Data Storage for Images and Sounds

What is the primary purpose of image compression?

• To enhance image quality and resolution.

• To convert images into text format.

• To reduce file size and improve storage and transmission efficiency.

• To increase the color depth of images.

Name two common file formats for storing images.

• JPEG, PNG

• TIFF

• BMP

What is the difference between lossy and lossless audio compression?

• Both lossy and lossless compression result in identical audio quality.

• Lossy compression improves audio quality while reducing file sizes.

• Lossy compression sacrifices audio quality for smaller file sizes, while lossless compression maintains audio quality at the cost of larger file sizes.

• Lossless compression eliminates all audio data for smaller files.

a 40 second long sound that is recorded at a sampling frequency of 9000 hertz and a 32 bit bit depth

Which file format is typically used for high-quality audio?

• TXT

• JPEG

• MP3

• WAV

What does the term 'bit depth' refer to in sound recording?

• Bit depth refers to the total duration of a sound recording.

• Bit depth indicates the frequency of sound waves in a recording.

• Bit depth refers to the number of bits used to represent each audio sample in sound recording.

• Bit depth is the number of audio tracks in a sound recording.

Explain the concept of sampling rate in audio files.

• The sampling rate is the total duration of an audio file in seconds.

• The sampling rate determines the loudness of the audio file.

• The sampling rate is the number of samples of audio taken per second, measured in Hertz (Hz), affecting audio quality and frequency range.

• The sampling rate is the number of audio channels in a file.

What is the significance of resolution in image quality?

• Higher resolution always means better image quality regardless of other factors.

• Resolution is only important for printing images, not for digital displays.

• Resolution is significant in image quality as it determines the level of detail and clarity in the image.

• Resolution affects the color saturation of an image.

Name a popular cloud storage service for images and sounds.

• Dropbox

• OneDrive

• Google Drive

• iCloud

An image that is 100pixels wide and 150 pixels high and uses 32 bit colour depth will be?