SANYO HOME THEATER

	DVD (digital versatile disc) is an optical disc technology that is expected to rapidly replace the CD-ROM disc (as well as the audio compact disc) over the next few years. The digital versatile disc (DVD) holds 4.7 gigabyte of information on one of its two sides, or enough for a 133-minute movie. With two layers on each of its two sides, it will hold up to 17 GB of video, audio, or other information. (Compare this to the current CD-ROM disc of the same physical size, holding 600 MB.The DVD can hold more than 28 times as much information!) DVD-Video is the usual name for the DVD format designed for full-length movies and is a box that will work with your television set.
	Digital video is part of digital versatile disc (DVD), a new optical disc technology that is expected to rapidly replace the CD-ROM over the next few years. The DVD holds 4.7 gigabytes of information on one of its two sides, or enough for a 133-minute movie. With two layers on each of its two sides, it will hold up to 17 gigabytes of video, audio, or other information. (Compare this to the current CD-ROM disc of the same physical size, holding 600 megabytes. The DVD can hold more than 28 times as much information.)
	CD-DA (Compact Disk- Digital Audio), the original compact disc for music, was defined in the Red Book by Philips and Sony, in 1982. The CD-DA allows a music playing time of 74 minutes 30 seconds. Data on a CD-DA is organized into logical blocks of information. The audio information is stored in frames of 1/75 second length. There are 44,100 samples per second stored. Each sample occupies two bytes (16bits) and there are two channels (left and right) stored on the CD-DA. This gives a sector size of 2,352 bytes per frame, which is the total size of a physical block on a CD.
	Dolby Digital is the standard audio format on DVD. Dolby Digital (formerly called AC-3) is a significant upgrade to Dolby Pro Logic. Dolby Digital has up to six discrete channels of information. Five of the channels are full frequency (20 Hz 20kHz) and one channel is dedicated to reproducing low-frequency effects (LFE). Six-channel Dolby Digital is often designated as 5.1, symbolizing the five full-frequency and one LFE channels. Dolby Digital uses discrete surround sound, where the left rear surround and right rear surround channels are independent and are not frequency limited. The ability to play independent sound in the surround sound channels, creates a more realistic soundstage during DVD playback. * Dolby and the double D are trademarks of Dolby Laboratories Licensing Corporation.
	Dolby Pro Logic is an improvement over standard Dolby Surround. It is a 4-channel surround sound that has information for the left, right, mono surround sound (frequency limited) and adds a new center channel. The center channel, among other things, "anchors" the dialog to the image. The four channels (left, right, center, surround) are encoded onto two audio tracks. Dolby Pro Logic decoders uses a technique called matrixing to derive the center channel and surround sound channel information from the encoded 2-channel signal. DVD discs marked as "Dolby Surround" are really 4-channel Dolby Pro Logic.* Dolby and the double D are trademarks of Dolby Laboratories Licensing Corporation.
	CD-R (for compact disc, recordable) is a type of write once, read many (WORM) compact disc (CD) format that allows one-time recording on a disc. The CD-R (as well as the CD-RW) format was introduced by Philips and Sony in their 1988 specification document, the Orange Book. Prior to the release of the Orange Book, CDs had been read-only audio (CD-Digital Audio, described in the Red Book), to be played in CD players, and multimedia (CD-ROM), to be played in computers' CD-ROM drives. After the Orange Book, any user with a CD recorder drive could create their own CDs from their desktop computers.
	CD-RW (for compact disc, rewriteable) is a compact disc (CD) format that allows repeated recording on a disc. The CD-RW format was introduced by Hewlett-Packard, Mitsubishi, Philips, Ricoh, and Sony, in a 1997 supplement to Philips and Sony's Orange Book. CD-RW is Orange Book III (CD-MO was I, while CD-R was II). Prior to the release of the Orange Book, CDs had been read-only audio (CD-Digital Audio, described fully in the Red Book), to be played in CD players, and multimedia (CD-ROM), to be played in computers' CD-ROM drives. After the Orange Book, any user with a CD Recorder drive could create their own CDs from their desktop computers. CD-RW drives can write both CD-R and CD-RW discs and can read any type of CD.
	MP3 (MPEG-1 Audio Layer-3) is a standard technology and format for compression a sound sequence into a very small file (about one-twelfth the size of the original file) while preserving the original level of sound quality when it is played. MP3 files (identified with the file name suffix of ".mp3") are available for downloading from a number of Web site. Many Windows 98 users will find that they have a player built into their operating system. Otherwise, you can download a player from one of several popular MP3 sites. MP3 files are usually download-and-play files rather than streaming sound files that you link-and-listen-to with RealPlayer and similar products (However, streaming MP3 is possible.) Winamp (PC), MacAmp (Mac), and mpeg123 (UNIX) are popular MP3 players, but there are many others. To create an MP3 file, you use a program called a ripper to get a selection from a CD onto your hard disk and another program called an encoder to convert the selection to an MP3 file. Most people, however, simply download MP3s from someone else and play them.
	Digital Theater Systems (DTS), introduced in 1993 on the film Jurassic Park, is another six channel surround sound technology that is now making its way onto DVD. DTS uses less compression than Dolby Digital (3.5 to 1 vs. Dolby's 12 to 1), has a higher data rate (1.5Mbits/sec vs. Dolby's 384 kbits/sec) and is said to sound better than Dolby Digital. Dolby counters this claim by stating compression can be optimized using a technology called "perceptual encoding," where the compression algorithm uses the knowledge of how humans process sound, to optimize their compression. DTS encoded DVDs require a special DTS decoder that is separate from a Dolby Digital decoder. * The term DTS Digital Out is a trademark of Digital Theater System Inc.
	start your music without even pressing the power button. With Smart Start, when you press play your music begins immediately ( for the CD ,tape, or tuner. )
	a new sorround sound technology intended to create a completely natural, elgonomically enhanced sound environment. Three control setting are available.
	Embrace a revolutionary method of playing and recording music. Audio data is stored in digital form, thus ensuring superb reproduction quality. What is more, you can play and record as often as you want without affecting quality.
	provides enhanced low-frequency response to let headphone listeners enjoy powerful and dynamic sound.
	SANYO's new hyper digital electronic anti-rolling&anti-shock system emplys a 10-second IC memory plus a fully digital data compression system to guarantee high-fidelity CD reproduction free from shock-or vibration-induced interruptions.