Voice Spectrum Analysis (VSA) — created by Jelkal (Angela Hodge). An exploratory instrument for meeting your own voice as pattern and tone: it listens, it measures, it reflects. Every measurement happens on your own device; your voice never leaves your telephone.
Version 1.7 — the current version of Voice Spectrum Analysis: the four tools and the shelf. The story of every version stands in the menu, under THE STORY & THE UPDATES.
Voice Spectrum Analysis (VSA) is an exploratory instrument for meeting your own voice as pattern and tone. It is not a medical device, and it does not diagnose, treat, cure, or prevent any medical condition — it listens, it measures, it reflects.
THE STORY & THE UPDATES
Built October 23, 2026, from the test trials of October 22–23: voice → pattern → voice → words, and voice → tones. All rights belong to Jelkal (Angela Hodge). Version 1.1 — the Colour Room (the octave ladder) added October 23, 2026. Version 1.2 — the dial gains fine steps (−10, −1, +1, +10) and an exact-number box, at Jelah's word the same morning. Version 1.3 — YOUR VOICE IN NOTES: the voice written in musical notation on a staff, the root in gold, at Jelah's word the same morning. Version 1.4 — the dial's note stands on its own staff in section 4, at Jelah's word the same morning (rendering corrected the same morning). Version 1.5 — the live colour bar and live cymatics in section 1: the colour your voice is making as you speak, and the pattern family of its strongest frequency drawn as you talk, at Jelah's word on October 24, 2026. Version 1.6 — the INFORMATION section: the instrument explains itself — spectrum, spectral, spectral signature — at Jelah's word on October 25, 2026. Version 1.7 — the four tools and the shelf: toggle through your voice and the colour, the pattern and the note travel with you; every note on the staff carries its letter; My Records opens a shelf on the device itself; and four standalone tools take their spots — Chladni Plates, Water Membranes, the Pythagorean Monochord under the dial, and Chakra Mapping — at Jelah's word on October 25, 2026.
VSA is not a medical device, and it does not diagnose, treat, cure, or prevent any medical condition.
VOICE SPECTRUM ANALYSIS RECORDS
Every recording this app makes is stored here — every single one, even the accidental ones — inside the app, on this device. Nothing is held hostage: open any take, save it to your device, or send it — today, or three weeks from today. A take you chose also stands on your My Records shelf. What stands in this room cannot be deleted from this room \u2014 the records stand.
PERSONAL IDENTIFICATION分析 MY RECORDS
Your own shelf, on this device. What you save stands here — in the app on your phone and in the web page alike — and your voice never leaves this device to do it. One honest word: this shelf lives in this device’s storage, so clearing your browser’s data clears the shelf. Keep a download of anything precious.
VOICE VISA
VOICE SPECTRUM ANALYSIS
V.S.A.
Put your own voice in. Watch it become its pattern. Hear it returned to you — your voice, clear as day; your tones; and a dial to tune with. A Jelkal work in progress. Your voice never leaves your telephone: every measurement happens right here, on this device.
बेबी स्टेप्स हो गए
Optional — she works fully right here in your browser. The icon just gives her a home on your phone.
To add her: open your browser menu ( ⋯ ) and choose Install app or Add to Home screen. On iPhone: tap Share, then Add to Home Screen.
ⓘ INFORMATION — WHAT YOU'RE LOOKING AT
Voice Spectrum Analysis (VSA) is an exploratory instrument for meeting your own voice as pattern and tone. It is not a medical device, and it does not diagnose, treat, cure, or prevent any medical condition — it listens, it measures, it reflects. Every measurement happens right here, on your own device; your voice never leaves your telephone.
THE WORDS, PLAINLY
Spectrum — a noun. The range itself: a continuum, a band of frequencies, colours, or signals, laid out from low to high. It names the thing being looked at — here, the whole spread of frequencies your voice contains.
Spectral — an adjective. Relating to, or involving, a spectrum — as in spectral analysis, spectral lines, or a spectral fingerprint. It names the way of looking.
Spectral analysis — examining a signal across its frequencies: which frequencies are present, and how strong each one is. In natural science it is used to detect the physical structure and composition of things. Here, it is turned on a voice.
Spectral signature — “the specific reflective properties of a material.” A voice has one: the particular pattern of frequencies that is yours alone. That spectral signature is what this instrument renders — as a wave, as notes on a staff, and as colour.
Image spectrometry — in plain words: a spectrum you can look at. It joins spectral technology to imaging technology, so that every point of a picture carries its own spectrum. The live colour bar and the cymatics drawing in section 1 are this instrument's own way of doing that — your voice, made visible.
Harmonics & Overtones — every sung note contains a fundamental pitch plus a ladder of higher resonant frequencies. These extra harmonics are what give a voice its unique timbre, and cause cymatic shapes to fluidly morph even during a single tone. The ladder is standing in your Evaluation spectrum, if you look: the tall peak is the fundamental, the smaller peaks climbing after it are the harmonics.
WHAT EACH PART SHOWS
Your Voice, In — record or load your voice, and see its wave, its colour as you speak, and the cymatic pattern family of its strongest frequency.
The Evaluation — your voice measured: pitch centre, nearest note, pitch range, strongest frequency, and length — and your voice written in notes on a staff, your root in gold.
Your Voice, Returned — hear your own voice played back clear as day, and hear its tones.
The Frequency Generator — the Dial — a frequency dial you can tune by slider, by fine steps, or by an exact number, and play.
Your Colour — The Octave Ladder — your root frequency doubled up, octave by octave, into the visible band: the colour of your voice.
YOUR VOICE, IN
REC0.0s
No voice yet. Record a few seconds — a verse, your name, anything — or load a voice note.
THE ORIGINAL LINE — AS IT CAME IN, WHILE YOU RECORDED
THE PLAYBACK — YOUR VOICE, MEASURED
0.0stap or drag the wave to move through your voice
THE WAVEFORM ALPHABET Every letter, drawn as the waveform of its spoken name — your wave above, the alphabet's waves below. From Jelah's research shelf.
your colour, livethe colour your voice is making, as you speak
cymaticsthe pattern family of your strongest frequency — drawn live, a drawing, not a photograph of a plate
move through your recording
Drag the wave above, slide here, or tap − / + to step a tenth of a second at a time — your colour and the cymatic pattern move with the exact moment you are standing on.
CHLADNI PLATES — THE PLATE
Chladni Plates — flat metal plates covered with sand or salt that form intricate geometric shapes when a violin bow or frequency generator excites them.
432 Hz
Drag the slider and watch the sand settle into a new figure at every frequency — the shape is the sound, held still.
WATER MEMBRANES — THE WATER
Water Membranes (Tonoscopes/CymaScopes) — using a water surface to capture real-time acoustic ripples, revealing highly fluid and dynamic “CymaGlyphs” from vocal or instrumental harmonics.
432 Hz
The same pattern, alive in water — ripples carrying the figure, never holding still.
Non-Newtonian Fluids — using materials like cornstarch mixed with water over a speaker creates dynamic, three-dimensional moving sculptures that dance to music notes.
The board above draws the pattern family of your strongest frequency. These are its three physical homes: the shape held in sand, the shape alive in water, and the shape that dances.
THE FIRST VOICE — A WORKED EXAMPLE
New here? Start with the voice this house was built on. This is Jelah reading John 1:1 — the canonical take from the test trials of October 22–23, 2026. Press play and hear her say it — then record your own voice above, and watch the instrument do the same for you.
THE EVALUATION
low frequenciesyour voice, frequency by frequency, across timehigh
—pitch centre of your voice
—nearest note
—pitch range
—strongest frequency
—length of your voice
YOUR VOICE IN NOTES
Not only the wave — the music. The notes your voice sang, written on the staff. Your root note stands in gold.
Record your voice above, and your notes will stand here.
0.0sslide to travel through your notes — the note you stand on lights up, and it lights up as your voice plays
your notes, on the pianothe key lights as your voice reaches it — slide above, and the piano and the staff travel together
THE CHROMATIC CIRCLE The twelve tones, and every interval between them, drawn as one web — the map your notes live on. Touch a note and its web lights and sounds; while your recording plays, or you slide through it, the circle follows — the note you stand on, and every line it leads. Drawn by Jelkal from the facts of the twelve tones.And the same circle, standing still — the portrait plate, with the six families beneath it: fifths, whole tones, minor thirds, major thirds, chromatic, tritones. Drawn by Jelkal.
YOUR VOICE, RETURNED
Three reflections of the same voice: itself, its tones, and the dial.
the dial’s note, on the stafflow notes ride the ledger lines below, high notes above — exactly as written music does
Exact:Hz — type it, or step it
Volume
PYTHAGOREAN INTERVALS — THE MONOCHORD
Pythagorean Intervals — classical geometry maps perfectly to musical relationships, such as the exact mathematical ratios found in octaves and perfect fifths.
220 Hz
One string, one movable bridge. Where the bridge stands decides the note — geometry you can hear.
YOUR COLOUR — THE OCTAVE LADDER
Every note climbs by doubling. Double a sound's frequency about forty times and it leaves the ear and enters the eye — sound's highest octaves are colours. Newton divided his rainbow into seven colours to mirror the seven notes of the scale. Here is your voice on that ladder: your root, its octaves, and the colour your root lands on.
The chart above is the reference map (the Hawkins scale, labelled in the chart as a scale of consciousness — a map, not a lab measurement). Your colour below is computed from your own voice by octave arithmetic: your root frequency, doubled into the visible band. A correspondence, drawn honestly — not a diagnosis.
Solfeggio Frequencies — a system of 9 ancient sacred tones (such as 174 Hz, 285 Hz, 432 Hz, and 528 Hz) believed to stimulate specific emotional or biological states.
Schumann Resonances — integrating global electromagnetic frequencies (like the Earth’s baseline 7.83 Hz) with sub-bass audio tones to create grounding, meditative acoustic tracks.
CHAKRA MAPPING — THE BODY
Chakra Mapping — sound healers often map individual musical scales to the human body, such as matching the throat chakra to vocal activation or specific musical pitches (e.g., note A or G) to encourage self-expression.
tap a chakra — or play the ladder
The map as sound healers draw it — seven stations, seven notes, root to crown.
“In the beginning was the Word, and the Word was with God, and the Word was God.” JOHN 1:1 ALL GLORY BE TO GOD
Voice Spectrum Analysis (VSA) is an exploratory instrument for meeting your own voice as pattern and tone. It is not a medical device, and it does not diagnose, treat, cure, or prevent any medical condition — it listens, it measures, it reflects.
