High dynamic range
Encyclopedia
High dynamic range is a term generally used for media applications such as digital imaging
and digital audio production
. It is a feature that is capable of producing a much higher dynamic range
than is widely available at the moment.
Applications in digital imaging:
Applications in digital audio production
Digital imaging
Digital imaging or digital image acquisition is the creation of digital images, typically from a physical scene. The term is often assumed to imply or include the processing, compression, storage, printing, and display of such images...
and digital audio production
Digital audio
Digital audio is sound reproduction using pulse-code modulation and digital signals. Digital audio systems include analog-to-digital conversion , digital-to-analog conversion , digital storage, processing and transmission components...
. It is a feature that is capable of producing a much higher dynamic range
Dynamic range
Dynamic range, abbreviated DR or DNR, is the ratio between the largest and smallest possible values of a changeable quantity, such as in sound and light. It is measured as a ratio, or as a base-10 or base-2 logarithmic value.-Dynamic range and human perception:The human senses of sight and...
than is widely available at the moment.
Applications in digital imaging:
- High dynamic range imagingHigh dynamic range imagingIn image processing, computer graphics, and photography, high dynamic range imaging is a set of techniques that allows a greater dynamic range between the lightest and darkest areas of an image than current standard digital imaging techniques or photographic methods...
(HDRI), the compositing of images or videos to extend the dynamic range beyond the native capability of the capturing device - High dynamic range renderingHigh dynamic range renderingIn 3D computer graphics, high dynamic range rendering , also known as high dynamic range lighting, is the rendering of computer graphics scenes by using lighting calculations done in a larger dynamic range. This allows preservation of details that may be lost due to limiting contrast ratios...
(HDRR), the real-time rendering of virtual environments using a dynamic range of 65535:1 or higher (used in computer technology)
Applications in digital audio production
- XDR (eXtended Dynamic Range)XDR (audio)XDR is a quality-control and duplication process for the mass-production of pre-recorded audio cassettes. It is a process designed to provide higher quality audio on pre-recorded cassettes by checking the sound quality at all stages of the tape duplication process...
: Used to provide higher quality audio when using microphone sound systems or recording into tape cassettesCompact CassetteThe Compact Cassette, often referred to as audio cassette, cassette tape, cassette, or simply tape, is a magnetic tape sound recording format. It was designed originally for dictation, but improvements in fidelity led the Compact Cassette to supplant the Stereo 8-track cartridge and reel-to-reel...
. - HDR Audio: a dynamic mixing technique used in EA Digital Illusions CE Frostbite EngineFrostbite EngineFrostbite is a game engine developed by EA Digital Illusions CE, creators of the Battlefield series.DICE has used both versions of the engine for their in-house games Battlefield: Bad Company, Battlefield 1943, and Battlefield: Bad Company 2. Frostbite 1.5 has also been used for the multiplayer...
to allow relatively louder sounds to drown out softer sounds.