Directions : Read the following passage and answer the questions. Voice or…
2023
Directions : Read the following passage and answer the questions.
Voice or speaker recognition refers to a machine or program's ability to interpret dictation or understand and execute spoken commands. This technology has become increasingly prominent with the _____________ of artificial intelligence (AI) and intelligent assistants like Amazon's Alexa and Apple's Siri. Offering hands free interactions, voice recognition systems enable users to make requests, set reminders, and perform various tasks simply by speaking.
The process involves automatic speech recognition (ASR) programs that can identify and differentiate voices. Some ASR programs necessitate users to train the system for improved accuracy in converting speech to text. Evaluation of a voice's frequency, accent, and speech flow is integral to voice recognition systems.
While voice recognition and speech recognition are often used interchangeably, they have distinct meanings. Voice recognition identifies the speaker, whereas speech recognition assesses the content of what is said.
In practice, voice recognition software on computers converts analog audio into digital signals through analog-to-digital (A/D) conversion. This digital database of words or syllables is then compared to signals during pattern recognition. The size of the program's effective vocabulary depends on the computer's RAM capacity, with faster processing speeds enhancing search capabilities.
Voice recognition involves analyzing speech through models like the hidden Markov model or recurrent neural networks. The former breaks down spoken words into phonemes, while the latter uses previous outputs to influence current inputs, improving capabilities and accuracy with increased data.
The integration of voice recognition into smartphones and home devices like Google Home and Amazon Echo has made this technology ubiquitous. As more users engage with voice recognition, the wealth of data generated enhances the capabilities and accuracy of these systems, indicating a promising trajectory for the technology's future.
What is the specific focus of voice recognition in comparison to speech recognition?
- A.
Voice recognition predominantly centers on discerning the speaker's identity rather than appraising the uttered content.
- B.
Voice recognition deciphers the speaker's words and then correlates them with nearby speakers.
- C.
Speech recognition primarily concentrates on the speaker's tone, whereas voice recognition identifies the speaker's voice modulations.
- D.
The terms voice recognition and speech recognition are frequently used interchangeably, as they serve a similar purpose.
- E.
Voice recognition entails discerning the distinct acoustic modulations of the speaker, whereas speech recognition proffers lexical conjectures to the speaker.
Attempted by 2 students.
Show answer & explanation
Correct answer: A
Concept
Voice recognition and speech recognition are two distinct capabilities of an automatic speech recognition (ASR) system. Voice recognition answers the question "WHO is speaking?" — it identifies the speaker from individual vocal traits such as frequency, accent, and speech flow. Speech recognition answers "WHAT is being said?" — it converts the spoken content into words or commands, regardless of who said them.
Application
The passage states the distinction directly: "Voice recognition identifies the speaker, whereas speech recognition assesses the content of what is said." So the specific focus of voice recognition is the identity of the speaker, not the meaning or wording of the utterance. The statement that voice recognition centers on discerning the speaker's identity rather than appraising the uttered content matches this exactly and is the answer.
Why the other statements do not fit
Saying voice recognition deciphers the words and then correlates them with nearby speakers swaps the two roles — decoding words is the job of speech recognition, and the passage never mentions correlating with nearby speakers.
Saying speech recognition concentrates on tone while voice recognition tracks modulations again reverses the definitions; the passage ties speaker traits (frequency, accent, flow) to voice recognition, not tone-analysis to speech recognition.
Saying the two terms are interchangeable and serve a similar purpose contradicts the passage, which explicitly says they "have distinct meanings."
Saying speech recognition only "proffers lexical conjectures" understates it — the passage describes speech recognition as assessing the actual content of what is said, not merely guessing words.