Voice Reference

Voice Reference

A comprehensive vocal direction lexicon compiled from professional acting glossaries and voice-over direction databases, combined with empirical findings from Qwen3-TTS VoiceDesign testing.

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Part 1: Director's Vocal Lexicon

Hundreds of industry-standard terms for fine-tuning vocal performance, organized by function.

I. Texture, Timbre & Quality (The "Instrument")

The physical sound or "grain" of the voice. Use these in description for VoiceDesign.

Category	Descriptors
Rough/Gritty	Gravelly, Raspy, Husky, Scratchy, Smoky, Guttural, Coarse, Croaking, Grating, Dry, Cracked, Fractured, Sandpaper, Whiskey-soaked, Growling, Gruff, Hoarse, Ragged, Raw, Rusty, Strained, Throaty
Smooth/Rich	Silky, Velvety, Honeyed, Creamy, Liquid, Orotund, Dulcet, Mellifluous, Polished, Lush, Mellow, Buttery, Soothing, Fluid, Flowing, Seamless, Satiny, Suave, Unctuous
Resonance	Booming, Chesty, Full-bodied, Deep, Sonorous, Thundering, Rumbling, Hollow, Echoing, Cavernous, Round, Heavy, Grounded, Bassy, Resonant, Bell-like
Light/High	Airy, Breathy, Feathery, Thin, Reedy, Tinny, Piercing, Shrill, Piping, Wispy, Fluting, Chirpy, Squeaky, Falsetto, Head-voice, Boyish, Girlish, Metallic, Brittle
Nasal/Sharp	Nasal, Twangy, Whiny, Pinched, Brass, Strident, Cutting, Piercing, Biting, Sharp, Acidic, Astringent, Clamorous, Ear-splitting, Harsh, Jarring, Penetrating, Stingy
Vocal Defects	Fry (Vocal Fry), Sibilant (whistling 'S'), Plosive (popping 'P'), Tremulous (shaking), Wobbling, Quavering, Warbling, Slurred, Mumbled, Incoherent, Thick

II. Emotion, Attitude & Tone (The "Subtext")

Adjectives to dial in psychological state. Use these in instruct, not description.

Category	Descriptors
Aggressive/Hostile	Acerbic, Antagonistic, Belligerent, Biting, Brusque, Caustic, Combative, Confrontational, Contemptuous, Cutting, Derisive, Dictatorial, Disdainful, Dogmatic, Domineering, Explosive, Fierce, Hard, Imperious, Incendiary, Indignant, Intimidating, Malevolent, Militant, Pugnacious, Savage, Scornful, Seething, Sharp, Spiteful, Stern, Threatening, Truculent, Vengeful, Venomous, Vitriolic, Warlike
Sad/Depressed	Bereft, Bleak, Broken, Crestfallen, Dejected, Desolate, Despondent, Disheartened, Dismal, Doleful, Dour, Forlorn, Gloomy, Grief-stricken, Heartbroken, Heavy-hearted, Hollow, Hopeless, Lachrymose, Melancholy, Miserable, Morose, Mournful, Pathetic, Pessimistic, Plaintive, Regretful, Remorseful, Resigned, Somber, Sorrowful, Tearful, Tragic, Weepy, Wistful, Woe-begone
Happy/Positive	Blissful, Buoyant, Celebratory, Cheerful, Chipper, Contented, Delightful, Ebullient, Ecstatic, Elated, Encouraging, Energetic, Enthusiastic, Euphoric, Exhilarated, Exuberant, Festive, Genial, Giddy, Gleeful, Gratified, Hearty, Hopeful, Jaunty, Jolly, Jovial, Joyous, Jubilant, Lighthearted, Merry, Optimistic, Overjoyed, Peppy, Radiant, Rapturous, Reassured, Sunny, Upbeat, Vibrant, Vivacious, Zestful
Fearful/Anxious	Agitated, Alarmed, Apprehensive, Cautious, Concerned, Cowardly, Distressed, Edgy, Faint, Frightened, Guarded, Hesitant, Hysterical, Insecure, Jittery, Nervous, Panic-stricken, Paralyzed, Paranoid, Petrified, Quaking, Restless, Scared, Shaky, Skittish, Spooked, Startled, Tense, Terrified, Timid, Trembling, Uneasy, Unsettled, Wary, Worried
Calm/Neutral	Ambivalent, Apathetic, Balanced, Bland, Blasé, Bored, Casual, Collected, Composed, Cool, Detached, Dispassionate, Dull, Easygoing, Equable, Even-tempered, Flat, Imperturbable, Indifferent, Laid-back, Listless, Matter-of-fact, Measured, Mediocre, Mild, Moderate, Monotone, Nonchalant, Objective, Pacifistic, Passive, Peaceful, Phlegmatic, Placid, Relaxed, Serene, Steady, Stoic, Tranquil, Unemotional, Unflappable
Affectionate/Intimate	Adoring, Amorous, Caring, Cherishing, Comforting, Compassionate, Coquettish, Cuddly, Doting, Endearing, Fond, Gentle, Intimate, Loving, Maternal, Nurturing, Paternal, Protective, Romantic, Seductive, Sensual, Soft, Sultry, Sweet, Sympathetic, Tender, Touching, Warm, Yearning
Intellectual/Superior	Analytical, Arrogant, Authoritative, Condescending, Critical, Cynical, Didactic, Dignified, Dry, Educated, Erudite, Haughty, Informative, Inquisitive, Instructional, Knowledgeable, Lofty, Logical, Patronizing, Pedantic, Philosophical, Pompous, Practical, Pragmatic, Precise, Pretentious, Professional, Rational, Sagacious, Sarcastic, Sardonic, Satirical, Scholarly, Skeptical, Smart, Snobbish, Sophisticated, Supercilious, Superior, Thoughtful, Wise, Wry
Playful/Quirky	Bantering, Cheeky, Childish, Clownish, Droll, Eccentric, Facetious, Fanciful, Flippant, Flirty, Foolish, Goofy, Humorous, Impish, Ironic, Irreverent, Jocular, Kooky, Mischievous, Mocking, Offbeat, Playful, Prankish, Quirky, Rascally, Ridiculous, Sassy, Saucy, Silly, Snarky, Teasing, Tongue-in-cheek, Whimsical, Witty, Zany

III. Delivery, Pacing & Rhythm (The "Mechanics")

Speed, flow, and clarity controls. Use these in instruct, not description.

Style	Description
Staccato	Short, detached, punchy, clipped, abrupt, machine-gun style
Legato	Smooth, connected, flowing, gliding, continuous, elongated vowels
Rapid-fire	Blistering speed, urgent, manic, auctioneer-style, frantic, breathless
Measured	Deliberate, slow, thoughtful, spacing out every word, ponderous
Halting	Uncertain, pausing frequently, stammering, disjointed, stumbling
Lilting	Rhythmic rise and fall, musical, singsong, melodic, bouncing
Drawl	Lazily extended vowels, slow, relaxed, languid, stretching words
Punchy	High energy emphasis on key words, dynamic, hitting the consonants hard
Deadpan	Zero inflection, flat pitch, dry comedy, poker-faced delivery
Cadenced	Highly rhythmic, almost poetic or Shakespearean, metered

IV. Industry Specs & Archetypes (The "Role")

Shorthand used in casting breakdowns and commercial scripts.

Archetype	Description
Authentic	Real person, non-actor, documentary style, raw, unpolished
Announcer (Classic)	"Voice of God" (VOG), presentational, booming, polished, radio DJ
Announcer (Non-Announcery)	Anti-sell, conversational, throwing it away, indifferent
Conversational	Just talking to a friend, informal, slurred edges, natural breaths
Girl/Guy Next Door	Relatable, friendly, middle-class, trustworthy, average, safe
Trusted Advisor	Doctor, lawyer, parent, financial planner, knowledgeable, calm
Cool Parent	Modern, hip, not strict, understanding, "Disney Mom/Dad"
The Millennial/Gen Z	Vocal fry, uptalk, casual, cynical, tech-savvy, fast, ironic
Promo Voice	Gritty, deep, growly, intense, whispering, high-drama, movie trailer
Corporate/Industrial	Clear, articulate, professional, neutral, informative, confident
Hard Sell	High volume, high energy, urgent, shouting, "Car Dealer," aggressive
Soft Sell	Intimate, whispery, luxury, expensive, comforting, seductive
Characters	Villain, Hero, Sidekick, Creature, Monster, Robot, Alien, Witch, Old Crone, Sage

V. Technical Session Commands (The "Workflow")

Instructions for the recording process.

Command	Meaning
A-B-C (Three-in-a-row)	Read the same line three times with three different attitudes
Billboard	Emphasize a specific name or product ("Hit the brand name harder")
Button	A clean, definitive end to the sentence/take; sticking the landing
Clean Up	Re-doing a line to fix a mouth noise or stumble
Cold Read	Reading the script immediately without rehearsal
Color	Add more emotion or personality to a specific word
Compression	Reduce dynamic range (louder in quiet parts, softer in loud parts)
Donut	Voice at beginning and end, hole in the middle for music/clips
Eat the Mic	Very close to microphone for proximity effect (deep/intimate bass)
Guide Track	Matching timing of a pre-recorded audio/video reference
Lay Out	Pause or stop speaking for a section
Lead-in	A sentence said silently to get into character before the first line
Level	Reading at performance volume to set microphone gain
Lift	Brighten or raise pitch slightly, often at end of a spot
Pick-up	Recording just one specific sentence or phrase
Popping	Excessive air on "P"/"B" sounds (fix: "Turn slightly off-axis")
Projection	Throwing the voice to the back of the room vs. keeping it internal
Punch-in	Recording a small snippet to insert into an existing take
Safety	One last take in case the previous good one had a technical glitch
Slate	Stating name and take number before performing ("John Doe, Take 1")
Smile	Physically smile while reading (changes tone to brighter/warmer)
Sotto Voce	A stage whisper; speaking under one's breath
Throw Away	De-emphasize a line; make it sound unimportant or casual
Time	Speeding up or slowing down to hit a strict duration (e.g. exactly 29.5s)
Wild Line	A line recorded separately from script flow (shouts, laughs, grunts)
Walla	Background crowd noise/murmuring performed by a group

VI. Extended Dimensions Reference

150+ additional professional terms across five key areas.

Dimensions (Physicality & Atmosphere)

Dimension	Terms
Presence	Close-mic, Distant, Intimate, Expansive, Internalized, Projection
Texture	Silky, Velvety, Honeyed, Mellifluous, Buttery, Creamy, Lush, Liquid, Orotund, Resonant
Grit	Gravelly, Raspy, Smoky, Husky, Guttural, Scratchy, Coarse, Croaking, Grating, Dry, Cracked, Sandpaper, Whiskey-soaked, Growling, Gruff, Hoarse, Ragged, Raw, Rusty, Strained, Throaty
Brightness/Weight	Airy, Breathy, Feathery, Thin, Reedy, Tinny, Piercing, Shrill, Piping, Wispy, Fluting, Chirpy, Squeaky, Metallic, Brittle
Temperature	Warm, Sunny, Nurturing, Genial, Toast-like, Cool, Detached, Clinical, Crisp, Distant, Icy, Steel

Emotions (Psychological Intent)

Category	Terms
High Energy/Positive	Jubilant, Exuberant, Ebullient, Cheerful, Playful, Whimsical, Contented, Blissful, Optimistic, Encouraging, Radiant, Rapturous, Peppy, Jaunty, Jolly, Jovial
High Energy/Negative	Indignant, Seething, Acerbic, Strident, Sharp, Biting, Vitriolic, Threatening, Savage, Belligerent, Antagonistic, Caustic, Combative, Confrontational, Contemptuous, Derisive
Low Energy/Negative	Melancholy, Despondent, Wistful, Morose, Tearful, Heavy-hearted, Hollow, Defeated, Grief-stricken, Bereft, Bleak, Broken, Crestfallen, Dejected, Desolate, Disheartened, Dismal, Doleful, Dour, Forlorn
Vulnerability	Jittery, Tremulous, Quavering, Shaky, Hysterical, Panic-stricken, Hesitant, Guarded, Tense, Agitated, Alarmed, Apprehensive, Faint, Frightened, Skittish, Uneasy
Authority/Power	Commanding, Imperious, Dictatorial, Regal, Stately, Assertive, Dogmatic, Unyielding, Matter-of-fact, Dignified, Pompous, Supercilious, Sagacious
Irony/Wit	Sarcastic, Ironic, Wry, Cynical, Sardonic, Satirical, Facetious, Flippant, Sassy, Saucy, Cheeky, Bantering, Droll

Pitch & Musicality (The Melody)

Aspect	Terms
Range	Bass-heavy, Mid-range, High-frequency, Falsetto, Head-voice, Chest-voice
Movement	Uptalk (rising pitch, uncertainty), Down-talk (dropping pitch, finality/authority), Singsong (nursery-rhyme rise and fall), Flat/Monotone (zero variation), Modulated (controlled varied pitch)
Register	Vocal Fry (creaky), Nasal, Twangy, Resonance, Vibrato, Tremolo

Delivery & Mechanics (Pacing & Clarity)

Aspect	Terms
Tempo	Staccato (clipped), Legato (flowing), Rapid-fire, Measured, Deliberate, Halting, Drawling, Languid, Ponderous
Articulation	Crisp, Glassy, Over-enunciated, Slurred, Lazy, Mumbled, Thick, Sibilant (hissing 'S'), Plosive (popping 'P'/'B')
Emphasis	Billboard (punching a key word), Throwaway (de-emphasizing), Punchy (high-energy consonants)
Rhythm	Cadenced, Syncopated, Naturalistic, Flowing, Breathless, Erratic

Specs & Archetypes (Character Models)

Category	Archetypes
Commercial	Hard-sell, Soft-sell, Everyman/Everywoman, Girl/Boy Next Door, Hip/Gen-Z, Millennial, Sophisticated/Luxury
Narrative	The Trusted Advisor, The Sage/Professor, The Villain/Antagonist, The Sidekick, The Reluctant Hero
Technical/Industry	"Announcery" (classic radio), "Voice of God" (deep/booming/omniscient), "Corporate/Industrial" (polished/professional), "Sotto Voce" (stage whisper), "Walla" (background crowd noise)

VII. Vocal Classifications

Standard register terminology used in the "Lead with register" rule (#1 in Working Rules below). These classifications define the pitch range and tonal character of a voice.

Standard Vocal Classifications

Voice Type	Gender	Range (Approx.)	Description
Soprano	Female	C4 -- C6	The highest female voice, known for a bright and soaring quality.
Mezzo-Soprano	Female	A3 -- A5	The middle-range female voice, with a darker and richer tone than a soprano.
Contralto	Female	F3 -- F5	The lowest female voice. Very rare, with a deep, powerful resonance.
Countertenor	Male	E3 -- E5	The highest male voice, often singing in a range similar to a contralto or mezzo-soprano using falsetto.
Tenor	Male	C3 -- C5	The highest "natural" male voice type, frequently assigned heroic or lead roles in opera.
Baritone	Male	A2 -- A4	The most common male voice type, sitting between tenor and bass with a warm, versatile tone.
Bass	Male	E2 -- E4	The lowest male voice, providing a deep, heavy foundation for vocal ensembles.

Specialized & Additional Classifications

Voice Type	Description
Alto	In choral music, "alto" refers to the lower female part (SATB), usually sung by mezzo-sopranos or contraltos.
Bass-Baritone	A male voice that combines the low resonance of a bass with the higher range of a baritone.
Treble	The high, unchanged voices of children (both boys and girls).
Sopranista	A rare male singer who can sing in the soprano range without using falsetto.

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Part 2: Qwen3-TTS VoiceDesign Experimental Findings

Empirical results from testing how the VoiceDesign model interprets voice description prompts. Maps the professional lexicon above to actual model behavior.

Methodology

• All tests use the same 4 neutral sentences across all voices
• instruct field left empty to isolate voice description effects
• seed: -1 (random) to test natural consistency
• Evaluated on: voice consistency across lines, adherence to description, quality

Round 1: Strategy Comparison

Tested 5 fundamentally different description approaches (M/F each, 40 samples total).

Strategies Tested

Strategy	Approach	Example
Anatomy	Physical/acoustic traits	"A deep male baritone with resonant chest voice, smooth timbre, slight vocal fry"
Persona	Character identity	"A kind elderly grandfather who speaks with patience and gentle authority"
Technical	Audio engineering terms	"A well-projected male voice with crisp diction, moderate pace, controlled dynamic range"
Emotion	Emotional qualities only	"A calm, reassuring male voice that sounds confident, trustworthy, and steady"
Context	Scene/situation	"A male narrator reading a fantasy novel aloud in a quiet bookshop"

Results

Strategy	Consistency	Key Observation
Anatomy	Best (M), Poor (F)	Physical descriptions give the model concrete acoustic targets. Female "light soprano, airy" pushed too high/thin.
Persona	Variable	Works when archetype strongly implies a vocal type (young journalist -> fast squeaky). Fails when ambiguous (grandfather -> gender switching).
Technical	Low-Medium	Model partially understands audio engineering terms but not reliably.
Emotion	Low	Too abstract. No physical anchor for what "calm" or "warm" sounds like.
Context	None	Different voice every line. Model treats description as scene direction, not voice identity.

Round 1 Conclusion

Anatomy-first descriptions win. The model needs concrete acoustic targets (pitch, register, timbre, texture) to produce consistent voices. Abstract qualities (emotion, persona, context) give too much interpretive freedom.

Round 2: Anatomy-First Hybrid

All descriptions reformulated: register + timbre + tonal adjectives. No delivery/performance words (those belong in instruct).

Formula

[register] + [timbre/texture descriptors] + [tonal character adjectives]

Never include: delivery verbs (speaking, reading), pacing words, scene/context

Results

Voice	Description	Consistency	Quality	Notes
WARM_BARITONE	"deep male baritone, rich chest resonance, warm smooth timbre, hint of gravelly texture"	Med-High	High	Voice as described, very good deep quality, some variation
GROUNDED_ALTO	"female alto, full grounded mid-range, slightly husky, natural warmth"	Med-High	High	Follows description well, less variable than baritone
BRIGHT_TENOR	"male tenor, bright clear tone, light nasal resonance, youthful energy"	Very Low	High	Wild emotional delivery, "unhinged" quality — see Bright Tenor Investigation
SILKY_MEZZO	"female mezzo-soprano, silky even tone, soft rounded edges, gentle clarity"	Very High	Very High	Best overall. Extremely easy to listen to.
COMMANDING_BASS	"male bass, dark authoritative rumble, heavy low-end, firm tone"	High	High	Cowboy/western gruff quality. A keeper.
CRISP_SOPRANO	"female soprano, precise crystalline tone, balanced brightness, confident projection"	Very High	High	More tonal range but still consistent. Studio-quality feel.

Consistency Drivers (from Section I terms)

High consistency — terms the model locks onto reliably:

• Smoothness/evenness: silky, even, soft, rounded (from Smooth/Rich)
• Precision: precise, crystalline, balanced (implies control)
• Authority/firmness: dark, authoritative, firm, commanding (from Resonance)
• Grounding: grounded, full, husky (from Rough/Gritty + Resonance)

High variability — terms that destabilize:

• Energy: bright, youthful energy (from Brightness/Weight — see investigation below)
• Ambiguous warmth alone: warm, deep without anchoring texture

Observation: Female voices trend more consistent than male across all descriptions.

Bright Tenor Investigation

Isolated the cause of BRIGHT_TENOR instability through systematic ablation (8 variants, 32 samples).

Test Matrix

Variant	Description	What Changed
CONTROL	"male tenor, bright clear tone, light nasal resonance, youthful energy"	Original — baseline
NO_BRIGHT	"male tenor, clear tone, light nasal resonance, youthful energy"	Removed "bright"
NO_ENERGY	"male tenor, bright clear tone, light nasal resonance"	Removed "youthful energy"
NEITHER	"male tenor, clear tone, light nasal resonance"	Removed both
BRIGHT_ONLY	"A bright male tenor voice"	Minimal — just "bright"
SHARP_REPLACE	"male tenor, sharp forward-placed tone, light nasal resonance, crisp articulation"	Replaced "bright" with "sharp"
HIGH_HARMONICS	"male tenor, strong upper harmonics, clear forward projection, light nasal resonance"	Technical acoustic equivalent
STABILIZED	"male tenor, steady clean tone, light nasal resonance, even delivery"	Applied consistency formula

Results

Variant	Consistency	Character	Finding
CONTROL	Very Low	Unhinged, wild emotional swings	Confirms R2 behavior
NO_BRIGHT	Medium	Expressive but text-guided, less unhinged	"Bright" contributes emotional volatility
NO_ENERGY	Medium	Similar to NO_BRIGHT, one auctioneer pacing spike on dramatic text	"Energy" contributes pacing bursts
NEITHER	High	Follows text cues, stable	Bare tenor base is inherently stable
BRIGHT_ONLY	High	Stable, text-responsive	"Bright" alone is fine
SHARP_REPLACE	High	Annoyed/irritable quality	"Sharp/forward-placed" maps to irritated tone
HIGH_HARMONICS	Medium	Raised voice, near-shouting, very clear	Useful niche: alertness/wake-up effect
STABILIZED	High	Narrator-like, low emotion	Consistency formula works but flattens expression

Key Finding: Interaction Effect

"Bright" and "youthful energy" are each stable alone but interact destructively. The combination gives the model contradictory signals — tonal brightness (acoustic) + behavioral energy (performance) — and it flails between interpretations on every generation.

This is likely a general principle: mixing acoustic descriptors (Section I) with behavioral/energy descriptors (Section III) in the voice description creates ambiguity. Keep voice descriptions purely in Section I territory; use instruct for Section II-IV qualities.

Term-Specific Mappings

Term	Section	Model Interpretation	Usefulness
bright (alone)	I. Brightness/Weight	Stable tonal brightness	Good in isolation
bright + energy terms	I + III	Emotional chaos	Avoid combination
sharp	I. Nasal/Sharp	Annoyed/irritable tone	Use carefully
upper harmonics	I. (technical)	Raised volume, near-shout	Niche: alertness effect
steady, even	I. Smooth/Rich	Narrator-like stability	Flattens expression
silky, rounded	I. Smooth/Rich	High consistency + listenability	Best for narration
dark, authoritative	I. Resonance	Gruff/western quality, consistent	Good for male authority
crystalline, precise	I. Smooth/Rich	Consistent with expressive range	Best balance
hollow (in instruct)	I. Resonance	Whisper/sigh hybrid, breathy emptiness	Avoid in instruct — model reads it as acoustic, not emotional. Use "defeated" instead.

Working Rules for Voice Description Prompts

1. Lead with register (bass, baritone, tenor, alto, mezzo-soprano, soprano)
2. Add 2-3 texture/timbre terms from Section I only
3. Never mix acoustic (Section I) and behavioral (Section II-IV) descriptors in the description field
4. Use instruct for delivery, emotion, and pacing — that's what it's for
5. Prefer "control" terms (silky, even, precise, firm) over "energy" terms (bright, sharp, piercing) for consistency
6. Over-specifying with ambiguous terms compounds uncertainty — minimal clear descriptions can outperform detailed ambiguous ones
7. Female voices are inherently more consistent in this model across all description styles