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