IPA IP 2024 Question 78

Topic: Multimedia

A question IPA Japan published in 令和6年度 ITパスポート試験 公開問題 問78, translated into English. ITPEC is based on the same exams.

Same question on ITPEC: Oct 2025 Q25

When the process for a smart speaker to provide a voice response to the content of a user speaking to a smart speaker is as in (1) through (4), which of the following is the process that corresponds to voice recognition?

(1)The voice of the user is transformed into text data.(2)Text data is analyzed, and the meaning is understood.(3)The content of the response is decided, and text data is created.(4)The created text data is read out.

Explanation

(1), turning the user's voice into text data — voice recognition is the speech-to-text step and nothing more.

The four steps of the smart speaker are four different technologies:

  • •(1) Voice recognition (speech recognition): sound of the voice → text
  • •(2) Natural language processing: analyses the text and works out its meaning
  • •(3) Dialogue processing: decides the response and creates it as text
  • •(4) Speech synthesis (text-to-speech): reads the created text aloud

Answer (a)

Why not others:

  • •(b) — understanding the meaning of text is natural language processing; by this point recognition has already produced the text
  • •(c) — deciding the content of the answer is response generation, done on text, with no voice involved
  • •(d) — reading text aloud is speech synthesis, the reverse direction of voice recognition

Key rule: Voice recognition converts sound into text; understanding what the text means is natural language processing, and producing a voice from text is speech synthesis.

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This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.