【 Weak current College 】 laserdisc player common terminology

What is MPEG? MPEG (Moving Picture Experts Group), the moving picture experts group, is the International Organization for Standardization (ISO) dedicated for moving picture coding standard working group, the standard is the international common criteria, called the MPEG standard, the standard by video, audio and system made up of three parts. What is a stereo? stereo it has a separate two-channel; left channel recording sound or accompaniment, right channel recording accompaniment or sound singing karaoke, you can select "channel" button, choose left, right, stereo channels. What is a linear PCM? PCM (Pulse Code Modulation), i.e. Pulse Code modulation, which refers to the analog audio signal only after sampling, refers to the analog audio signal only after sampling, modulus are converted to PCM signal, and without any coding and compression. Normal CD sampling frequency linear PCM as 44.1kHz, quantization precision dynamic range for 16bit, while for 98dB DVD linear PCM quantization precision have 16bit, 20bit, 24 bit, sampling frequency is divided into 96 kHz, 48kHz, 192 kHz, dynamic range up to 114dB, sound fidelity and greater expressiveness. What is Dolby directional logic (Dolby Pro Logic) surround? is the United States Dolby Laboratories developed second-generation Dolby Surround sound system; it has four independent channels L, R, C, S-channel, after redirect logic encoded compressed into LT, two-channel recording RT to the carrier. Replay again through special Dolby directional logic decoder restore for four channels. Because this kind of surround sound system for low cost, show source rich and better sound field positioning and Telepresence, thereby gaining widespread use. What is Dolby Digital (Dolby Digital) surround Dolby Digital AC-3? (AC-3) is a United States Dolby Laboratories has developed a digital audio encoding, it provides full frequency 3Hz ~ 20kHz five completely separate channels, including the main audio channel, left and rightof the channel, rear left and right surround channels. Directional logic and Dolby Surround sound system (Dolby Pro-Logic) the biggest difference is the rear left and right surround is a stereo track, and each channel are all in the frequency domain. In addition, in order to strengthen the subwoofer's sound effects, also has a low frequency effects channel (commonly known as 0.1 channel). This type of amplifier belongs to the grade of the surround sound amplifier. What is DTS (Digital Theater System) surround sound system DTS DTS by? United States company and Universal Studios to develop digital cinema surround sound system. With Dolby Digital are similar, it is also a multichannel compression code technology. DTS uses the CAC (coherent acoustic coding) structure of the compression method is different from Dolby Digital compression, the compression ratio is typical of 3: 1, only a quarter of Dolby Digital, less the original signal is lost, you can retain the original sound field in a wealth of fine signal, DTS sampling frequency is 96KHz Dolby Digital 48KHz doubled, most high bit bits 24Bit. What is a linear PCM audio? PCM (Pulse Code Modulation), i.e. Pulse Code modulation, which refers to the analog audio signal only after sampling, modulus are converted to PCM signal, and without any coding and compression. Normal CD sampling frequency linear PCM as 44.1kHz, quantization precision as 16bit, dynamic range, for 98db DVD linear PCM quantization precision have 16bit, 20 bit, 24 bit, sampling frequency 96 kHz into 48kHz,, dynamic range up to 114dB, sound fidelity and greater expressiveness. What is 5.1 channel? AC-3, DTS has six fully independent channels; left, right, middle, left surround, right surround five-channel, another woofer channel its bandwidth only 20HZ ~ 120HZ voice, it's band is only one other channel ten so called 0.1 channel, and the remaining five channels are 20HZ ~ 20KHZ full band, together called 5.1 channel. What is jinwa (ZiVA) decoding technology? jinwa (ZiVA) decoding technology is the United States, high jumper (C-Cube) company research and development of next-generation M P E G Ⅱ audio and video decoding technology. What is PDVD (Progressive DVD)? PDVD also known as progressive scan DVD output video signal line by line, so that the TV scan mode press (1, 2, 3, ... The order of the line) to display an image, to overcome the interlaced lines of large areas of Flash, image more delicate, stability, long time watching eyes are tired. What is a RF output terminals?, also known as RF output terminal, that is, the video and audio signals are sent with tuned in, the drawback video audio signals interfere with impact-definition, in order to resolve this problem the video output mode. What is a video output terminals?, also known as AV output terminal, that is, the video and audio signals are sent separately, video audio signals interfere with improved clarity has improved, in order to better improve clarity appears a S output. What is S output terminals? S Terminal is a dedicated video signal output interface. S Terminal is a 5-core interfaces, including both multiplexed video luminance signal, two road transport chrominance signal, all the way to a common ground, due to shielding eliminates image signal and chrominance signals C Y's comprehensive, coding, synthesis and TV within the input switch, matrix decoding and other steps to effectively prevent the luminance, chrominance signal crosstalk between composite output, improve image clarity. To constantly improve the technology is a YCbCr output mode. What is a YCbCr output terminals? that is, the video component of the color difference signal terminals, namely-Child-Y, Cb, Cr. It put the chroma (C) signal in the blue dropout (b), red (r) is sent separately, clarity is better, but it is not satisfied, to meet people's requirements for a progressive scan DVD. What is a YPbPr output terminal of a video component output one row at a time?, the chroma(C) signal in the blue dropout (b), red (r) is sent separately. What is a VGA output terminals? VGA (Video Graphic Array) output terminal, line by line output mode, the video image array, is a computer display interfaces, VGA terminal with red (R), yellow (G), blue (B) of the three primary colors and line (HS), field (VS) scan signals. What is dual decoding decodes + DVD? AC-3 DTS decoding what is 1 + 1DVD? deinterlace + AC-3 decoding DTS decoding HDCD disc + what format discs? HDCD (High Definition Compatible Digital) disc is United States California Burk's Pacific audio software HDCD technology developed by the company (high definition compatible digital). What is zoom the tiny things through? zoom to zoom in to see the view definition. (Disc support party effective) what is the point in different directions through watching the screen, the different visual effects. (Disc support party effective) what is multilingualism? meet the language requirements of different countries, to better understand the story. (Disc support party effective) what is a variety of different national titles? text request, to better understand the story. (Disc support party effective) what is the multiple screen? adapts to different screen ratio for television sets to buy TV more selective. (Disc support party effective) what is a screen-protected DVD-video signals? when screen saver starts automatically, so that the deflections of the uniform protection of TV life illuminated. Audio signal parameters comparison parameter linear PCM AC-3 and DTS
44.1KHZ 48 KHZ sampling frequency 96 KHZ
Sampling precision 16bit 20 bit 24bit
Compression ratio 12: 1-3: 1
Output channel 2 5.1 5.1 or more 3D surround? is a simulated surround sound system. Left and right channels of a stereo signal, digital signal processing, through the left, right, two-channel sound, produce three-dimensional surround sound field effect. That is, use generic dual mono to create a three dimensional feeling of surround sound field, stereo, and surround encoding type system has considerable gaps. Common have SRS, atialaizer Q-Sound, etc.