1 A Brief Overview of the Communication Process

During the 2020 Tokyo Olympics, Simone Biles made the difficult decision to withdraw from several gymnastics events, citing mental health concerns. Leading up to her press conference, Biles was visibly anxious about addressing the media. She reportedly spent time preparing what she wanted to say, knowing that millions around the world would be watching, and that her decision was bound to generate intense scrutiny.

Despite her nerves, she stepped up to speak with the press, carefully choosing her words to explain why she prioritized her mental health and safety over competing. In the conference, Biles expressed that she was dealing with “the twisties,” a dangerous condition in gymnastics where the athlete loses spatial awareness during mid-air maneuvers, which made performing risky.

She admitted feeling nervous about how her withdrawal would be received but emphasized that she needed to put her well-being first. Her tone was candid but restrained, and she repeatedly expressed gratitude toward her coaches, teammates, and fans for their support. Observers noted that she seemed both anxious and resolute, an athlete grappling with enormous pressure yet determined to be honest about her limitations.

This moment became a major talking point across sports media and social platforms, with widespread praise for her honesty and courage. The anxiety she felt before addressing the press was apparent, making it clear that speaking out in such a high-stakes, global moment was emotionally taxing, even for one of the world’s most celebrated athletes.

The Simone Biles press conference illustrates the communication process in action in an era of constant connection. In that moment, she was not only speaking to the journalists physically present in the room. She was also shaping her message for millions of fans watching online, sports commentators, and people across social media who would quickly share and react to what she said.

The situation highlights how communication involves more than syllables and words spoken in a particular order. It also requires considering audiences, context, and how messages may travel far beyond the immediate setting. While most of us will never address the world in the way Biles did, the basic communication process she experienced is similar to what happens in everyday life.

In our own conversations, whether we are talking with friends, participating in class discussions, sending messages online, or giving presentations, we also think about who our audience is, what we want to say, and how our message might be interpreted. The scale may be different, but the underlying process is the same: people create messages, send them through different channels, and others interpret and respond to them.

This chapter introduces the communication process and explains how public speaking fits within it. It begins by defining communication and exploring why it matters. Then it outlines the main components of the communication process, discusses different communication settings and types, and shows how public speaking is one crucial form of communication within this broader system.

Defining Communication

Scholars have proposed many different definitions of communication, often shaped by the metaphors they use to understand the process. Some researchers describe communication through a transmission model, a one-way process similar to how a computer sends information from one point to another. In this view, communication involves a sender who encodes a message, a channel through which the message travels, and a receiver who decodes it. An expansion of this model frames communication as a “transactional,” circular process where individuals can be both senders and receivers. Other scholars approach communication as a ritual process, emphasizing how it helps people create shared meaning, maintain relationships, and reinforce cultural values within a community.

These models identify elements of the communication process that will emerge based on context. At the same time, they reveal that communication is not a fixed or one-dimensional activity, but a dynamic process that shifts depending on multiple factors. Because this book focuses on the practical applications of public speaking, we will not spend much time on this decades-long scholarly debate. Instead, we will provide a working definition of communication for oral communication settings, helping explain how messages are created, shared, and interpreted in speaking situations.

Communication can be understood as a process, much like the weather. Weather is a dynamic system shaped by interacting factors such as temperature, wind, and pressure, constantly shifting over time. Similarly, communication evolves as people send messages, interpret meaning, respond, and adjust. Small changes in communication—like tone, timing, or wording—can lead to very different outcomes, just as slight changes in weather can alter conditions. It is also somewhat unpredictable, influenced by context, relationships, culture, and individual perspectives.

Like weather systems, communication responds to feedback. People read reactions and adapt their messages in real time. However, unlike the weather, communication involves conscious choice, allowing people to reflect, clarify misunderstandings, and improve interactions. Viewing communication this way highlights it as an ongoing process shaped by many factors, while still allowing room for intentional control and improvement.

For the purposes of studying public speaking, we need a definition that is comprehensive and practical. We will define communication as a process through which individuals or groups create and exchange messages in order to share ideas, emotions, and meaning.

This process involves several interconnected elements. A sender develops a message and encodes it into words, gestures, or other symbols. The message travels through a channel, such as spoken language, visual media, or digital platforms, to a receiver, who decodes and interprets it. As the receiver responds, they provide feedback, which helps shape how the message is understood and how the interaction continues. At the same time, communication can be influenced by noise, anything that interferes with how a message is sent, received, or interpreted.

In the section that follows, we will examine each part of the communication process to see how they work together and how they shape effective public speaking:

• • The Sender
    • This is the person (or group) who initiates the communication process by creating a message they want to share. The sender begins with an idea, thought, or feeling and works to express it in a way that others can understand. You might act as the sender when giving a toast at a wedding, explaining a project to a teammate, or texting a friend about plans. In each case, you are starting the communication by developing a message and preparing to share it with others. In the earlier example, Simone Biles served as the sender as she responded to questions and shared her perspective during the press conference.

• • The Receiver
    • This is the person (or group) for whom the message is intended. They interpret the message, but their understanding is shaped by their own experiences, assumptions, and emotions. During Simone Biles’s press conference, the immediate receivers were the journalists, while millions of fans, commentators, and social media users also received her message. Effective communicators consider the receiver’s perspective to make their message as clear and meaningful as possible.

• • The Message
    • This is the idea, feeling, or information you want to share with others. It can be a fact, an opinion, a request, or an emotion, basically anything you want the receiver to understand. In Biles’s situation, it was the announcement that she was withdrawing from the competition. Messages can be clear, like a job offer in an email, or subtle, like a raised eyebrow during a conversation. They can be spoken, written, shared through images or memes, or even expressed through silence. What matters is that the sender is conveying something for the receiver to interpret and respond.

• • Encoding and Decoding
    • Encoding is the step where the sender turns an idea into a form that someone else can understand. This means translating thoughts into words, tone, gestures, or other symbols. During Simone Biles’s press conference, she encoded her thoughts into clear statements and careful body language, shaping her message so it could be understood by journalists, fans, and social media audiences. She had to choose her words and tone carefully to convey her meaning while managing public perception.
    • Decoding is the process the receiver uses to interpret the message, and it is not always perfect. Different audiences—journalists, commentators, or fans online—might interpret the same statement in slightly different ways. This shows why clarity, context, and tone are so important in communication.

• • . The Channel
    • This is the “how” of your message, the medium you use to deliver it. Different channels affect how a message is received. Face-to-face conversations allow for tone, expression, and body language. Texts are quick but can be misunderstood, while social media can reach millions but often loses nuance. Choosing the right channel can make a big difference in how your message is interpreted. In Simone Biles’s press conference, her channel included spoken words, gestures, and facial expressions in front of journalists, as well as the broader media (e.g., cameras) and social platforms that carried her message to fans worldwide.

• • Feedback
    • This is the response that shows the sender how their message was received. It can be obvious, like someone saying, “I don’t get it,” or subtle, like a puzzled look. Feedback turns one-way communication into an interaction. In public speaking, audience reactions like nodding, clapping, yawning, or even checking their phones are all forms of feedback. During Simone Biles’s press conference, the journalists’ questions, expressions, and follow-ups, as well as fan reactions on social media, provided immediate and extended feedback. Paying attention to these signals helps the sender adjust messages in real time.

• • Noise
    • This is anything that interferes with a message being clearly sent, received, or understood. It is not just loud sounds. Noise can include a bad internet connection during a virtual meeting, a cultural misunderstanding, or even your own stress that makes it hard to focus. Internal noise comes from distractions, fatigue, or strong emotions, while external noise includes interruptions, misread tones, or competing messages. During Simone Biles’s press conference, noise could have included background questions, misinterpretations by journalists, social media speculation, or Biles’s own public speaking anxiety.

Box 1.1 Case Study: The Mars Climate Orbiter Disaster (1999) and the Role of Noise in Communication

What Happened:

In 1999, NASA launched a $125 million spacecraft called the Mars Climate Orbiter. Its mission was to study the Martian atmosphere and relay information back to Earth. Two main teams were involved: NASA’s Jet Propulsion Laboratory (JPL), which handled the spacecraft’s navigation, and Lockheed Martin, a contractor responsible for building parts of the system and providing certain calculations.

Here’s where things went wrong.

Lockheed Martin sent navigation data to NASA’s JPL using imperial units (like pounds and feet), while JPL was expecting that data to be in metric units (like newtons and meters). Both sides just assumed the other was on the same page and no one caught the mismatch.

The Result:

When the Mars Climate Orbiter arrived at Mars, it entered the atmosphere way too low, about 57 kilometers instead of the intended 140 kilometers. At that altitude, the spacecraft burned up or skipped off into space. We’ll never know for sure, because all contact was lost immediately.

NASA later admitted that this major failure came down to a simple miscommunication but one that had catastrophic consequences.

How This Shows “Noise” in Communication:

In communication, “noise” doesn’t just mean literal distracting sound. It’s anything that disrupts or confuses the message between sender and receiver. In this case:

• Technical Noise: Different measurement systems (imperial vs. metric) weren’t clearly defined or confirmed.
• Semantic Noise: Both teams interpreted the data differently because they assumed shared understanding that wasn’t there.
• Organizational Noise: There was no system in place to double-check and clarify critical data being transferred between teams.

Key Takeaways:

1. Never assume shared understanding. Even among experts, people interpret messages differently. Always clarify details, especially things like units, deadlines, or expectations.
2. Noise isn’t always obvious. Miscommunication can range from people talking over each other to email wording, data formats, or unclear terminology.
3. Double-check critical information. One quick verification or question, “Are these numbers in metric or imperial?,” could have saved $125 million and a major mission.

Communication Across Different Settings

Not all communication looks or feels the same. Different situations call for different styles, formats, and approaches, and each setting brings its own challenges and opportunities. In this section, we’ll explore the main types of communication you’re likely to encounter in everyday life, from casual chats to formal presentations, and see how they connect to one another within the broader communication process.

1. Interpersonal Communication—Interpersonal communication happens between two people. This includes casual conversations with a friend, one-on-one check-ins with a supervisor, or texting a roommate about chores. It’s usually informal, and it allows for immediate feedback and clarification.
2. Group Communication—This refers to interactions within small groups, typically with a shared purpose or task. Think group projects, team meetings, or planning committees. Group communication requires balancing speaking and listening, navigating dynamics, and often persuading or collaborating with others.
3. Mass Communication—Mass communication is about sending messages to large, often unseen audiences through media channels. Think TV, radio, newspapers, podcasts, YouTube, Instagram, and TikTok.
4. Digital Communication—This includes texts, emails, social media posts, video calls, and any other tech-based interactions. It’s fast, convenient, and everywhere, but it also creates new challenges, such as increased uncertainty and even confusion.
5. Public Speaking—This is what most people think of when they hear “communication” in a formal sense: speaking to an audience, large or small. It could be a classroom presentation, a speech at a community event, or a TED-style talk. Public speaking is structured, intentional, and usually one-way (at least initially). Because there’s less opportunity for back-and-forth, clarity and preparation matter even more.

A clear understanding of these forms of communication helps situate public speaking within the broader range of communicative practices. Rather than standing apart, public speaking draws on the same underlying processes found in other forms, particularly the need to convey meaning in ways that an audience can interpret and respond to.

Public Speaking as Connection

At its core, public speaking is distinguished not by the mere delivery of information from one person to a group of people, but by its orientation toward an audience capable of interpreting and responding to that message. Unlike one-way informational displays such as street signage or a digital ad, public speaking requires attention to context, audience interpretation, and the conditions under which meaning is constructed in real time. This makes the speaker’s task less about “transmitting” content and more about managing how that content is received and understood.

In practice, this means that public speaking depends on integrating verbal and nonverbal cues and on the speaker’s ability to adapt those cues in response to audience feedback. Laughter, yawns, gasps, and verbal affirmations all constitute forms of real-time audience feedback. It is up to the speaker to recognize this engagement and either reinforce or adjust their message accordingly. If you look closely, this type of interaction encompasses most, if not all, elements of the communication process. This is why understanding communication as a process rather than a one-way act clarifies that effectiveness in public speaking is not determined solely by what is said, but also by how meaning is shaped through interaction. This is especially true when we consider how verbal and nonverbal communication interact during a speech.

• Verbal communication includes your message, organization, word choice, tone, and delivery (what you say and how you say it). Are your ideas clear and easy to follow? Is your language appropriate for your audience?
• Nonverbal communication includes body language, eye contact, posture, gestures, facial expressions, and vocal elements like pacing and pauses. Do you look poised and confident or timid and unenthusiastic? These cues often carry as much weight as your words. When they don’t align with your message, your credibility can suffer.

This book develops both dimensions of communication in tandem, focusing on how ideas are structured, how vocal delivery can be used effectively, and how speakers present themselves in ways that support credibility and clarity. It also emphasizes audience analysis as a foundational skill for adapting messages to specific contexts. While mastery develops over time through sustained practice, the goal is to provide a practical framework for organizing ideas and communicating them with increasing confidence and control.

As you have seen, communication cannot be reduced to a simple transaction, like buying gum at a gas station. Its elements come to life when the goal is genuine connection, and public speaking is no exception.

Quick Summary

The communication process explains how meaning is created and shared between people through a series of interconnected elements. It begins with a sender who develops an idea and encodes it into a message using language, symbols, and structure. That message is then delivered through a channel, such as spoken words, visual aids, or digital media. The audience, or receiver, decodes the message based on their own experiences, beliefs, and expectations.

Throughout this process, feedback allows the speaker to gauge understanding and adjust in real time. Noise—both internal and external—can interfere with how the message is sent, received, or interpreted. Public speaking fits within this process as a deliberate, structured form of communication designed for larger audiences. It requires speakers to carefully organize ideas, anticipate audience reactions, and adapt their delivery to maintain clarity and engagement. Unlike one-way communication, effective public speaking emphasizes interaction, even in formal settings, through feedback and audience awareness.

1. Shannon, C. E. A (1948). Mathematical Theory of Communication. Bell System Technical Journal, vol. 27, pp. 379-423 and 623-656, July and October, 1948.
2. Carey, J.W. (2008). Communication as Culture, Revised Edition: Essays on Media and Society (2nd ed.). Routledge. https://doi.org/10.4324/9780203928912
3. Schramm, W. (1997). The beginnings of communication study in America. Thousand Oaks, CA: Sage.