AAC (Advanced Audio Coding): Advanced audio coding. AAC is the audio file format specified by i-mode. Compared with the MP3 format, AAC has an absolute advantage in the quality of the original sound and compression efficiency. As the core specification of MPEG 4 and 3GPP, AAC is also a part of MPEG specification. AAC can truly present high-quality original stereo sound, closer to CD sound quality, and can achieve a high compression rate, which can help reduce a lot of storage space, and the file is much smaller than the MP3 format.
AAC_LC (Low Complexity AAC): Low complexity AAC audio coding.
ABR (Average Bit Rate): average bit rate, an encoding method, is a combination of CBR and VBR encoding methods, it supports BR (Bit Reservoir, bit storage) technology, in the case of a small amount of information to reduce the bit rate, the redundant The amount of available data is stored in Bit Reservoir, and then extracted from Bit Reservoir when the amount of information is large, thus combining the advantages of CBR and VBR.
AC3 (Audio Coding3): Audio Coding 3, namely Dolby Digital.
ADSL (Asymmetrical Digital Subscriber Looper): Asymmetrical Digital Subscriber Looper.
AGP (Accelerate Graphical Port): accelerated graphics interface.
AVC (Advanced Video Coding): MEPG-4 Part10, also known as H.264 (ITU).
AVS――
AVS (AdvancedAudio-VideoCoding/DecodingStandard) is the English abbreviation for digital audio and video coding and decoding technology standards. The AVS standard includes four main technical standards such as system, video, audio, and digital rights management, and supporting standards such as conformance testing. Its core is to compress digital video and audio data to a few tenths or even less than one percent of the original, trying to solve the problem of encoding and compressing massive digital audio and video data, so it is also called digital audio and video coding and decoding technology. It is a prerequisite for digital information transmission, storage, playback, etc., so AVS has become a common basic standard for the digital audio and video industry.
Analog Signal: Analog signal.
ASP (Advanced Simple Profile): Advanced Simple Profile
ASF (Advanced Streaming Format): Advanced Streaming Format, a Microsoft media format.
ATM (Asynchronous Transfer Mode): Asynchronous transfer mode.
ATA (Advanced Technology Attachment): An IDE drive interface specification formulated by some software and hardware manufacturers in the 1980s.
AVI (Audio Video Interlaced): Interlaced audio and video, a Microsoft media packaging method
Authentication: Authentication, a secure communication method.
B
bit rate: bit rate, the bit rate/code rate of the compressed bit stream transmitted from the channel to the input of the decoder.
Byte: Byte 1Byte=8bit
C
CA (Condition Access): Conditional access.
CABAC (Content-Adaptive Binary Arithmetic Coding): Before and after adaptive binary arithmetic coding, it reduces coding damage by 10~15% compared with CAVLC, but at the cost of coding speed.
CAVLC (Content-Adaptive Variable Length Coding): Before and after adaptive variable length coding.
CBR (Constant Bit Rate): a fixed bit rate, an encoding method that uses a fixed bit rate regardless of the amount of information, which will make the sound quality of the part with more information not guaranteed, and the part with less information will be occupied The large amount of data causes waste.
CDN (Content Delivery Network): Content Delivery Network, its principle is to enable most customers to access the nearby cache server to obtain the required content by publishing the content of the website to the cache server closest to the user, so as to solve the Internet network congestion. Improve the response speed of users visiting the website, just like providing multiple cloned sites distributed in various places.
Chrominance(chroma): Chrominance, the color information of the video signal
CI (Common Interface): Common interface.
CM (Cable Modem): cable modem.
CMTS (Cable Modem Temination System): Cable Modem terminal system.
Cable Router: cable router
CVBS (Composite Video Broadcast Signal): composite video output
D
DAR (Display Aspect Ratio): Display aspect ratio.
Deinterlace: The process of restoring an interlaced video stream to progressive is called deinterlacing.
DHCP (Dynamic Host Configuration Protocol): Dynamic Host Configuration Protocol, which helps the system to automatically configure the network IP address.
DNS (Domain Name System): The domain name system, interprets the host name as an IP address (forward), or interprets IP as a host name (reverse).
DRC (Dynamic Range Compression): dynamic range compression.
DRM (Digital Right Manager): Digital Rights Management. DRM technology uses encrypted digital content and additional information to determine whether a user has the right to use the content, so as to ensure that the content is only available to authorized users. The basic principles of DRM are simplicity, flexibility and openness. The biggest challenge for DRM in the future lies in interoperability.
DSL (Digital Subscriber Loop): Digital Subscriber Loop.
DSLAM (Digital Subscriber Line Access Multiplexer): Multi-channel digital subscriber line access.
DSP (digital singnal processor): It is a unique microprocessor, a device that processes a large amount of information with digital signals, and has powerful data processing capabilities and high operating speed.
DVB (Digital Video Broadcasting): Digital video broadcasting.
DVI (Digital Visual Interface): Digital Video Interface
E
EPG (Electronic Program Guide): Electronic Program Guide
F
Field: Field, interlaced video streams (Interlaced video streams) contain fields instead of frames.
Frame: Frame, the basic unit of the movie, a frame represents an image. Usually there are B, P, I frames.
Fps (frame per second): Frame rate, usually expressed by the number of frames played per second, generally 30fps for NTSC and 25fps for PAL.
FTP (File Transport Protocol): file transfer protocol
G
GIF (Graphics Interchange Format): Graphics Interchange Format
H
HFC (Hytrid fiber cable): It is a hybrid network of optical network and coaxial cable, usually refers to a cable TV network.
HDMI (High Definition Multimedia Interface): High-definition multimedia interface.
HDTV (High Definition Television): High Definition Television.
HTTP (Hypertext Transfer Protocol): Hypertext Transfer Protocol, a standard protocol for transferring Web pages on the Internet.
HUB: Hub, a connecting device that connects multiple computers or other devices in a computer network. It is the smallest unit for centralized management of the network.
HTML (Hyper Text Markup Language)
I
IDE (Integrated Drive Electronics): Electronic integrated drive.
IGMP (Internet Group Management Protocol): Internet Group Management Protocol.
IIS (IIS Internet Integrated service): Web server that allows information to be published on the public Intranet or the Internet.
Interlaced: Interlaced scanning is a video storage mode. An interlaced video stream does not contain frames but some fields. Each field contains half the number of lines in a frame (all odd or all even).
IPTV (Internet Protocol TV or Interactive Personal TV): Internet Protocol TV or Personal Interactive TV.
ISDN (Integrated Service Digital Network): Integrated Service Digital Network, commonly known as "one-line communication".
ISMA (Internet Streaming Media Alliance): Internet Streaming Media Alliance.
ISO (International Organization for Standardization)
ITU (International Telecommunication Union)
ITU -T (ITU Telecommunication Standardization Sector)
J
JVT (Joint Video Team): Video Joint Working Group
M
MAC (Media Access Control): Media Access Control.
MDS (Multi-Point Distribution System): Multi-point broadcast television.
MGCP (Media Gateway Control Protocol): Media Gateway Control Protocol.
MIDI (Musical Instrument Digital Interface)
MPEG (Motion Picture Expert Group): means Motion Picture Expert Group, usually it is the source of the video format. Currently, MPEG-1, MPEG-2, MPEG-4 and other standards have been released.
MP3 (MPEG-1 Layer3): A common audio format.
MPLS (Multi Protocol Label Switch): Multi-protocol label switching.
Multicast: Multicast.
MPEG-4 "Moving Picture Experts Group (MPEG) officially announced the first version of the MPEG-4 (ISO/IEC14496) standard in February 1999. At the end of the same year, the second edition of MPEG-4 was completed and officially became an international standard in early 2000. MPEG-4 generally mentioned now refers to the second edition of MPEG-4. When MPEG-4 encodes high-definition quality IPTV programs, the usual encoding rate is between 768kbit/s and 2Mbit/s. Audio coding usually adopts MP3 or AAC coding, and the data rate is between 64kbit/s and 128kbit/s. When using AAC encoding, the typical bitstream is 96kbit/s, and the audio quality exceeds 128kbit/s for MP3 encoding.
N
NPVR (Network Personal Video Recorder): Personal network video recording.
NTP (Network Time Protocol): Network Time Protocol.
NTSC (National Television Standards Committee): The National Television Standards Committee of the United States is a common television system in North and Central America and Japan. It has a vertical resolution of 525 lines and a frame rate of 30 (29.97) FPS.
NVOD (near VOD): quasi video on demand.
NFS (Network File System)
O
OSD (On Screen Display): Generally refers to the small interface displayed on the screen.
P
PAL (Phase Alternating Line): German design, phase alternate line system. It is a common TV system in China and most European countries. It has a higher vertical resolution (625 lines), but the frame rate is relatively slower than NTSC (25FPS).
PCI (Peripheral Component Interconnect): Peripheral component interconnection standard.
PCI-E(Peripheral Component Interconnect Express): A new generation of PCI bus interface.
PCM (Pulse Code Modulation): Pulse code modulation.
PDP (Plasma Display Panel): Plasma display panel.
Pixel: Pixel.
PNG (Portable Network Graphic): Portable network graphics, lossless compression.
POP (Post Office Protocol)
PPP (Point to Point Protocol): Point to Point Protocol.
PPPoE (Point to Point Protocol over Ethernet): Ethernet point-to-point protocol.
Progressive: Progressive scan, as opposed to interlaced. A video stream containing only full frames (frames) is considered to be scanned progressively.
PVR (Personal Video Recorder): Personal video recording.
Q
QAM (Quadrature Amplitude Modulation): Quadrature amplitude modulation.
QoS (Quality of Service): It is the quality of service management, which is the main key testing technology for broadband IP networks.
QPSK (Quaternary Phase Shift Keying): Four phase shift keying modulation.
R
RF (Radio Frequency): Radio frequency.
RJ (Registered Jack): RJ45 (network cable) and RJ11 (phone cable) are common.
Router: Router.
RSVP (Resource ReSerVation Protocol): Resource reservation protocol is a protocol for quality integration services on the Internet.
RTP (Real-time Transport Protocol): The real-time transport protocol is defined to work in one-to-one or one-to-many transmission. Its purpose is to provide time information and achieve stream synchronization. RTP usually uses UDP to transmit data. It can work on other protocols such as TCP or ATM.
RTCP (Real-time Transport Control Protocol): Real-time Transport Control Protocol, which provides flow control and congestion control services together with RTP. During the RTP session, each participant periodically transmits RTCP packets. The RTCP packet contains statistical data such as the number of sent data packets and the number of lost data packets.
RTSP (Real-time Transport Streaming Protocol): Real-time Transport Streaming Protocol, jointly proposed by RealNetworks and Netscape, this protocol defines how one-to-many applications can effectively transmit multimedia data through an IP network. RTSP is located above RTP and RTCP in terms of architecture. It uses TCP or RTP to complete data transmission and can be bidirectional.
S
SAP (Session Announcemount Protocol): Session Announcemount Protocol.
SATA (Serial ATA): Serial ATA.
SCSI (Small Computer System Interface): A dedicated interface for small computer systems.
SDK (Software Development Kit): software development kit.
SDP (Session Description Protocol): The session description protocol describes the content of a multimedia session.
SDSL (Symmetry Digital Subscriber Line): Symmetric digital subscriber line.
SECAM: Also known as sequential color TV memory, it is a TV system adopted by France, Russia, and some Eastern European and African countries. It has the same vertical resolution and frame rate as the PAL system,
But the color set by SECAM is modulated by FM signal.
SIP (Session Initiation Protocol): Session initiation protocol.
SLBP (Streaming Load Balance Protocol): Load balancing management protocol.
SMTP (Simple Message Transfer Protocol): Simple Mail Transfer Protocol.
SP (Simple Profile): Simple layer.
SPDIF (Sony/Philips Digital Interface): Sony/Philips Digital Interface.
SSL (Security Socket Layer): Encrypted socket protocol layer.
STB (Set Top Box): Set Top Box.
S-Video (Separate Video): Super Video, S-Video.
SVOD (Subscription Video On Demand): Subscriber video on demand.
Switch: Switch, a kind of network equipment based on MAC (hardware address of network card) identification, which can complete the function of encapsulating and forwarding data packets.
T
TCP (Transmission Control Protocol): Transmission Control Protocol.
TeleText: Teletext.
TFTP (Trivial File Transfer Protocol): Simple file transfer protocol.
Time-Shifted TV: Time-Shifted TV.
TTL (Time to Live): life cycle.
TVOD (True VOD): What we usually call VOD.
Throughput: Throughput, the nominal speed at which the hard disk continuously transmits data.
U
UDP (User Datagram Protocol): User Datagram Protocol.
Unicast: Unicast.
URL (Uniform Resource Locator): Uniform Resource Locator.
USB (Universal Serial Bus): Universal Serial Bus.
V
VBR (Variable Bit Rate): Variable bit rate, an encoding method that dynamically adjusts the bit rate according to the amount of information. It is possible to encode both audio and video in VBR mode, and the bit rate in the entire file will not be Fixed, the more complex parts of the video/audio will use a higher bit rate to get a better visual/auditory experience, while the other parts will get a lower bit rate.
Vertical Blanking: Frame blanking.
VGA (Video Graphics Array): Video graphics array.
VoIP (Voice Over IP): IP phone.
VOD (Video On Demand): video on demand.
VPN (Virtual Private): Personal virtual network.
VTS is the abbreviation of Video Title Set, which means it is a collection of a series of VOB files and corresponding IFO and BUP files.
VC-1 Microsoft submitted the VC-1 encoding format (development code Corona) in September 2003, and has been adopted by many companies such as MovieBeam, Modeo, etc.
(Modeo provides real-time TV streaming services for mobile devices such as mobile phones), which is also included in HD DVD and Blu-ray,
VC-1 is based on the Microsoft Windows Media Video 9 (WMV9) format, and the WMV9 format has now become the actual implementation part of the VC-1 standard.
W
WMT (Windows Media Technology) is an information streaming program proposed by Microsoft. Its main purpose is to realize the transmission of multimedia streaming information including audio and video information on the Internet and Intranet.
WMV (Windows Media Video) is the primary codec of Microsoft video technology. It has been developed to version 9. It is derived from MPEG-4. Several proprietary extensions make it possible to provide better images at a given bit rate. Quality, can support True-VBR (true dynamic variable rate coding,
Can guarantee the quality of the image during the download process) and Two-Pass encoding technology. WMA (Windows Media Audio)
It is the primary codec for Microsoft audio technology, and the codec is similar to MP3.
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How far(long) the transmitter cover?
The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.
EXAMPLE 5W FM Transmitter use in the city and hometown:
I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).
I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).
I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).
Below are the approximate range of different power FM Transmitters. ( The range is diameter )
0.1W ~ 5W FM Transmitter ：100M ~1KM
5W ~15W FM Ttransmitter : 1KM ~ 3KM
15W ~ 80W FM Transmitter : 3KM ~10KM
80W ~500W FM Transmitter : 10KM ~30KM
500W ~1000W FM Transmitter : 30KM ~ 50KM
1KW ~ 2KW FM Transmitter : 50KM ~100KM
2KW ~5KW FM Transmitter : 100KM ~150KM
5KW ~10KW FM Transmitter : 150KM ~200KM
How to contact us for the transmitter?
Call me +8618078869184 OR
Email me [email protected]
1.How far you want to cover in diameter ?
2.How tall of you tower ?
3.Where are you from ?
And we will give you more professional advice.
About Us
FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.
We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.
Our solution has FM Radio Station / Analog TV Station / Digital TV Station / Audio Video Studio Equipment / Studio Transmitter Link / Transmitter Telemetry System / Hotel TV System / IPTV Live Broadcasting / Streaming Live Broadcast / Video Conference / CATV Broadcasting system.
We are using advanced technology products for all the systems, because we know the high reliability and high performance are so important for the system and solution . At the same time we also have to make sure our products system with a very reasonable price.
We have customers of public and commercial broadcasters, telecom operators and regulation authorities , and we also offer solution and products to many hundreds of smaller, local and community broadcasters .
FMUSER.ORG has been exporting more than 15 years and have clients all over the world. With 13 years experience in this field ,we have a professional team to solve customer's all kinds of problems. We dedicated in supplying the extremely reasonable pricing of professional products & services. Contact email : [email protected]
Our Factory
We have modernization of the factory . You are welcome to visit our factory when you come to China.
At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us .
At Fair
This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.
Where is Fmuser ?
You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .
FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .
Contact: Sky Blue
Cellphone: +8618078869184
WhatsApp: +8618078869184
Wechat: +8618078869184
E-mail: [email protected]
QQ: 727926717
Skype: sky198710021
Address: No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China Zip:510620
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English: We accept all payments , such as PayPal, Credit Card, Western Union, Alipay, Money Bookers, T/T, LC, DP, DA, OA, Payoneer, If you have any question , please contact me [email protected] or WhatsApp +8618078869184
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PayPal.  www.paypal.com
We recommend you use Paypal to buy our items ,The Paypal is a secure way to buy on internet .
Every of our item list page bottom on top have a paypal logo to pay.
Credit Card.If you do not have paypal,but you have credit card,you also can click the Yellow PayPal button to pay with your credit card.
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But if you have not a credit card and not have a paypal account or difficult to got a paypal accout ,You can use the following:
Western Union.  www.westernunion.com
Pay by Western Union to me :
First name/Given name: Yingfeng
Last name/Surname/ Family name: Zhang
Full name: Yingfeng Zhang
Country: China
City: Guangzhou
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T/T . Pay by T/T (wire transfer/ Telegraphic Transfer/ Bank Transfer)
First BANK INFORMATION (COMPANY ACCOUNT):
SWIFT BIC: BKCHHKHHXXX
Bank name: BANK OF CHINA (HONG KONG) LIMITED, HONG KONG
Bank Address: BANK OF CHINA TOWER, 1 GARDEN ROAD, CENTRAL, HONG KONG
BANK CODE: 012
Account Name : FMUSER INTERNATIONAL GROUP LIMITED
Account NO. : 012-676-2-007855-0
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Second BANK INFORMATION (COMPANY ACCOUNT):
Beneficiary: Fmuser International Group Inc
Account Number: 44050158090900000337
Beneficiary's Bank: China Construction Bank Guangdong Branch
SWIFT Code: PCBCCNBJGDX
Address: NO.553 Tianhe Road, Guangzhou, Guangdong,Tianhe District, China
**Note: When you transfer money to our bank account, please DO NOT write anything in the remark area, otherwise we won't be able to receive the payment due to government policy on international trade business.
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* It will be sent in 1-2 working days when payment clear.
* We will send it to your paypal address. If you want to change address, please send your correct address and phone number to my email [email protected]
* If the packages is below 2kg,we will be shipped via post airmail, it will take about 15-25days to your hand.
If the package is more than 2kg,we will ship via EMS , DHL , UPS, Fedex fast express delivery,it will take about 7~15days to your hand.
If the package more than 100kg , we will send via DHL or air freight. It will take about 3~7days to your hand.
All the packages are form China guangzhou.
* Package will be sent as a "gift" and declear as less as possible,buyer don't need to pay for "TAX".
* After ship, we will send you an E-mail and give you the tracking number.
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For Warranty .
Contact US--->>Return the item to us--->>Receive and send another replace .
Name: Liu xiaoxia
Address: 305Fang HuiLanGe HuangPuDaDaoXi 273Hao TianHeQu Guangzhou China.
ZIP:510620
Phone: +8618078869184
Please return to this address and write your paypal address,name,problem on note: |
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