Audio Repeater allows you to transfer (copy) sounds from an input (recording) audio endpoint/device to an output (playback) one. Audio transfer can be performed in any PCM audio format supported by Windows.
MME version works through Windows Core Audio Subsystem that shares every audio endpoint among any number of audio applications. You can run several Audio Repeater instances to copy sounds from a single recording endpoint, or to mix sounds to a single playback endpoint, or combine copy/mix operations. However, due to multi-level buffering, this version adds a noticeable (dozens or even hundreds of milliseconds) latency.
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KS version communicates directly with audio driver, bypassing all additional Windows audio processing. Therefore, this version allows you to achieve best performance and lowest latency, but most audio drivers support only a single client application. It means that if the endpoint is used by Windows Audio Subsystem, it cannot be accessed by the Repeater, and vice versa.
Audio Repeater allows you to transfer audio samples from one device to another with DSP processing support. For an instance, let's say you have Bluetooth headset & you want to listen to the audio output of your PC through the headset. Then you can use this tool to accomplish that task with minimum amount of latency.
Please change Buffer Count & Buffer Size if you hear gaps in the audio stream. When changing those values make sure to put right values according to the tutorial. These values are heavily depending on the soundcard & the performance of your PC.
Audio Repeater uses first DSP module when using it with Winamp DSP plug-in. This feature will allow you to use this tool as a real-time audio effect processor. Also, you can use Virtual Audio Cables if you want to apply DSP effects to the entire system. (Tested with Virtual Audio Cable v4.09)
Audio Repeater is a portable program that allows you to easily move audio samples from one device to another. An important feature of the application is that it can be used by users who do not have any additional knowledge. The process of moving is very simple and intuitive. The user will only need to specify the input and output devices as well as the buffer size. The rest of the program will be done by yourself.
An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. Many repeaters are located on hilltops or on tall buildings as the higher location increases their coverage area, sometimes referred to as the radio horizon, or "footprint". Amateur radio repeaters are similar in concept to those used by public safety entities (police, fire department, etc.), businesses, government, military, and more. Amateur radio repeaters may even use commercially packaged repeater systems that have been adjusted to operate within amateur radio frequency bands, but more often amateur repeaters are assembled from receivers, transmitters, controllers, power supplies, antennas, and other components, from various sources.
In amateur radio, repeaters are typically maintained by individual hobbyists or local groups of amateur radio operators. Many repeaters are provided openly to other amateur radio operators and typically not used as a remote base station by a single user or group. In some areas multiple repeaters are linked together to form a wide-coverage network, such as the linked system provided by the Independent Repeater Association[1] which covers most of western Michigan, or the Western Intertie Network System ("WINsystem") that now covers a great deal of California, and is in 17 other states, including Hawaii, along with parts of four other countries, Australia, Canada, Great Britain and Japan.[2]
Repeater frequency sets are known as "repeater pairs", and in the ham radio community most follow ad hoc standards for the difference between the two frequencies, commonly called the offset. In the USA two-meter band, the standard offset is 600 kHz (0.6 MHz), but sometimes unusual offsets, referred to as oddball splits, are used. The actual frequency pair used is assigned by a local frequency coordinating council.
In the days of crystal-controlled radios, these pairs were identified by the last portion of the transmit (Input) frequency followed by the last portion of the receive (Output) frequency that the ham would put into the radio. Thus "three-four nine-four" (34/94) meant that hams would transmit on 146.34 MHz and listen on 146.94 MHz (while the repeater would do the opposite, listening on 146.34 and transmitting on 146.94). In areas with many repeaters, "reverse splits" were common (i.e., 94/34), to prevent interference between systems.
Services provided by a repeater may include an autopatch connection to a POTS/PSTN telephone line to allow users to make telephone calls from their keypad-equipped radios. These advanced services may be limited to members of the group or club that maintains the repeater. Many amateur radio repeaters typically have a tone access control (CTCSS, also called CG or PL tone) implemented to prevent them from being keyed-up (operated) accidentally by interference from other radio signals. A few use a digital code system called DCS, DCG or DPL (a Motorola trademark). In the UK most repeaters also respond to a short burst of 1750 Hz tone to open the repeater.
In many communities, a repeater has become a major on-the-air gathering spot for the local amateur radio community, especially during "drive time" (the morning or afternoon commuting time). In the evenings local public service nets may be heard on these systems and many repeaters are used by weather spotters. In an emergency or a disaster a repeater can sometimes help to provide needed communications between areas that could not otherwise communicate. Until cellular telephones became popular, it was common for community repeaters to have "drive time" monitoring stations so that mobile amateurs could call in traffic accidents via the repeater to the monitoring station who could relay it to the local police agencies via telephone. Systems with autopatches frequently had (and still have) most of the public safety agencies numbers programmed as speed-dial numbers.
The purpose of coordinating a repeater or frequency is to reduce harmful interference to other fixed operations. Coordinating a repeater or frequency with other fixed operations demonstrates good engineering and amateur practice.
In the UK, the frequency allocations for repeaters are managed by the Emerging Technology Co-ordination Committee (ETCC)[3] of the Radio Society of Great Britain and licensed by Ofcom, the industry regulator for communications in the UK. Each repeater has a NOV (Notice of Variation) licence issued to a particular amateur radio callsign (this person is normally known as the "repeater keeper") thus ensuring the licensing authority has a single point of contact for that particular repeater.
The most basic repeater consists of an FM receiver on one frequency and an FM transmitter on another frequency usually in the same radio band, connected together so that when the receiver picks up a signal, the transmitter is keyed and rebroadcasts whatever is heard.
Conventional repeaters, also known as in-band or same-band repeaters, retransmit signals within the same frequency band, and they only repeat signals using a particular modulation scheme, predominately FM.
Standard repeaters require either the use of two antennas (one each for transmitter and receiver) or a duplexer to isolate the transmit and receive signals over a single antenna. The duplexer is a device which prevents the repeater's high-power transmitter (on the output frequency) from drowning out the users' signal on the repeater receiver (on the input frequency). A diplexer allows two transmitters on different frequencies to use one antenna, and is common in installations where one repeater on 2 m and a second on 440 MHz share one feedline up the tower and one antenna.
A cross-band repeater (also sometimes called a replexer), is a repeater that retransmits a specific mode on a frequency in one band to a specific mode on a frequency in a different band. This technique allows for a smaller and less complex repeater system. Repeating signals across widely separated frequency bands allows for simple filters to be used to allow one antenna to be used for both transmit and receive at the same time. This avoids the use of complex duplexers to achieve the required rejection for same band repeating.
Amateur television (ATV) repeaters are used by amateur radio operators to transmit full motion video. The bands used by ATV repeaters vary by country, but in the US a typical configuration is as a cross-band system with an input on the 33 or 23 cm band and output on 421.25 MHz or, sometimes, 426.25 MHz (within the 70 cm band). These output frequencies happen to be the same as standard cable television channels 57 and 58, meaning that anyone with a cable-ready analog NTSC TV can tune them in without special equipment.
There are also digital amateur TV repeaters that retransmit digital video signals. Frequently DVB-S modulation is used for digital ATV, due to narrow bandwidth needs and high loss tolerances. These DATV repeaters are more prevalent in Europe currently, partially because of the availability of DVB-S equipment.
In addition, amateur radio satellites have been launched with the specific purpose of operating as space-borne amateur repeaters. The worldwide amateur satellite organization AMSAT designs and builds many of the amateur satellites, which are also known as OSCARs. Several satellites with amateur radio equipment on board have been designed and built by universities around the world. Also, several OSCARs have been built for experimentation. For example, NASA and AMSAT coordinated the release of SuitSat which was an attempt to make a low cost experimental satellite from a discarded Russian spacesuit outfitted with amateur radio equipment. e24fc04721
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