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Sony Ericsson W880i
The Sony Ericsson W880i is a mobile phone that was announced on 6 February 2007 and released in spring 2007. Part of Sony Ericsson's Walkman series, the phone has been popular due to its tiny dimensions and low weight. At only 9.4 mm thick, the W880 was one of the few phones on the market that were thinner than 1 cm (10 mm), the other notable example being the Nokia 5310 from later that year. The W880i is available in three different colour schemes; "Flame Black", "Steel Silver" and "Pitch Black". There is a fourth color scheme, "Gold", which is exclusively available to Vodafone. There is also a non-3G version of the phone; the Sony Ericsson W888c. Features The W880 features a 2.0-megapixel camera (without autofocus and flash) and a secondary VGA camera located on the front which can be used for 3G video conferencing. The phone also comes with Walkman Player v2.0, which gives a faster interface with very few differences from the previous version. The phone comes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pixel
In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a Raster graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, pixels are the smallest element that can be manipulated through software. Each pixel is a Sampling (signal processing), sample of an original image; more samples typically provide more accurate representations of the original. The Intensity (physics), intensity of each pixel is variable. In color imaging systems, a color is typically represented by three or four component intensities such as RGB color model, red, green, and blue, or CMYK color model, cyan, magenta, yellow, and black. In some contexts (such as descriptions of camera sensors), ''pixel'' refers to a single scalar element of a multi-component representation (called a ''photosite'' in the camera sensor context, although ''wikt:sensel, sensel'' is sometimes used), while in yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vodafone
Vodafone Group Public Limited Company () is a British Multinational company, multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates Service (economics), services in Asia, Africa, Europe, and Oceania. , Vodafone owns and operates networks in 15 countries, with partner networks in 46 further countries. Its Vodafone Global Enterprise division provides telecommunications and IT services to corporate clients in 150 countries. Vodafone has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. The company has a secondary listing on the NASDAQ as American depositary receipts (ADRs). Name The name Vodafone comes from ''voice data fone'' (the latter a sensational spelling of "telephone, phone"), chosen by the company to "reflect the provision of voice and data services over mobile phones". History Racal Telecom: 1980 to 1991 In 1980, Ernest Harrison, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windows Media Audio
Windows Media Audio (WMA) is a series of audio codecs and their corresponding audio coding formats developed by Microsoft. It is a proprietary technology that forms part of the Windows Media framework. Audio encoded in WMA is stored in a digital container format called Advanced Systems Format (ASF). WMA consists of four distinct codecs. The original WMA codec, known simply as ''WMA'', was conceived as a competitor to the popular MP3 and RealAudio codecs. ''WMA Pro'', a newer and more advanced codec, supports multichannel and high-resolution audio. A lossless codec, ''WMA Lossless'', compresses audio data without loss of audio fidelity (the regular WMA format is lossy). ''WMA Voice'', targeted at voice content, applies compression using a range of low bit rates. Development history The first WMA codec was based on earlier work by Henrique Malvar and his team which was transferred to the Windows Media team at Microsoft. Malvar was a senior researcher and manager of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adaptive Multi-rate Compression
The Adaptive Multi-Rate (AMR, AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR is a multi-rate narrowband speech codec that encodes narrowband (200–3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality speech starting at 7.4 kbit/s. AMR was adopted as the standard speech codec by 3GPP in October 1999 and is now widely used in GSM and UMTS. It uses link adaptation to select from one of eight different bit rates based on link conditions. AMR is also a file format for storing spoken audio using the AMR codec. Many modern mobile telephone handsets can store short audio recordings in the AMR format, and both free and proprietary programs exist (see Software support) to convert between this and other formats, although AMR is a speech format and is unlikely to give ideal results for other audio. The common filename extension is .amr. There also exists another storage format for AMR that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MPEG-4 Part 14
MP4 (formally MPEG-4 Part 14), is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the specification is .mp4. MPEG-4 Part 14 is a standard specified as a part of the MPEG-4 specifications, formally as ISO/ IEC 14496-14:2003. Unlike the audio-only compression formats MP3 and MP2, MP4 is a container format that can hold various types of media from various codecs. During the 2000s, portable media players were sometimes erroneously advertised as "MP4 players", even if they may play a different format like AMV video and not necessarily the MPEG-4 Part 14 format. Data streams Most kinds of data can be embedded in MPEG-4 Part 14 files through ''private streams''. A separate hint track is used to include streaming information in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AAC+
High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio as part of the MPEG-4 standards. It is an extension of Low Complexity AAC (AAC-LC) optimized for low-bitrate applications such as streaming audio. The usage profile HE-AAC v1 uses spectral band replication (SBR) to enhance the modified discrete cosine transform (MDCT) compression efficiency in the frequency domain. The usage profile HE-AAC v2 couples SBR with Parametric Stereo (PS) to further enhance the compression efficiency of stereo signals. HE-AAC is defined as an MPEG-4 Audio profile in ISO/IEC 14496–3. HE-AAC is used in digital radio standards like HD Radio, DAB+ and Digital Radio Mondiale. History The progenitor of HE-AAC was developed by Coding Technologies by combining MPEG-2 AAC-LC with a proprietary mechanism for spectral band replication (SBR), to be used by XM Radio for their satellite radio service. Subsequently, Coding Technologies submitt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Audio Coding
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. It was developed by Dolby, AT&T, Fraunhofer and Sony, originally as part of the MPEG-2 specification but later improved under MPEG-4.ISO (2006ISO/IEC 13818-7:2006 – Information technology — Generic coding of moving pictures and associated audio information — Part 7: Advanced Audio Coding (AAC), Retrieved on 2009-08-06ISO (2006, Retrieved on 2009-08-06 AAC was designed to be the successor of the MP3 format (MPEG-2 Audio Layer III) and generally achieves higher sound quality than MP3 at the same bit rate. AAC encoded audio files are typically packaged in an MP4 container most commonly using the filename extension .m4a. The basic profile of AAC (both MPEG-4 and MPEG-2) is called AAC-LC (''Low Complexity''). It is widely supported in the industry and has been adopted as the default or standard audio format on products including Apple's iTunes Store, Nintendo's Wii, DSi and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIDI
Musical Instrument Digital Interface (; MIDI) is an American-Japanese technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of electronic musical instruments, computers, and related audio devices for playing, editing, and recording music. A single MIDI cable can carry up to sixteen channels of MIDI data, each of which can be routed to a separate device. Each interaction with a key, button, knob or slider is converted into a MIDI event, which specifies musical instructions, such as a note's pitch, timing and velocity. One common MIDI application is to play a MIDI keyboard or other controller and use it to trigger a digital sound module (which contains synthesized musical sounds) to generate sounds, which the audience hears produced by a keyboard amplifier. MIDI data can be transferred via MIDI or USB cable, or recorded to a sequencer or digital audio workstation to be edited or played back. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung X820
Samsung SGH-X820, also known as ''Ultra Edition 6.9'', is a mobile phone created by Samsung and announced in Q3 2006, as part of the Samsung Ultra Edition range. Samsung marketed the device as "the world's slimmest mobile phone", and as a competitor to the Motorola SLVR L7. The X820 surpassed Samsung D830, released that same year, which Samsung previously marketed as "the world's slimmest". The carrier-unlocked U.S. price on late July 2006 was $449.00. Hardware The X820 features a 2-inch-diameter and 262,000-color LCD screen with a 220×176-pixel resolution in landscape screen layout instead of the usual portrait screen layout of other phones. The phone uses GPRS and EDGE for mobile Internet, and contains Bluetooth v1.2 for close range wireless connectivity. The device holds a built-in, roughly 2-megapixel digital camera, thus taking pictures with a maximum resolution of 1600×1200 pixels. The camera is in the top part of the phone, clearly visible where the phone is a bit thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola Fone
The Motorola F3, also marketed as the Motofone (styled MOTOFONE), is a candybar style GSM mobile phone from Motorola, released on 28 November 2006. A CDMA variant was released, F3c. It was the first mobile phone to use an electronic paper display. The Motofone F3 was designed to appeal to the low-end market and developing countries, and was thus less functional, but also less expensive than most phones. Motorola made it appealing to developing markets and people with reading and visual difficulties by using only simple symbols and using speech synthesis to identify tasks in the menu. Features Display technology The F3 was the first mobile phone to use electronic paper in its screen. Motorola used the term ClearVision to describe the new display, which was manufactured using E Ink's electrophoretic imaging film. The electronic paper main display allowed for the phone's thinness (no glass), longer battery life, and outdoor viewability (paper-like reflectivity). It had a backligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
W880i Silver
The W88 is an American thermonuclear warhead, with an estimated yield of , and is small enough to fit on MIRVed missiles. The W88 was designed at the Los Alamos National Laboratory in the 1970s. In 1999, the director of Los Alamos who had presided over its design described it as "the most advanced U.S. nuclear warhead". As of 2021, the latest version is called the W88 ALT 370, the first unit of which came into production on 1 July, 2021, after 11 years of development. The Trident II submarine-launched ballistic missile (SLBM) can be armed with up to eight W88 warheads (Mark 5 re-entry vehicle) or twelve 100 kt W76 warheads (Mark 4 re-entry vehicle), but it is limited to eight warheads under the Strategic Offensive Reductions Treaty. History Much of the work was done on the warhead by Los Alamos National Laboratory before the introduction of the Threshold Test Ban Treaty in 1976. A production run of 4000 to 5000 warheads was initially envisioned but production was halted afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
