafolk C3 参照

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