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 | 16 | 1 | Envelope | 1024 |
| ب | 2 | 2 | Envelope | 1024 |
| ج | 1 | 3 | Envelope | 768 |
| د | 1 | 4 | Envelope | 1024 |
| ه | 4 | 5 | Envelope | 640 |
| و | 8 | 6 | Envelope | 768 |
| ز | 2 | 7 | Envelope | 896 |
| ح | 1 | 8 | Envelope | 1024 |
| ي | 10 | 10 | Envelope | 640 |
| ك | 8 | 20 | Envelope | 640 |
| ل | 14 | 30 | Envelope | 960 |
| م | 4 | 40 | Envelope | 640 |
| ن | 6 | 50 | Envelope | 800 |
| ع | 5 | 70 | Envelope | 1120 |
| ف | 1 | 80 | Envelope | 640 |
| ص | 1 | 90 | Envelope | 720 |
| ق | 2 | 100 | Carrier | 800 |
| ر | 3 | 200 | Carrier | 800 |
| ش | 1 | 300 | Carrier | 600 |
| ت | 2 | 400 | Carrier | 800 |
| ذ | 1 | 700 | Carrier | 700 |
| ض | 2 | 800 | Carrier | 800 |
| Total abjad value of the verse | 5977 | |||
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.
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.