Exploring sound

Cards (26)

  • What are the two key parameters that determine the digital representation of sound?
    Sampling rate and bit depth
  • What does the combination of sampling rate and bit depth determine in sound representation?
    Fidelity or quality
  • What is the sampling rate measured in?
    Hertz (Hz)
  • WAV is an uncompressed audio file format that preserves the full fidelity of the original sound.

    True
  • Audio data can be compressed using two main techniques
  • The sampling rate is the number of samples taken per second
  • Sampling captures the amplitude of a sound wave at discrete intervals.
    True
  • WAV files preserve the full fidelity of the original sound.
    True
  • Sample rate is measured in Hertz
  • A higher bit depth allows for a wider range of amplitudes to be captured, resulting in higher sound quality.

    True
  • Quantization uses a finite number of bits to represent the amplitude of each sample.

    True
  • Which audio file format uses lossy compression to reduce file size?
    MP3
  • Lossless compression reduces file size without losing any audio data.

    True
  • Lossless compression reduces file size without losing any audio data
  • Match the sound parameter with its definition:
    Sampling Rate ↔️ Number of samples per second
    Bit Depth ↔️ Number of bits per sample
  • Match the audio file format with its characteristics:
    MP3 ↔️ Lossy compression, smaller file size
    WAV ↔️ Uncompressed, larger file size
  • Bit rate measures the number of bits used to represent each second of audio.

    True
  • The sampling rate is the number of samples taken per second
  • The sampling rate determines how many samples are taken per second
  • A higher bit depth allows for a wider range of amplitudes
  • Lossy compression reduces file size by discarding some audio data
  • Lossy compression reduces file size by discarding some audio data.

    True
  • A higher bit depth allows for a wider range of amplitudes to be captured.

    True
  • Quantization represents the amplitude of each sample using a specific number of bits
  • Lossy compression, used in formats like MP3, removes some audio information
  • Uncompressed audio files always result in larger file sizes.

    True