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Dolby Headphone
Dolby Headphone is a technology developed by Lake Technology (Australia), that later sold marketing rights to Dolby Laboratories, sometimes referred to as Mobile Surround, which creates a virtual surround sound environment in real-time using any set of two-channel stereo headphones. It takes as input either a 5.1 or a 7.1 channel signal, a Dolby Pro Logic II encoded 2 channel signal (from which 5 or 7 channels can be derived) or a stereo 2 channel signal. It sends as output a 2 channel stereo signal that includes audio cues intended to place the input channels in a simulated virtual soundstage. Dolby Headphone is incorporated into the audio decoders packaged with surround headphones including: * Razer Thresher 7.1 * Razer Thresher Ultimate * HyperX Cloud Revolver S * Astro Gaming A40 System * Astro Gaming A50 System * Logitech G430 * Logitech G35 *Logitech G930 * Logitech G933 * Logitech G633 * Plantronics GameCom Commander * Plantronics Gamecom 777 * Plantronics Gamecom 780 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolby Headphone Logo
Dolby Laboratories, Inc. (often shortened to Dolby Labs and known simply as Dolby) is an American company specializing in Noise reduction#In audio, audio noise reduction, Audio data compression, audio encoding/compression, spatial audio, and High-dynamic-range television, HDR imaging. Dolby licenses its technologies to consumer electronics manufacturers. History Dolby Labs was founded by Ray Dolby (1933–2013) in London, England, in 1965. In the same year, he invented the Dolby noise-reduction system, Dolby Noise Reduction system, a form of audio signal processing for reducing the background hissing sound on audio tape recordings. His first U.S. patent on the technology was filed in 1969, four years later. The method was first used by Decca Records in the UK. He moved the company headquarters to the United States (San Francisco, California) in 1976. The first product Dolby Labs produced was the Dolby 301 unit which incorporated Type A Dolby Noise Reduction, a compander-based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia Belle
Symbian is a discontinued mobile operating system (OS) and computing platform designed for smartphones. It was originally developed as a proprietary software OS for personal digital assistants in 1998 by the Symbian Ltd. consortium. Symbian OS is a descendant of Psion's EPOC, and was released exclusively on ARM processors, although an unreleased x86 port existed. Symbian was used by many major mobile phone brands, like Samsung, Motorola, Sony Ericsson, and above all by Nokia. It was also prevalent in Japan by brands including Fujitsu, Sharp and Mitsubishi. As a pioneer that established the smartphone industry, it was the most popular smartphone OS on a worldwide average until the end of 2010, at a time when smartphones were in limited use, when it was overtaken by iOS and Android. It was notably less popular in North America. The Symbian OS platform is formed of two components: one being the microkernel-based operating system with its associated libraries, and the othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finite Impulse Response
In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of ''finite'' duration, because it settles to zero in finite time. This is in contrast to infinite impulse response (IIR) filters, which may have internal feedback and may continue to respond indefinitely (usually decaying). The impulse response (that is, the output in response to a Kronecker delta input) of an Nth-order discrete-time FIR filter lasts exactly N+1 samples (from first nonzero element through last nonzero element) before it then settles to zero. FIR filters can be discrete-time or continuous-time, and digital or analog. Definition For a causal discrete-time FIR filter of order ''N'', each value of the output sequence is a weighted sum of the most recent input values: :\begin y &= b_0 x + b_1 x -1+ \cdots + b_N x -N\\ &= \sum_^N b_i\cdot x -i \end where: * x /math> is the input signal, * y /math> is the output s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head-related Transfer Function
A head-related transfer function (HRTF), also known as anatomical transfer function (ATF), is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others. Generally speaking, the HRTF boosts frequencies from 2–5 kHz with a primary resonance of +17 dB at 2,700 Hz. But the response curve is more complex than a single bump, affects a broad frequency spectrum, and varies significantly from person to person. A pair of HRTFs for two ears can be used to synthesize a binaural sound that seems to come from a particular point in space. It is a transfer function, describing how a sound from a specific point will arrive at the ear (generally at the outer end of the auditory canal). Some consumer home enter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binaural Recording
Binaural recording is a method of recording sound that uses two microphones, arranged with the intent to create a 3-D stereo sound sensation for the listener of actually being in the room with the performers or instruments. This effect is often created using a technique known as dummy head recording, wherein a mannequin head is fitted with a microphone in each ear. Binaural recording is intended for replay using headphones and will not translate properly over stereo speakers. This idea of a three-dimensional or "internal" form of sound has also translated into useful advancement of technology in many things such as stethoscopes creating "in-head" acoustics and IMAX movies being able to create a three-dimensional acoustic experience. The term "binaural" has frequently been confused as a synonym for the word "stereo", due in part to systematic misuse in the mid-1950s by the recording industry, as a marketing buzzword. Conventional stereo recordings do not factor in natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolby Atmos
Dolby Atmos is a surround sound technology developed by Dolby Laboratories. It expands on existing surround sound systems by adding height channels, allowing sounds to be interpreted as three-dimensional objects with neither horizontal, nor vertical limitation. Following the release of Atmos for the cinema market, a variety of consumer technologies have been released under the Atmos brand, using in-ceiling and up-firing speakers. History The first Dolby Atmos installation was in the El Capitan Theater in Los Angeles, for the premiere of ''Brave'' in June 2012. Throughout 2012, it saw a limited release of about 25 installations worldwide, with an increase to 300 locations in 2013. As of October 2022, there were over 10,000 Dolby Atmos enabled cinema screens, installed, or committed to. Dolby Atmos has also been adapted to a home theater format and is the audio component of Dolby Cinema. Most electronic devices since 2016, as well as smartphones after 2017, have been enabled fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumia 1020
The Nokia Lumia 1020 (known as Lumia 909 during development) is a smartphone developed by Nokia, first unveiled on 11 July 2013 at a Nokia event in New York. It runs Windows Phone 8, but is also Windows Phone 8.1 ready. It contains Nokia's PureView technology, a pixel oversampling technique that reduces an image taken at full resolution into a lower resolution picture, thus achieving higher definition and light sensitivity, and enables lossless digital zoom. It improves on its predecessor, the Nokia 808, by coupling a 41-megapixel 2/3-inch BSI sensor with optical image stabilization (OIS) and a high resolution f/2.2 all-aspherical 1-group Carl Zeiss lens. It was considered to be the most advanced cameraphone when released in September 2013. In January 2014, Nokia released the "Lumia Black" firmware update for the Lumia 1020, adding various new features, including improved image processing in addition to capturing RAW (DNG) files. The Lumia 1020 also received the Lumia Denim sof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumia 920
Nokia Lumia 920 is a smartphone developed by Nokia that runs the Windows Phone 8 operating system. It was announced on September 5, 2012, and was first released on November 2, 2012. It has a 1.5 GHz dual-core Qualcomm Krait CPU and a 4.5" IPS TFT LCD display, as well as a high-sensitivity capacitive touchscreen that can be used with gloves and fingernails; the display is covered by curved Gorilla Glass and has a 9 ms response time. The phone features an 8.7-megapixel PureView camera with OIS; it was the first smartphone camera to implement that technology, as well as to support Qi inductive charging. The phone comes with 32 GB of internal storage, but has no expandable storage. The Lumia 920 was released to mixed to positive reception. Most critics noted the device as the first Windows Phone 8 device to truly match its Android and iOS competitors in hardware, with high-end specifications, a Nokia PureView camera and unique features such as wireless inductive ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumia 820
The Nokia Lumia 820 is a smartphone designed, developed and marketed by Nokia. It is the successor to the Lumia 800 and is one of the first Nokia phones to implement Windows Phone 8 alongside the Nokia Lumia 920. Although sharing a similar appearance with the Lumia 800, the Lumia 820 is a major overhaul over its predecessor, sporting a diagonal OLED display with scratch resistant glass, though lacking Gorilla Glass protection, 1.5 GHz dual-core processor, and an 8.7-megapixel camera. The phone will come with LTE connectivity and a wireless-charging option. The 820 is the first Nokia Windows Phone OS based smartphone to embed a microSD card slot. On October 9, 2012, the largely similar Nokia Lumia 810 was presented. The main differences are more talk time (10.2 hours) due to the larger 1800 mAh battery, an improved 1.3-megapixel front-facing camera, lighter weight, wider and longer dimensions. The Lumia 810 is exclusively made available to T-Mobile customers in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumia 810
The Nokia Lumia 810 is a Windows Phone smartphone made by Nokia exclusively for wireless carrier T-Mobile US. It was announced on October 8, 2012. The device runs the then-new Windows Phone 8 operating system (despite being numbered in the x10 series which is used for Windows Phone 7) and features a 4.3-inch AMOLED WVGA ClearBlack display, an 8-megapixel rear-facing camera, a 1.5 GHz Snapdragon processor, exchangeable shells (cyan and black) and supports Qi inductive charging when equipped with a specific shell. It supports T-Mobile's 4G network. The phone includes an enhanced Nokia Drive package with voice-guided turn-by-turn navigation, and Nokia Transit, which allows navigation through local public transportation. Nokia City Lens offers a hybrid mapping/photography feature that overlays various points of interest in an image, such as businesses. Additional photography-related features are Nokia Cinemagraph, which is "a lens that creates animated GIFs"; panorama setting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia Lumia
Microsoft Lumia (previously the Nokia Lumia) is a discontinued line of mobile devices that was originally designed and marketed by Nokia and later by Microsoft Mobile. Introduced in November 2011, the line was the result of a long-term partnership between Nokia and Microsoft—as such, Lumia smartphones run on Microsoft software, the Windows Phone operating system; and later the newer Windows 10 Mobile. The Lumia name is derived from the partitive plural form of the Finnish word ''lumi'', meaning "snow". On 3 September 2013, Microsoft announced its purchase of Nokia's mobile device business, with the deal closing on 25 April 2014. As a result, the Lumia line's maintenance was transferred to Microsoft Mobile. As part of the transition, Microsoft continued to use the Nokia brand on Lumia devices until October 2014, when it began to officially phase out the Nokia name in its promotion and production of smartphones in favor of Microsoft branding. In November 2014, Microsoft announ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia 808 PureView
The Nokia 808 PureView is a Symbian-powered smartphone first unveiled on 27 February 2012 at the Mobile World Congress. It is the first smartphone to feature Nokia's PureView Pro technology, a pixel oversampling technique that reduces an image taken at full resolution into a lower resolution picture, thus achieving higher definition and light sensitivity, and enables lossless digital zoom. It was one of the most advanced camera phones at the time of its release in May 2012. The Nokia 808 features a 41 MP 1/1.2 in (10.67 × 8 mm) sensor and a high-resolution f/2.4 Zeiss all- aspherical 1-group lens. The 808's sensor was the largest (over 4 times larger than typical compact cameras) sensor ever to be used in a cameraphone at the time of its launch, a record previously held by Nokia's N8 and, as of September 2014, by the Panasonic Lumix CM1. The resolution of the sensor remained the highest to be used in a cameraphone until January 2019, when the Honor View 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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