DXOMARK https://www.dxomark.com The leading source of independent audio, display, battery and image quality measurements and ratings for smartphone, camera, lens and wireless speaker since 2008. Fri, 22 Oct 2021 13:23:05 +0000 en-US hourly 1 https://wordpress.org/?v=5.6.8 https://www.dxomark.com/wp-content/uploads/2019/09/logo-o-transparent-150x150.png DXOMARK https://www.dxomark.com 32 32 Contrast entropy https://www.dxomark.com/glossary/contrast-entropy/ https://www.dxomark.com/glossary/contrast-entropy/#respond Fri, 22 Oct 2021 13:23:05 +0000 https://www.dxomark.com/?post_type=glossary&p=97807 Contrast entropy is a single-value metric computed from the HDR chart that measures the local contrast preservation in a given part of the scene, and represents the quantity of information contained in it. Large values for entropy mean that the given part of the scene has a good contrast.

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]]> Contrast entropy is a single-value metric computed from the HDR chart that measures the local contrast preservation in a given part of the scene, and represents the quantity of information contained in it. Large values for entropy mean that the given part of the scene has a good contrast.

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]]> https://www.dxomark.com/glossary/contrast-entropy/feed/ 0 Free-form https://www.dxomark.com/glossary/free-form/ https://www.dxomark.com/glossary/free-form/#respond Thu, 07 Jan 2021 10:52:44 +0000 https://www.dxomark.com/?post_type=glossary&p=70563 Freeform lenses have a complex asymmetrical surface, which can help to design smaller, lighter optical systems that let more light pass and have less distortion and fewer aberrations.

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]]> Freeform lenses have a complex asymmetrical surface, which can help to design smaller, lighter optical systems that let more light pass and have less distortion and fewer aberrations.

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]]> https://www.dxomark.com/glossary/free-form/feed/ 0 Gating https://www.dxomark.com/glossary/gating/ https://www.dxomark.com/glossary/gating/#respond Tue, 14 Jan 2020 19:53:04 +0000 https://www.dxomark.com/?post_type=glossary&p=40176 Gating occurs because the noise gate, which is a device or software that mutes a low audio signal, is not properly set. This, in turn, could mute some necessary sounds, such as the ends of words and sentences.

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]]> Gating occurs because the noise gate, which is a device or software that mutes a low audio signal, is not properly set. This, in turn, could mute some necessary sounds, such as the ends of words and sentences.

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]]> https://www.dxomark.com/glossary/gating/feed/ 0 Audio Use case https://www.dxomark.com/glossary/audio-use-case/ https://www.dxomark.com/glossary/audio-use-case/#respond Thu, 10 Oct 2019 12:58:00 +0000 https://www.dxomark.com/?post_type=glossary&p=36332 A use case is a real multimedia scenario tested in DXOMARK protocol

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]]> A use case is a real multimedia scenario tested in DXOMARK protocol

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]]> https://www.dxomark.com/glossary/audio-use-case/feed/ 0 Bass precision https://www.dxomark.com/glossary/bass-precision/ https://www.dxomark.com/glossary/bass-precision/#respond Thu, 10 Oct 2019 12:28:45 +0000 https://www.dxomark.com/?post_type=glossary&p=35506 Evaluates the quality of the conversion of bass power into an attack and the generation of a crisp bass sound.

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]]> Evaluates the quality of the conversion of bass power into an attack and the generation of a crisp bass sound.

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]]> https://www.dxomark.com/glossary/bass-precision/feed/ 0 Bass https://www.dxomark.com/glossary/bass/ https://www.dxomark.com/glossary/bass/#respond Thu, 10 Oct 2019 12:28:45 +0000 https://www.dxomark.com/?post_type=glossary&p=35504 The lower to lowest frequencies within the sound spectrum.  

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]]> The lower to lowest frequencies within the sound spectrum.

 

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]]> https://www.dxomark.com/glossary/bass/feed/ 0 Background https://www.dxomark.com/glossary/background/ https://www.dxomark.com/glossary/background/#respond Thu, 10 Oct 2019 12:28:45 +0000 https://www.dxomark.com/?post_type=glossary&p=35498 Measures sound that is not required during the recording use case—for example, when recording a selfie, the user would want the background noise to be very low to avoid overwhelming their voice.

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]]> Measures sound that is not required during the recording use case—for example, when recording a selfie, the user would want the background noise to be very low to avoid overwhelming their voice.

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]]> https://www.dxomark.com/glossary/background/feed/ 0 Attack https://www.dxomark.com/glossary/attack/ https://www.dxomark.com/glossary/attack/#respond Thu, 10 Oct 2019 12:28:45 +0000 https://www.dxomark.com/?post_type=glossary&p=35496 The initial part of the sound envelope. The attack needs to be precise—for example, for a drum or percussion instrument, the user wants the strike to be in the foreground of the sound space.

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]]> The initial part of the sound envelope. The attack needs to be precise—for example, for a drum or percussion instrument, the user wants the strike to be in the foreground of the sound space.

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]]> https://www.dxomark.com/glossary/attack/feed/ 0 Background artifacts https://www.dxomark.com/glossary/background-artifacts/ https://www.dxomark.com/glossary/background-artifacts/#respond Thu, 10 Oct 2019 12:28:45 +0000 https://www.dxomark.com/?post_type=glossary&p=35494 Evaluates artifacts recorded in background sounds.

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]]> Evaluates artifacts recorded in background sounds.

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