The City
Meccan · 20 verses · Revelation order 35 · Mushaf order 90
بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ
Bismi Allâhi alrraḥmâni alrraḥeemi
لَآ أُقْسِمُ بِهَٰذَا ٱلْبَلَدِ
Lâ oqsimu bihâẕâ albaladi
وَأَنتَ حِلٌّۢ بِهَٰذَا ٱلْبَلَدِ
Waanta ḥillun bihâẕâ albaladi
وَوَالِدٍ وَمَا وَلَدَ
Wawâlidin wamâ walada
لَقَدْ خَلَقْنَا ٱلْإِنسَٰنَ فِى كَبَدٍ
Laqad khalaqnâ alinsâna fee kabadin
أَيَحْسَبُ أَن لَّن يَقْدِرَ عَلَيْهِ أَحَدٌ
Ayaḥsabu an lan yaqdira ʿalayhi aḥadun
يَقُولُ أَهْلَكْتُ مَالًا لُّبَدًا
Yaqoolu ahlaktu mâlan lubadân
أَيَحْسَبُ أَن لَّمْ يَرَهُۥٓ أَحَدٌ
Ayaḥsabu an lam yarahu aḥadun
أَلَمْ نَجْعَل لَّهُۥ عَيْنَيْنِ
Alam najʿal lahu ʿaynayni
وَلِسَانًا وَشَفَتَيْنِ
Walisânan washafatayni
وَهَدَيْنَٰهُ ٱلنَّجْدَيْنِ
Wahadaynâhu alnnajdayni
فَلَا ٱقْتَحَمَ ٱلْعَقَبَةَ
Falâ iqtaḥama alʿaqabata
وَمَآ أَدْرَىٰكَ مَا ٱلْعَقَبَةُ
Wamâ adrâka mâ alʿaqabatu
فَكُّ رَقَبَةٍ
Fakku raqabatin
أَوْ إِطْعَٰمٌ فِى يَوْمٍ ذِى مَسْغَبَةٍ
Aw iṭʿâmun fee yawmin ẕee masghabatin
يَتِيمًا ذَا مَقْرَبَةٍ
Yateeman ẕâ maqrabatin
أَوْ مِسْكِينًا ذَا مَتْرَبَةٍ
Aw miskeenan ẕâ matrabatin
ثُمَّ كَانَ مِنَ ٱلَّذِينَ ءَامَنُوا۟ وَتَوَاصَوْا۟ بِٱلصَّبْرِ وَتَوَاصَوْا۟ بِٱلْمَرْحَمَةِ
Thumma kâna mina allaẕeena âmanoo watawâṣaw bialṣṣabri watawâṣaw bialmarḥamati
أُو۟لَٰٓئِكَ أَصْحَٰبُ ٱلْمَيْمَنَةِ
Olâika aṣḥâbu almaymanati
وَٱلَّذِينَ كَفَرُوا۟ بِـَٔايَٰتِنَا هُمْ أَصْحَٰبُ ٱلْمَشْـَٔمَةِ
Waallaẕeena kafaroo biâyâtinâ hum aṣḥâbu almashamati
عَلَيْهِمْ نَارٌ مُّؤْصَدَةٌۢ
ʿalayhim nârun muṣadatun
Frequency
Sound generated from the letter values (abjad) of the text; independent of recitation.
Bar height = weight (count); position = frequency (logarithmic)
Options
Letter table
| Letter | Count | Hz | Band | Folded Hz |
|---|---|---|---|---|
| ا | 61 | 1 | Envelope | 1024 |
| ب | 20 | 2 | Envelope | 1024 |
| ج | 2 | 3 | Envelope | 768 |
| د | 14 | 4 | Envelope | 1024 |
| ه | 20 | 5 | Envelope | 640 |
| و | 24 | 6 | Envelope | 768 |
| ح | 9 | 8 | Envelope | 1024 |
| ط | 1 | 9 | Envelope | 1152 |
| ي | 25 | 10 | Envelope | 640 |
| ك | 8 | 20 | Envelope | 640 |
| ل | 34 | 30 | Envelope | 960 |
| م | 27 | 40 | Envelope | 640 |
| ن | 24 | 50 | Envelope | 800 |
| س | 7 | 60 | Envelope | 960 |
| ع | 7 | 70 | Envelope | 1120 |
| ف | 6 | 80 | Envelope | 640 |
| ص | 6 | 90 | Envelope | 720 |
| ق | 10 | 100 | Carrier | 800 |
| ر | 10 | 200 | Carrier | 800 |
| ش | 2 | 300 | Carrier | 600 |
| ت | 9 | 400 | Carrier | 800 |
| ث | 1 | 500 | Carrier | 1000 |
| خ | 1 | 600 | Carrier | 600 |
| ذ | 7 | 700 | Carrier | 700 |
| غ | 1 | 1000 | Carrier | 1000 |
| Total abjad value of the verse | 20328 | |||
The total is shown as a number only; it is not part of the sound. The sound comes entirely from the letters.
Measurement charts
Charts fill while sound is playing.
Envelope spectrum — measured, 0.24 Hz resolution
Wave spectrum — measured (1–1200 Hz, logarithmic)
Variation spectrum — periodicities of the letter sequence
Position = period length (letters, logarithmic); height = power. Label: letters/period and its Hz at the chosen k.
How it works
Derived from letter values only, independent of recitation. Below 100 Hz: envelope modulation · 100 Hz and above: carrier tone; in a verse with no letter above 100 Hz the letters themselves carry, octave-folded. Sound is generated live in the browser; no file.
Sequential: in recitation order, each verse's own frequency profile (its carriers and envelope) plays one after another; verse duration is proportional to its letter count and the playing verse is marked in the list.
Flow: the letter sequence as one phase-continuous wave; each letter lasts k full periods of its own frequency (intrinsic duration = Σ 1/value). In the folded mode the per-letter tempo is fixed.
At surah level too the sound comes from letters only; in Sequential mode each verse plays with its own letters, in order.