Efficient Source Encoder Functional Requirements Quiz
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What is one of the functional requirements for an efficient source encoder?

  • The code words produced by the encoder are in binary form. (correct)
  • The code words produced by the encoder are in decimal form.
  • The source code does not need to be decodable.
  • The source code can be decoded in multiple ways.

    • What does the term 'code efficiency' refer to in the context of source coding?

  • The speed at which the source code can be transmitted.
  • The rate at which errors occur during encoding.
  • A measure of how close the source coding is to maximum efficiency. (correct)
  • The number of bits needed to represent a single symbol.

    • For a fixed-length code with block length L = 3, how many symbols are in the alphabet X?

  • 6
  • 7 (correct)
  • 5
  • 8

    • How can the overall code length, L, be calculated?

    <p>By taking the average code word length based on symbol probabilities.</p> Signup and view all the answers

    In a fixed-length code with block length L = 3, what does C(c) represent?

    <p>010</p> Signup and view all the answers

    What is the purpose of having uniquely decodable source code in source encoding?

    <p>To ensure that any encoded binary sequence can only be decoded into one original source sequence.</p> Signup and view all the answers

    If two fair dice are rolled, the number of possible outcomes is:

    <p>36</p> Signup and view all the answers

    For a fair die with six equally likely outcomes, the entropy per message is:

    <p>$\log_2 6$ bits/message</p> Signup and view all the answers

    For three rolls of a fair die, the length of the optimal fixed-length code is:

    <p>8 bits/message</p> Signup and view all the answers

    Variable-length codes are more efficient than fixed-length codes when:

    <p>The source symbols have different probabilities</p> Signup and view all the answers

    A key requirement for any variable-length code is that it must be:

    <p>Uniquely decodable</p> Signup and view all the answers

    In the variable-length code given: C(a)=0, C(b)=10, C(c)=11, which codeword has the shortest length?

    <p>C(a)</p> Signup and view all the answers

    What is the purpose of source coding?

    <p>To represent data generated by a discrete source efficiently</p> Signup and view all the answers

    Which of the following is NOT a characteristic of an effective source coding technique?

    <p>It preserves all information in the original data</p> Signup and view all the answers

    What is the primary advantage of source coding?

    <p>Reduced bandwidth requirements</p> Signup and view all the answers

    Which of the following is a commonly used source coding technique?

    <p>Huffman coding</p> Signup and view all the answers

    In the context of source coding, what is the meaning of the term 'symbol'?

    <p>A unit of data representation</p> Signup and view all the answers

    Which of the following statements about source coding is TRUE?

    <p>It can be lossless or lossy, depending on the application</p> Signup and view all the answers

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