Questions and Answers
What is the sampling rate in digital audio?
The number of times per second that a sound is measured during the recording process
Which device contains a variety of input and output jacks, along with audio-processing circuitry?
Sound card
What is the most popular digital audio format?
MP3
Which type of software allows you to play digital audio files?
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What is the process by which machines produce sound resembling spoken words?
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What is the color depth in an image?
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What is used to control color depth in an image?
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Which file compression technique recodes data in an image file so that it contains fewer bits?
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What do vector graphics contain instructions for?
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What type of software is used to modify or edit bitmap graphics?
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What is the process by which machines produce sound resembling spoken words?
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What is the number of times per second that a sound is measured during the recording process called?
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Which file format is used for vector graphics on the Web?
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What does color depth refer to in an image?
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What is the device that contains a variety of input and output jacks, plus audio-processing circuitry called?
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Which technique recodes data in an image file so that it contains fewer bits?
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Which type of graphical format usually requires less storage space than bitmap images?
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'Rasterization' superimposes a grid over a vector image and determines the color for each pixel. What does this statement refer to?
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'Lossy compression' is a technique commonly used in digital media. What does 'lossy compression' involve?
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What is the process by which machines produce sound resembling spoken words?
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What is used to control color depth in an image?
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'Lossy compression' is a technique commonly used in digital media. What does 'lossy compression' involve?
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Which type of software allows you to play digital audio files?
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What is the number of times per second that a sound is measured during the recording process called?
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What type of graphical format usually requires less storage space than bitmap images?
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'Rasterization' superimposes a grid over a vector image and determines the color for each pixel. What does this statement refer to?
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Which device contains a variety of input and output jacks, along with audio-processing circuitry?
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Study Notes
Digital Audio
- The sampling rate in digital audio measures the number of times per second that a sound is measured during the recording process.
- The most popular digital audio format is not specified, but audio files can be played using media player software.
Audio Equipment
- A mixer is a device that contains a variety of input and output jacks, along with audio-processing circuitry.
Image File Formats
- Color depth in an image refers to the number of bits used to represent the color of each pixel.
- Bit-depth is used to control color depth in an image.
- Lossless compression techniques, such as Huffman coding, recode data in an image file so that it contains fewer bits.
Graphics
- Vector graphics contain instructions for drawing shapes and lines.
- Raster graphics editors are used to modify or edit bitmap graphics.
- SVG (Scalable Vector Graphics) is a file format used for vector graphics on the Web.
- Vector graphics usually require less storage space than bitmap images.
Speech Synthesis
- Text-to-speech synthesis is the process by which machines produce sound resembling spoken words.
Compression Techniques
- Lossy compression is a technique commonly used in digital media, which involves discarding some of the data to reduce the file size.
- Rasterization superimposes a grid over a vector image and determines the color for each pixel.
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