nerdexam
Google

PROFESSIONAL-MACHINE-LEARNING-ENGINEER · Question #293

You work at an organization that maintains a cloud-based communication platform that integrates conventional chat, voice, and video conferencing into one platform. The audio recordings are stored in…

The correct answer is B. Use the original audio sampling rate, and transcribe the audio by using the Speech-to-Text API. If possible, set the sampling rate of the audio source to 16000 Hz. Otherwise, set the sample_rate_hertz to match the native sample rate of the audio source (instead of re-sampling). https://cloud.google.com/speech-to-text/docs/best-practices-provide-speech-data#sampling_rate

Submitted by jian89· Apr 18, 2026Data processing and feature engineering

Question

You work at an organization that maintains a cloud-based communication platform that integrates conventional chat, voice, and video conferencing into one platform. The audio recordings are stored in Cloud Storage. All recordings have an 8 kHz sample rate and are more than one minute long. You need to implement a new feature in the platform that will automatically transcribe voice call recordings into a text for future applications, such as call summarization and sentiment analysis. How should you implement the voice call transcription feature following Google- recommended best practices?

Options

  • AUse the original audio sampling rate, and transcribe the audio by using the Speech-to-Text API
  • BUse the original audio sampling rate, and transcribe the audio by using the Speech-to-Text API
  • CUpsample the audio recordings to 16 kHz, and transcribe the audio by using the Speech-to-Text
  • DUpsample the audio recordings to 16 kHz, and transcribe the audio by using the Speech-to-Text

How the community answered

(27 responses)
  • A
    11% (3)
  • B
    78% (21)
  • C
    4% (1)
  • D
    7% (2)

Explanation

If possible, set the sampling rate of the audio source to 16000 Hz. Otherwise, set the sample_rate_hertz to match the native sample rate of the audio source (instead of re-sampling). https://cloud.google.com/speech-to-text/docs/best-practices-provide-speech-data#sampling_rate

Topics

#Speech-to-Text API#Audio processing#Google Cloud#Voice transcription

Community Discussion

No community discussion yet for this question.

Sign up to join the discussion
Full PROFESSIONAL-MACHINE-LEARNING-ENGINEER Practice