Lesson Two: Install and Configure Multimedia Devices Flashcards
What are the three main components of an audio subsystem?
Sound card, input device, and output device. You can have more than one input/output.
What is frequency response, and what is its use?
The volume produced by different frequencies. This determines the quality of audio playback.
What is the basis of a sound/audio card?
The DSP (Digital Sound Processor) chip, which is comprised of DACs (Digital-to-Analog Converters).
What is the basis of a sound/audio card?
The DSP (Digital Sound Processor) chip, which is comprised of DACs (Digital-to-Analog Converters).
What does a DAC do?
Converts the digital sounds from a CPU into an analog signal for the speakers.
What is an S/PDIF jack? Where is it most commonly used?
Sony/Phillips Digital Interface jack. Most often used to carry digital data to surround-sound speaker systems.
What does MIDI mean? What is it used for?
Musical Instrument Digital Interface. Used to control MIDI equipment like a synthesizer or drum machine.
How is an analog sound wave recorded?
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.
The digicam (digital camera) market is divided into what three categories?
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.
What four measurements are used to represent digicam quality?
Lens, shutter speed, feature set, and resolution.
