Infobox file format name 8 Bit Sampled Voice 8SVX icon logo screenshot caption extension .8svx, .iff mime audio 8svx, audio x 8svx type code 8SVX uniform type magic owner Electronic Arts and Commodore International released Start date 1985 ref name EA 8SVX I cite web url http amigan.1emu.net reg 8SVX.txt title 8SVX IFF 8 Bit Sampled Voice authors Steve Hayes and Jerry Morrison date 1985 02 07 at Introduction ... to 16SVX, MAUD standard free url 8 Bit Sampled Voice 8SVX is an audio file format standard developed ... contains linear pulse code modulation LPCM digital audio . ref name EA 8SVX I ref Description The 8SVX ... container. 8SVX subtypes can exist alone within IFF file containers audio only , or can be multiplexing ... authors Jerry Morrison date 1985 01 14 ref Metadata about the 8SVX data stream is contained in separate ... the name, author and copyright. 8SVX supports features such as attack, release and section repeat, which are useful for storage of musical instrument samples. An example layout of an audio only 8SVX IFF audio file border 1 FORM border 1 style background EFEFEF 8SVX border 1 style background CFCFCF VHDR NAME BODY Encoding The majority of 8SVX data streams are encoded using uncompressed linear ... compression ratio at the cost of decreased fidelity. ref name EA 8SVX C cite web url http amigan.1emu.net reg 8SVX.txt title 8SVX IFF 8 Bit Sampled Voice authors Steve Hayes and Jerry Morrison date 1985 ... byte order for the Motorola 68000 family . Support IFF 8SVX encoded audio was the default audio ... subsystem that included an 8SVX decoder 8SVX.datatype . ref name Mosaic OS3 cite web url http ... Sound eXchange . 8SVX support is also available to modern programs via libavcodec Implemented ... types. It superseded 8SVX as the dominant audio subtype for IFF files. Microsoft and International ... by the IFF 8SVX container format, but like AIFF, were extended to support higher bit depths and additional ... formats.html Amiga file formats DEFAULTSORT 8svx Category Computer file formats Category AmigaOS pl ... more details
Infobox Software name SoundApp logo Deleted image removed Image SoundApp.png SoundApp icon screenshot caption author Norman Franke developer released 1993 according to the copyright in the readme file latest release version 2.7.3 latest release date 2000 11 13 latest preview version latest preview date operating system System 7 , Mac OS 8 , Mac OS 9 platform PowerPC and 68k language English language English , with ports to Japanese language Japanese , French language French , Dutch language Dutch , Italian language Italian and German language German status genre Audio player and converter license Freeware website http www cs students.stanford.edu franke SoundApp SoundApp is a freeware audio player software audio player for the Mac OS Macintosh operating system . It was among the earliest MP3 players for the Classic Mac OS, and was widely praised for its ability to play back, and convert between, a variety of audio file formats. The program appears to have been abandoned by its creator, Norman Franke, after the release of SoundApp 2.7.3. Franke s reasons for abandoning the project have never been made public, and SoundApp has never been ported to Mac OS X. Another developer has begun a version for Mac OS X , SoundApp Reborn , ref http thirdcog.eu apps soundapp SoundApp Reborn ref but this project does not use any of Franke s original code. Features Audio formats AIFF and AIFF C Amiga IFF 8SVX Red Book audio CD standard Audio CD Tracks AVR file format AVR DVI ADPCM EPOC 32 Psion Series 5 GSM 06.10 Interactive Multimedia Association IMA ADPCM IRCAM MIDI Amiga MOD file format MOD MPEG Audio including MP3 PARIS PSION sound QuickTime Movies Sound Blaster Creative Voice file VOC Sound Designer file format Sound Designer and Sound Designer II SoundCap SoundEdit Sun Audio AU and NeXT Studio Session Instrument System 7 and SND file SND files Windows WAV References Reflist External links http www cs students.stanford.edu franke SoundApp SoundApp home page http www.mac.org util ... more details
Distinguish Elias delta coding Delta encoding is a way of storing or transmitting data in the form of difference s between sequential data rather than complete files more generally this is known as data differencing . Delta encoding is sometimes called delta compression , particularly where archival histories of changes are required e.g., in software project s . The differences are recorded in discrete files called deltas or diffs , after the Unix file comparison utility, diff . Because changes are often small for example, changing a few words in a large document, or changing a few records in a large table delta encoding greatly reduces data redundancy. Collections of unique deltas are substantially more space efficient than their non encoded equivalents. From a logical point of view the difference between two data values is the information required to obtain one value from the other see relative entropy . The difference between identical values under some equivalence relation equivalence is often called 0 or the neutral element . Simple example Perhaps the simplest example is storing values of bytes as differences deltas between sequential values, rather than the values themselves. So, instead of 2, 4, 6, 9, 7, we would store 2, 2, 2, 3, 2. This is not very useful when used alone, but it can help further compression of data in which sequential values occur often. Interchange File Format IFF 8SVX sound format applies this encoding to raw sound data before applying compression to it. Unfortunately, not even all 8 bit sound sampling signal processing samples compress better when delta encoded, and the usability of delta encoding is even smaller for 16 bit and better samples. Therefore, compression algorithms often choose to delta encode only when the compression is better than without. However, in video compression delta frames can considerably reduce frame size, and are used in virtually every video compression codec . Definition A delta can be defined in 2 ways, sym ... more details
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