# Shannon Weaver Model of Communication - 7 Key Concepts (2022) (2023)

The Shannon and Weaver Model of Communication is a mathematical theory of communication that argues that human communication can be broken down into 6 key concepts: sender, encoder, channel, noise, decoder, and receiver.

A later version of the theory by Norbert Weiner added a 7th concept (‘feedback’) which changed the model from a linear to cyclical model.

It is known as the “mother of all models” because of its wide popularity. The model is also known as ‘information theory’ or the ‘Shannon theory’ because Claude Shannon was the main person who developed the theory.

The model’s primary value is in explaining how messages are lost and distorted in the process of communication.

## Definition of the Shannon and Weaver Model

The Shannon and Weaver model is a linear model of communication that provides a framework for analyzing how messages are sent and received.

It is best known for its ability to explain how messages can be mixed up and misinterpreted in the process between sending and receiving the message.

Shannon, in his famous article titled “A Mathematical Theory of Communication” where he outlined the theory, explained what the goal of his model was:

“The fundamental problem of communication is that of reproducing a message sent from one point, either exactly or approximately, to another point” (Shannon, 1948, p. 379).

Using this mathematical theory of communication, he hoped to more effectively identify those pressure points where communication is distorted.

Related Models of Communication:

• The Westley and Maclean Model
• The Lasswell Model
• Dance’s Helical Model
• Agenda Setting Theory

## Background

The Shannon Weaver model was first proposed in the 1948 article “A Mathematical Theory of Communication” in the Bell System Technical Journal by Claude Shannon and Warren Weaver:

• Shannon and Weaver were both from the United States.
• Claude Shannon was a mathematician.
• Warren Weaver was an electrical engineer.
• Many believe this mathematical theory of communication was mainly developed by Claude Shannon alone and Warren Weaver had a minimal role. It is often simply called the ‘Shannon information theory’ in science disciplines.
• Shannon developed the theory to improve understanding of communication via telephone and eventually improve the quality of phones.
• It was later used as a general theory of communications.

## Explanation of the Shannon and Weaver Model

The Shannon Weaver model mathematical theory of communication follows the concept of communication in a linear fashion from sender to receiver with the following steps:

### 1. Sender (Information Source)

The Shannon Weaver model starts with the sender or “information source”. They are the person (or object, or thing – any information source) who has the information to begin with. The information source starts the process by choosing a message to send, someone to send the message to, and a channel through which to send the message.

(Video) Transmission Model of Communication: Shannon and Weaver

A sender can send a message in multiple different ways: it may be orally (through spoken word), in writing, through body language, music, etc.

Example: An example of a sender might be the person reading a newscast on the nightly news. They will choose what to say and how to say it before the newscast begins.

### 2. Encoder (Transmitter)

The next step in the Shannon Weaver model is the ‘encoder’. The encoder is the machine (or person) that converts the idea into signals that can be sent from the sender to the receiver. The Shannon model was designed originally to explain communication through means such as telephone and computers which encode our words using codes like binary digits or radio waves.

However, the encoder can also be a person that turns an idea into spoken words, written words, or sign language to communicate an idea to someone.

Examples: The encoder might be a telephone, which converts our voice into binary 1s and 0s to be sent down the telephone lines (the channel). Another encode might be a radio station, which converts voice into waves to be sent via radio to someone.

### 3. Channel

The next step in the Shannon Weaver model is the ‘channel’. The channel of communication is the infrastructure that gets information from the sender and transmitter through to the decoder and receiver. We sometimes also call this the ‘medium’.

Examples: A person sending an email is using the world wide web (internet) as a medium. A person talking on a landline phone is using cables and electrical wires as their channel.

If we’re face-to-face, perhaps we don’t have a channel, except the sound waves from our voice that carry the sound from the sender’s mouth to the receiver’s ear.

### 4. Noise

The next step in the Shannon Weaver model is ‘noise’. Noise interrupts a message while it’s on the way from the sender to the receiver. It’s named after the idea that ‘noise’ could interrupt our understanding of a message. There are two types of noise: internal and external.

Internal noise happens when a sender makes a mistake encoding a message or a receiver makes a mistake decoding the message. Here’s the two points where it can happen:

• At the point of encoding (for example, when you misspell a word in a text message);
• At the point of decoding (for example, when someone misinterprets a sentence when reading an email)

External noise happens when something external (not in the control of sender or receiver) impedes the message. So, external noise happens:

• At the point of transmission through the channel (for example, when we’re having a conversation by a busy highway and the receiver is having trouble hearing over the sound of cars)

One of the key goals for people who use this theory is to identify the causes of noise and try to minimize them to improve the quality of the message.

Examples: Examples of external noise may include the crackling of a poorly tuned radio, a lost letter in the post, an interruption in a television broadcast, or a failed internet connection.

Examples of internal noise may include someone having a headache so they can’t concentrate, someone speaking with a heavy accent, or when the sender mumbles when speaking.

### 5. Decoder

The next step in the Shannon Weaver model is ‘decoder’. Decoding is the exact opposite of encoding. Shannon and Weaver made this model in reference to communication that happens through devices like telephones. So, in this model, there usually needs to be a device that decodes a message from binary digits or waves back into a format that can be understood by the receiver.

If we’re talking about direct communication between people without the use of technology, there may still be a need for decoding. For example, you might need to decode a secret message, turn written words into something that makes sense in your mind by reading them out loud, or you may need to interpret (decode) the meaning behind a picture that was sent to you.

Examples: Decoders can include computers that turn binary packets of 1s and 0s into pixels on a screen that make words, a telephone that turns signals such as digits or waves back into sounds, and cell phones that also turn bits of data into readable (and listenable) messages.

(Video) Shannon-Weaver's Communication Model Explained

The next step in the Shannon Weaver model is ‘receiver’ The receiver is the end-point of the original Shannon and Weaver model of the technical communication process. This is the step where the person finally gets the message, or what’s left of it after accounting for noise.

Examples: Examples of a receiver might be: the person on the other end of a telephone, the person reading an email you sent them, an automated payments system online that has received credit card details for payment, etc.

### 7. Feedback

The final step in the Shannon Weaver model is ‘feedback’. Actually, the ‘feedback’ step was not originally proposed by Shannon and Weaver in 1948. Norbert Weiner came up with the feedback step in response to criticism of the linear nature of the approach. (‘Linear’ means that the messages are only going one way).

Feedback occurs when the receiver of the message responds to the sender in order to close the communication loop. They might respond to let the sender know they got the message or to show the sender:

• Whether they got the message clearly without noise
• How well they understand the message

Nonetheless, the ‘feedback’ elements seems like a post-hoc add-on to the model, and is the subject of a lot of criticism (see later in this article on ‘disadvantages of the model’ for details).

Examples: Feedback does not occur in all situations. Sometimes, like when watching TV, we don’t tend to let the people talking on the TV know what we’re thinking … we simply watch the show.

Some times when feedback will occur include:

• During a chat between friends
• When you write a reply email
• Through your facial expressions and body language during a conversation
• Etc.

## Examples of the Shannon Weaver Model of Communication

The Shannon-Weaver model of communication was originally proposed for technical communication, such as through telephone communications. Nonetheless, it has been widely used in multiple different areas of human communication.

Here are some examples of how the Shannon Weaver model works:

### a) A telephone conversation

Sender: The sender is the person who has made the call, and wants to tell the person at the other end of the phone call something important.

Encoder: The telephone turns the person’s voice into a series of binary data packages that can be sent down the telephone lines.

Channel: The channel is the telephone wires itself.

Noise: Noise may occur if the speaker mumbles, the telephone wires are interrupted in a storm, or the telephone encoders/decoders are malfunctioning.

Decoder: The telephone that the receiver is holding will turn the binary data packages it receives back into sounds that replicate the voice of the sender.

Feedback: The receiver may speak in response, to let the sender know what they heard or understood.

### b) Listening to the radio

Sender: The radio host will speak into her microphone.

(Video) Shannon Weaver model of Communication in urdu by Jaweria

Encoder: The microphone and its computer will turn the voice of the radio host into binary packets of data that are sent to the radio transmitter. The radio transmitter, also part of the encoder, will turn that data into radio waves ready to be transmitted.

Channel: The channel will be the radio waves that are sent out by the radio transmitter.

Noise: Noise is most likely to occur if the receiver’s transistor radio is not tuned to the correct frequency, causing static, or if the receiver’s transistor radio is too far away from the radio transmitter.

Decoder: The decoder is the receiver’s transistor radio, which will turn the radio waves back into voice.

Receiver: The receiver is the person listening to the radio, who will hopefully receiver the full message loud and clear if noise has been avoided or minimized.

Feedback: Feedback is difficult in this step. However, the radio channel may send out researchers into the field to interview listeners to see how effective their communication has been.

### c) A face-to-face discussion

Here’s another example of how the Shannon and Weaver model of communication might work for human communication:

Sender: The person starting the conversation will say something to start the communication process.

Encoder: The ‘encoder’ step is usually used to explain a machine that encodes a message for transmission. For a face-to-face discussion, you could consider the ‘encoding’ to be the ways the sender turns their idea into intelligible words and sentences.

Channel: There isn’t any wire or radio waves involved here – instead, the sound is transmitted through sound waves made by the voice.

Noise: The sender may have mumbled or have an accent that caused the message to be distorted (internal noise). There might be a wind or traffic that made the message hard to hear (external noise).

Decoder: While there’s no machine here, the listener still has to turn the words they hear into a legible message in their mind.

Receiver: The receiver is the second person in the conversation, who the sender is talking to.

Feedback: Face-to-face communication involves lots of feedback, as each person takes turns to talk. If someone’s message is not heard to to noise, they can ask for clarification easily.

The Shannon and Weaver model of communication has many pros and cons. Here are a few:

### 1. It explains the barriers to effective communication very well

The Shannon Weaver information theory was revolutionary because it explains the concept of ‘noise’ in detail. It shows how information is interrupted and helps people identify areas for improvement in communication.

For example, the model also includes three ‘levels’ where communication can be interrupted. These are: technical problems, semantic problems, and effectiveness problems:

(Video) Theory and Model of Business Communication l Part 2 l Shannon and Weaver Model of Communication 💯📝📙

• Technical problems: when the decoder, encoder or channel causes the problems. For example, when a machine important for the communication of the message has a fault.
• Semantic problems: This is when the message that was sent is different from the message that was received (a practical way to think about this is the game ‘Telephone’, also known as ‘Chinese whispers’ or ‘telephono roto’. The message is lost somewhere in the retelling.).
• Effectiveness problems: This explains how well the message can cause a response or reaction from the receiver.

2. It breaks down communication into understandable parts

The model enables us to look at the critical steps in the communication of information from the beginning to end.

3. Transferable to multiple situations

The communication model was originally made for explaining communication through technological devices. However, it’s been used to explain just about any form of communication you can think of.

### 1. It’s a Linear Model / There’s insufficient regard for Feedback

The original 1948 Shannon Weaver blueprint did not contain the ‘feedback’ component. When it was added by Weaver later on, it was included as a bit of an afterthought.

Thus, it lacks the complexity of truly cyclical models such as the Osgood-Schramm model.

2. It doesn’t account for power relationships

The model doesn’t take a social scientific look at how information is interpreted differently based on power relationships or identities of those people communicating with one another.

3. It doesn’t address one-to-many communication

The ‘mother of all models’ is silent on the issues that arise when there is one sender and multiple receivers. For a better analysis of mass communication, use a model like the Lasswell model of communication.

Related: List of Mass Communication Theories

## Conclusion

The Shannon Weaver model of communication is the ‘mother of all models’ of human communication. It is also known as the ‘information theory’. It is a mathematical theory considered to be a ‘linear’ communication model. Created be Claude Shannon and Warren Weaver, it is considered to be a highly effective communication model that explained the whole communication process from information source to information receiver.

## Sources

Al-Fedaghi, S. (2012). A conceptual foundation for the Shannon-Weaver model of communication. International Journal of Soft Computing, 7(1): 12 – 19.

Al-Fedaghi, S. (2012). Codeless Communication and the Shannon-Weaver Model of communication. International Conference on Software and Computer Applications.

Griffin, E. M. (2006). A first look at communication theory. London: McGraw-Hill.

Littlejohn, S. W., & Foss, K. A. (2009).Encyclopedia of communication theory (Vol. 1). London: Sage.

Shannon, C. (1948). A Mathematical Theory of Communication. The Bell System Technical Journal, 27(1): 379-423. (you can access this article for free here)

(Video) SHANNON WEAVER MODEL OF COMMUNICATION

Shannon, C. E. & Warren Weaver. (1963). The Mathematical Theory of Communication. Illinois: University of Illinois Press.

Verdü, S. (2000). Fifty Years of Shannon Theory. In: Verdü, S & McLaughlin, S. W. (Eds.). Information Theory: 50 Years of Discovery. (pp. 13-34). New York: IEEE Press.

## FAQs

### What are the 7 key concepts of the Shannon Weaver model? ›

The Shannon and Weaver Model of Communication is a mathematical theory of communication that argues that human communication can be broken down into 6 key concepts: sender, encoder, channel, noise, decoder, and receiver.

What is Shannon Weaver model example? ›

An example of the Shannon-Weaver model is a telephone call. Here, a person who makes the call is the sender and uses a telephone as the encoder to turn the message into a form which can be relayed through wires.

How does Shannon Weaver model of communication work? ›

Explanation of Shannon Weaver Model

The sender encodes the message and sends it to the receiver through a technological channel like telephone and telegraph. The sender converts the message into codes understandable to the machine. The message is sent in codes through a medium.

What are the 5 elements in the Shannon Weaver model of communication? ›

Shannon and Weaver's original model contains five elements: information source, transmitter, channel, receiver, and destination. The information source is where the information is stored. In order to send the information, the message is encoded into signals, so it can travel to its destination.

What is the basic concept used to emphasize in Schramm model of communication? ›

According to the Schramm's model, coding and decoding are the two essential processes of an effective communication. He also emphasizes that the communication is incomplete unless and until the sender receives a feedback from the recipient.

Which communication model is most effective? ›

The best known communication models are the transmitter-receiver model according to Shannon & Weaver, the 4-ear model according to Schulz von Thun and the iceberg model according to Watzlawick.

Why is the Shannon Weaver model noted as the mother of all communication models? ›

Shannon and Weaver's model is considered as an advanced model than other communication models due to the importance it attaches to the feedback mechanism which lacks in most of the other communication models.

When did Shannon and Weaver model of communication form? ›

The most well-known and influential formal model of communication, developed in 1949 by Claude Shannon and Warren Weaver (see communication models).

What makes effective communication? ›

Effective communication is the process of exchanging ideas, thoughts, opinions, knowledge, and data so that the message is received and understood with clarity and purpose. When we communicate effectively, both the sender and receiver feel satisfied.

What are the models of communication explain it? ›

The three models of communication we will discuss are the transmission, interaction, and transaction models. Although these models of communication differ, they contain some common elements.

### What model of communication claims that the most important part is the setting where the listener is situated? ›

ARISTOTLE'S MODEL (5BC)

According to this model, the receiver plays the key role to whether or not the communication takes place. it is a one-way process because there is no concept of feedback. Even though Aristotle centered on the speaker and the message, the setting is more important where the listener is situated.

What were your ideas about the importance of models of communication? ›

A model of communication gives a wholesome understanding of a system or structure by which people can understand similar systems or structure. Communication models help identify and understand the components and relationship of the communication process being studied.

What are the basic elements formed in Schramm model of communication why he used those elements as representations in his model of communication? ›

Elements of the Schramm model of communication include Encoder or Sender, Decoder or Receiver, Interpreter, and message. This model states that communication is a two-way highway, which means that information passes between the sender and receiver.

What are the 7 models of communication? ›

#1 The sender-receiver model: a basic communication framework
• Verbal communication: language or the spoken and written word.
• Paraverbal communication: vocal qualities and tone, such as intonation, volume, and pace.
• Non-verbal communication: gestures, facial expressions, posture, or movement across the room.
Feb 1, 2021

Which model of communication best describes how communication works? ›

The transmission model of communication describes communication as a linear, one-way process in which a sender intentionally transmits a message to a receiver (Ellis & McClintock, 1990). This model focuses on the sender and message within a communication encounter.

What is the importance of learning how do you communicate effectively essay? ›

Proper communication can help you to solve a number of issues and resolve problems. This is the reason that one must know how to communicate well. The skills of communication essential to be developed so that you are able to interact with people. And able to share your thoughts and reach out to them.

What are some examples of interactive model of communication in real life situation? ›

Human-computer interaction is also now considered as interactive communication as the model is circular where the senders interchange every time. Social media, interactive marketing and user generated contents, ATM machines, online shopping, chat rooms, etc are other examples of interactive communication model.

What communication model focuses mainly on speaker and speech? ›

Aristotle Model is mainly focused on speaker and speech. It can be broadly divided into 5 primary elements: Speaker, Speech, Occasion, Audience and Effect.

Who is the mother of all communication? ›

The Shannon–Weaver model of communication has been called the "mother of all models." Social Scientists use the term to refer to an integrated model of the concepts of information source, message, transmitter, signal, channel, noise, receiver, information destination, probability of error, encoding, decoding, ...

What are the two main channels in Shannon Weaver's communication model? ›

Shannon – Weaver Model Example: 1

RFI is created from an internal wireless system. The news presenter is the information source, radio is the channel, Jon is the receiver, and radio frequency interference is also known as electrical noise.

### Who created Shannon-Weaver model? ›

The first model of the communication process was developed by Claude Shannon and Warren Weaver. The aim was to enable engineers from the Bell Telephone Company to transmit mechanical messages more effectively.

Why communication is important in life? ›

Good communication skills can improve the way that you operate through life, smoothing your way in your relationships with others. Poor communication skills, on the other hand, can sour relationships from business to personal, and make your life significantly harder.

Why is communication skills important? ›

The Importance of Communication Skills

Good communication skills are essential to allow others and yourself to understand information more accurately and quickly. In contrast, poor communication skills lead to frequent misunderstandings and frustration.

Why is it important to have effective communication? ›

When communication is effective, it leaves all parties involved satisfied and feeling accomplished. By delivering messages clearly, there is no room for misunderstanding or alteration of messages, which decreases the potential for conflict.

What is an example of Schramm model? ›

For example, an art professor will not be able to explain past participle tense to a group of second standard students. Elements of the Schramm model of communication include Encoder or Sender, Decoder or Receiver, Interpreter, and message.

What are the 3 models of communication? ›

The three models of communication we will discuss are the transmission, interaction, and transaction models. Although these models of communication differ, they contain some common elements.

What is the sixth element a dysfunctional factor in Shannon and Weaver's transmission model? ›

A sixth element, noise is a dysfunctional factor: any interference with the message travelling along the channel (such as 'static' on the telephone or radio) which may lead to the signal received being different from that sent.

Why is the Shannon Weaver model noted as the mother of all communication models? ›

Shannon and Weaver's model is considered as an advanced model than other communication models due to the importance it attaches to the feedback mechanism which lacks in most of the other communication models.

Why Schramm model is the best? ›

The Schramm Communication Model offers a classic approach to and explanation of communication. It can be used to determine how communication between two people works when they're exchanging information, ideas, or attitudes.

Why Schramm is called the father of communication? ›

Schramm was especially influential for his 1964 book Mass Media and National Development which was published in conjunction with UNESCO, which effectively began research into the link between the spread of communication technology and socio-economic development.

### Who proposed the Schramm model of communication? ›

Schramm's Model of Communication was postulated by Wilbur Schramm in 1954, where he suggested that communication is a two-way process where both sender and receiver take turns to send and receive a message. Information is of no use unless and until it is carefully put into words and conveyed to others.

What are 7cs of communication? ›

The seven C's of communication are a list of principles for written and spoken communications to ensure that they are effective. The seven C's are: clarity, correctness, conciseness, courtesy, concreteness, consideration and completeness.

What are the 4 types of communication models? ›

What are linear communication models?
• Aristotle's Model.
• Lasswell's Model.
• Shannon-Weaver Model.
• Berlo's S-M-C-R Model.

What is the importance of communication? ›

In our daily life, communication helps us build relationships by allowing us to share our experiences, and needs, and helps us connect to others. It's the essence of life, allowing us to express feelings, pass on information and share thoughts. We all need to communicate.

In what element of Shannon and Weaver model can noise or interference occur? ›

A sixth element, noise, is a dysfunctional factor: any interference with the message travelling along the channel (such as static on the telephone or radio) which may lead to the signal received being different from that sent.

Why is the transmission model of communication important? ›

Because this model is sender- and message-focused, responsibility is put on the sender to help ensure the message is successfully conveyed. This model emphasizes clarity and effectiveness, but it also acknowledges that there are barriers to effectively sending communication.

What is destination in Shannon-Weaver model? ›

Receiver : The destination of the message from sender. Note : Based on the decoded message the receiver gives their feed back to sender. If the message distracted by noise it will affect the communication flow between sender and receiver. Noise: The messages are transferred from encoder to decoder through channel.

What are some examples of interactive model of communication in real life situation? ›

Human-computer interaction is also now considered as interactive communication as the model is circular where the senders interchange every time. Social media, interactive marketing and user generated contents, ATM machines, online shopping, chat rooms, etc are other examples of interactive communication model.

What communication model focuses mainly on speaker and speech? ›

Aristotle Model is mainly focused on speaker and speech. It can be broadly divided into 5 primary elements: Speaker, Speech, Occasion, Audience and Effect.

Who is the mother of all communication? ›

The Shannon–Weaver model of communication has been called the "mother of all models." Social Scientists use the term to refer to an integrated model of the concepts of information source, message, transmitter, signal, channel, noise, receiver, information destination, probability of error, encoding, decoding, ...

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