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  2. Audio equipment testing - Wikipedia

    en.wikipedia.org/wiki/Audio_equipment_testing

    Subjectivist Harry Pearson, long-time editor of The Absolute Sound, an audiophile magazine, has stated: [6] "We believe that the sound of music, unamplified, occurring in a real space is a philosophic absolute against which we may judge the performance of devices designed to reproduce music."

  3. High fidelity - Wikipedia

    en.wikipedia.org/wiki/High_fidelity

    High fidelity. Hi-fi speakers are a key component of quality audio reproduction. High fidelity (often shortened to Hi-Fi or HiFi) is the high-quality reproduction of sound. [1] It is popular with audiophiles and home audio enthusiasts. Ideally, high-fidelity equipment has inaudible noise and distortion, and a flat (neutral, uncolored) frequency ...

  4. Harry Pearson (audio critic) - Wikipedia

    en.wikipedia.org/wiki/Harry_Pearson_(audio_critic)

    The Absolute Sound. Harry Hall Pearson, Jr. (January 5, 1937 – November 4, 2014), known to his readers as HP, was an American journalist, audio reviewer, and publisher who founded The Absolute Sound magazine for high-end audio enthusiasts. Pearson is considered the most influential figure in the history of audiophile journalism. [1]

  5. Comparison of video codecs - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_video_codecs

    Comparison of video codecs. Α video codec is software or a device that provides encoding and decoding for digital video, and which may or may not include the use of video compression and/or decompression. Most codecs are typically implementations of video coding formats. The compression may employ lossy data compression, so that quality ...

  6. Master Quality Authenticated - Wikipedia

    en.wikipedia.org/wiki/Master_Quality_Authenticated

    Master Quality Authenticated (MQA) is a proprietary system for delivering high-quality digital audio. The system includes audio signal processing, lossy audio compression and authentication. MQA requires licensing fees to use. The system was launched in 2014 by Meridian Audio, and is now owned by Lenbrook. The MQA system is a three-part process ...

  7. Video quality - Wikipedia

    en.wikipedia.org/wiki/Video_quality

    Video quality. Video quality is a characteristic of a video passed through a video transmission or processing system that describes perceived video degradation (typically compared to the original video). Video processing systems may introduce some amount of distortion or artifacts in the video signal that negatively impact the user's perception ...

  8. Subjective video quality - Wikipedia

    en.wikipedia.org/wiki/Subjective_video_quality

    Subjective video quality is video quality as experienced by humans. It is concerned with how video is perceived by a viewer (also called "observer" or "subject") and designates their opinion on a particular video sequence. It is related to the field of Quality of Experience. Measuring subjective video quality is necessary because objective ...

  9. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    Audio system measurements are used to quantify audio system performance. These measurements are made for several purposes. Designers take measurements to specify the performance of a piece of equipment. Maintenance engineers make them to ensure equipment is still working to specification, or to ensure that the cumulative defects of an audio ...

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