
Public Speaking and Diction Course
Master the voice you have always had but never fully used. This course takes you from basic breath control and articulation to high-stakes speech delivery, equipping you with the tools to speak with clarity, authority, and impact. Whether you are presenting to a boardroom or addressing a crowd, you will sound like you belong at the front of the room.
What you will learn:
You will build a complete foundation in voice mechanics, covering breath support, resonance, and precise articulation of every American English vowel and consonant. From there, you will develop command of prosody, including stress, intonation, and rhythm, so your speech sounds natural and engaging. You will learn to structure speeches for maximum clarity and deliver them with dynamic vocal variety. The course also covers audience analysis, accent modification, microphone technique, and vocal health. By the end, you will have the skills to perform confidently in any professional speaking situation.
How you study in practice Public Speaking and Diction Course
How you practise Public Speaking and Diction Course
For companies looking to train their teams
With Dedika for businesses, the course includes exercises and examples tailored to your company and its specific needs.
Course content
8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)
Chapter 1HideHide detailsSee detailsFoundations of Voice and Speech
Foundations of Voice and Speech
Lesson 1 • Breath as the Foundation
Teaches diaphragmatic breathing as the engine of vocal power. Connects breath control to volume, stamina, and emotional expression.
Lesson 2 • Self-Assessment and Baseline Recording
Students record and analyze their natural speech to identify strengths and gaps. Creates a personal benchmark for measuring progress.
Lesson 3 • Introduction to Articulation
Introduces precise movement of lips, tongue, and jaw for clear speech. Lays groundwork for diction work in subsequent chapters.
Lesson 4 • Anatomy of the Vocal Instrument
Covers the physical structures that produce speech, from lungs to lips. Establishes anatomical vocabulary used throughout the course.
Lesson 5 • Resonance and Vocal Placement
Explores how sound amplifies through chest, mouth, and head cavities. Students develop awareness of placement to enrich tone quality.
Chapter 2HideHide detailsSee detailsMastering Vowel Sounds
Mastering Vowel Sounds
Lesson 1 • Vowels in Continuous Speech
Applies isolated vowel skills to phrases, sentences, and paragraphs. Ensures accuracy is maintained under real speaking conditions.
Lesson 2 • Pure Vowel Production Drills
Trains consistent, unmodified vowel sounds through targeted repetition. Builds muscle memory for accurate vowel formation.
Lesson 3 • The Vowel System Explained
Maps the full inventory of American English vowels using the vowel quadrilateral. Provides a visual and kinesthetic framework for vowel placement.
Lesson 4 • Vowel Length and Stress Interaction
Explores how stress patterns alter vowel duration and quality. Connects vowel mastery to natural English rhythm.
Lesson 5 • Diphthongs and Vowel Glides
Examines the two-part movement of diphthongs common in American English. Students learn to control glide timing for natural, clear speech.
Chapter 3HideHide detailsSee detailsMastering Consonant Sounds
Mastering Consonant Sounds
Lesson 1 • Consonants in Spontaneous Speech
Transfers consonant accuracy from drills to natural conversation and presentations. Reinforces consistency under cognitive load.
Lesson 2 • Consonant Classification System
Organises consonants by place, manner, and voicing for systematic study. Gives students a logical framework to diagnose and correct errors.
Lesson 3 • Nasals, Liquids, and Glides
Focuses on resonant and approximant consonants that affect speech flow. Corrects common issues like lateral substitution and glide omission.
Lesson 4 • Stops, Fricatives, and Affricates
Drills the most common consonant categories with targeted exercises. Addresses frequent errors such as stopping fricatives or weakening stops.
Lesson 5 • Consonant Clusters and Blends
Trains accurate production of multi-consonant sequences at word boundaries. Reduces cluster reduction and epenthesis errors in professional speech.
Chapter 4HideHide detailsSee detailsProsody: Rhythm, Stress, and Intonation
Prosody: Rhythm, Stress, and Intonation
Lesson 1 • Rhythm and Thought Groups
Teaches chunking speech into meaningful units separated by micro-pauses. Improves listener comprehension and speaker pacing.
Lesson 2 • Rate, Pause, and Silence
Explores how speaking rate and strategic silence affect impact and clarity. Students practise varying rate to match content and audience.
Lesson 3 • Prosody in Prepared Speeches
Applies prosodic skills to scripted and semi-scripted speaking tasks. Students mark scripts for stress, pause, and intonation before delivery.
Lesson 4 • Understanding English Stress Patterns
Explains word-level and sentence-level stress as carriers of meaning. Students learn to identify and produce correct stress placement.
Lesson 5 • Intonation Patterns and Meaning
Maps rising, falling, and fall-rise intonation to communicative functions. Students use intonation to signal questions, lists, and attitude.
Chapter 5HideHide detailsSee detailsVocal Variety and Expressiveness
Vocal Variety and Expressiveness
Lesson 1 • Pitch Range and Flexibility
Trains speakers to access and control their full usable pitch range. Prevents monotone delivery and adds emotional dimension to speech.
Lesson 2 • Volume Dynamics and Projection
Teaches breath-supported projection without strain and deliberate volume shifts. Connects volume control to audience size and emotional intent.
Lesson 3 • Vocal Variety in Storytelling
Applies expressive range to narrative speaking, the most demanding vocal context. Students deliver a short story using full vocal variety.
Lesson 4 • Tone Color and Emotional Resonance
Explores how vocal quality shifts to convey warmth, authority, urgency, or calm. Students practise matching tone to content and context.
Lesson 5 • Combining Variety Elements
Integrates pitch, volume, rate, and tone into cohesive expressive delivery. Prevents overuse of any single element that creates artificiality.
Chapter 6HideHide detailsSee detailsStructuring and Delivering Speeches
Structuring and Delivering Speeches
Lesson 1 • Transitions and Signposting
Trains speakers to guide audiences through speech structure with verbal signposts. Reduces listener confusion and reinforces logical flow.
Lesson 2 • Principles of Speech Organization
Covers the core organisational patterns used in informative and persuasive speeches. Connects structure to audience comprehension and speaker credibility.
Lesson 3 • Notes, Outlines, and Extemporaneous Delivery
Compares manuscript, memorised, and extemporaneous delivery modes. Students practise extemporaneous delivery from keyword outlines.
Lesson 4 • Full Speech Delivery Practice
Students deliver a complete five-minute speech applying all structural and vocal skills. Instructor and peer feedback targets specific improvement areas.
Lesson 5 • Crafting Openings and Closings
Teaches techniques for capturing attention at the start and leaving lasting impressions. Strong openings and closings are the most remembered parts of any speech.
Chapter 7HideHide detailsSee detailsAudience Awareness and Adaptation
Audience Awareness and Adaptation
Lesson 1 • Adapting Language and Complexity
Teaches vocabulary, jargon, and complexity calibration for different audiences. Prevents over-simplification and over-complication errors.
Lesson 2 • Audience Analysis Fundamentals
Introduces demographic, psychographic, and situational audience analysis methods. Connects analysis to content, language, and tone decisions.
Lesson 3 • Interactive and Participatory Delivery
Covers techniques for involving audiences through questions, polls, and activities. Increases engagement and retention in professional settings.
Lesson 4 • Cultural Sensitivity in Communication
Addresses how cultural backgrounds affect communication norms and expectations. Students develop strategies for respectful, effective cross-cultural delivery.
Lesson 5 • Reading Live Audience Signals
Trains speakers to interpret nonverbal cues such as posture, eye contact, and restlessness. Enables real-time adjustments during delivery.
Chapter 8HideHide detailsSee detailsAdvanced Diction and Professional Polish
Advanced Diction and Professional Polish
Lesson 1 • Professional Vocabulary and Phrasing
Develops precise, confident word choice appropriate for formal professional contexts. Eliminates filler words, hedging language, and verbal tics.
Lesson 2 • Connected Speech Phenomena
Examines assimilation, elision, linking, and reduction in natural fluent speech. Students learn when to apply and when to avoid these features for clarity.
Lesson 3 • Accent Modification Principles
Introduces evidence-based strategies for modifying accent features that impede intelligibility. Focuses on intelligibility, not elimination of accent.
Lesson 4 • Precision Under Pressure
Trains maintenance of diction quality during high-stress speaking situations. Addresses the degradation of articulation under adrenaline and time pressure.
Lesson 5 • High-Stakes Speech Performance
Students deliver a polished, high-stakes speech integrating all course skills. Evaluated against professional broadcast and platform speaking standards.
Your valid completion certificate
This course is for you:
Managers: need to lead meetings and town halls with greater authority.
Entrepreneurs: want investor pitches and sales calls to land more persuasively.
Educators: seek to hold learner attention through more expressive vocal delivery.
Career changers: moving into client-facing roles that demand polished spoken presence.
Podcasters: building an audience that returns for the quality of their voice.
Non-native speakers: refining American English diction for high-stakes professional settings.
What our students say
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