Lesson Two: Install and Configure Multimedia Devices Flashcards

1
Q

What are the three main components of an audio subsystem?

A

Sound card, input device, and output device. You can have more than one input/output.

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2
Q

What is frequency response, and what is its use?

A

The volume produced by different frequencies. This determines the quality of audio playback.

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3
Q

What is the basis of a sound/audio card?

A

The DSP (Digital Sound Processor) chip, which is comprised of DACs (Digital-to-Analog Converters).

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3
Q

What is the basis of a sound/audio card?

A

The DSP (Digital Sound Processor) chip, which is comprised of DACs (Digital-to-Analog Converters).

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4
Q

What does a DAC do?

A

Converts the digital sounds from a CPU into an analog signal for the speakers.

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5
Q

What is an S/PDIF jack? Where is it most commonly used?

A

Sony/Phillips Digital Interface jack. Most often used to carry digital data to surround-sound speaker systems.

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6
Q

What does MIDI mean? What is it used for?

A

Musical Instrument Digital Interface. Used to control MIDI equipment like a synthesizer or drum machine.

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7
Q

How is an analog sound wave recorded?

A

The sound card samples the wave by dividing it into a number of slices per second (sample rate, can vary). The higher the sample rate, the better the representation. Noise levels are measured by Total Harmonic Distortion (THD) and Signal-to-Noise Ratio (SNR). The lower the better.

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8
Q

The digicam (digital camera) market is divided into what three categories?

A

Consumer models – replicates the features of 35mm cameras.

Professional DSLR (Digital Single Lens Reflex) – replaceable lenses and manual adjustment, similar to the traditional viewfinder method.

Prosumer – between the two, ranging from high end consumer models to low end DSLR models.

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9
Q

What four measurements are used to represent digicam quality?

A

Lens, shutter speed, feature set, and resolution.

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