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  2. Display Data Channel - Wikipedia

    en.wikipedia.org/wiki/Display_Data_Channel

    Display Data Channel (DDC) is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the computer host to adjust monitor parameters, such as brightness and contrast.

  3. Perceptual Evaluation of Audio Quality - Wikipedia

    en.wikipedia.org/wiki/Perceptual_Evaluation_of...

    The second part provides cognitive processing as the human brain does. The next image represents a simple block diagram of the relationship between the human audio system and an objective psychoacoustic model. thumbs. From the model comparison of the test signal with the (original) reference signal, a number of model output variables are derived.

  4. Computer monitor - Wikipedia

    en.wikipedia.org/wiki/Computer_monitor

    A monitor is typically connected to its host computer via DisplayPort, HDMI, USB-C, DVI, or VGA. Monitors sometimes use other proprietary connectors and signals to connect to a computer, which is less common. Originally computer monitors were used for data processing while television sets were used for video.

  5. Audio equipment testing - Wikipedia

    en.wikipedia.org/wiki/Audio_equipment_testing

    Objectivists claim that digital sound can have higher fidelity than analog sound because it lacks clicks, pops, wow, flutter, audio feedback, degradation, generational loss, and rumble, has a higher signal-to-noise ratio, has a wider dynamic range, has less total harmonic distortion, and has a flatter and more extended frequency response.

  6. DisplayPort - Wikipedia

    en.wikipedia.org/wiki/DisplayPort

    This is a self-clocking system, so no dedicated clock signal channel is necessary. [8]: §1.7.1 Unlike DVI and HDMI, which vary their transmission speed to the exact rate required for the specific video format, DisplayPort only operates at a few specific speeds; any excess bits in the transmission are filled with "stuffing symbols".

  7. Digital Visual Interface - Wikipedia

    en.wikipedia.org/wiki/Digital_Visual_Interface

    In addition to digital, some DVI connectors also have pins that pass an analog signal, which can be used to connect an analog monitor. The analog pins are the four that surround the flat blade on a DVI-I or DVI-A connector. A VGA monitor, for example, can be connected to a video source with DVI-I through the use of a passive adapter. Since the ...

  8. Audio signal flow - Wikipedia

    en.wikipedia.org/wiki/Audio_signal_flow

    Audio signal flow is the path an audio signal takes from source to output. [1] The concept of audio signal flow is closely related to the concept of audio gain staging; each component in the signal flow can be thought of as a gain stage. In typical home stereo systems, the signal flow is usually short and simple, with only a few components.

  9. Codec listening test - Wikipedia

    en.wikipedia.org/wiki/Codec_listening_test

    A codec listening test is a scientific study designed to compare two or more lossy audio codecs, usually with respect to perceived fidelity or compression efficiency. Most tests take the form of a double-blind comparison. Commonly used methods are known as "ABX" or "ABC/HR" or "MUSHRA". There are various software packages available for ...