Secondary signal paired with another the primary signal on the main carrier. For example, in satellite television transmission, the video picture is transmitted over the main carrier, and the corresponding audio is sent via an FM subcarrier. Some satellite transponders carry as many as four special audio or data subcarriers whose signals may or may not be related to the main programming.
This is a second signal that "rides" on the main signal with the purpose of carrying additional information. In satellite TV transmissions, for example, the video is transmitted by the main carrier signal, and the audio information is relayed by an FM subcarrier.
Secondary carrier sent within a radio channel carrying either supplemental information to the main signal or totally separate programming or data. Stereo sound is sent on a subcarrier and when it is part of a TV signal it is called MTS stereo. A TV subcarrier with a totally different audio source from the main TV channel is called a Secondary Audio Program (SAP). According to ECPA, subcarriers may not be monitored without the permission of the sender.
Any signal carrying information that is transmitted within the bandwidth of another signal which itself modulates a carrier. Used in analogue TV transmission systems, for example, to convey colour and audio information.
A secondary tone or carrier which modulates a primary carrier. The subcarrier frequency is normally above the audio range, and may itself be modulated to transmit audio or other information.
A smaller bandwidth channel modulated on to the main channel to add information (like audio), perform a function (burst) or act as a reference.
A signal that is transmitted within the bandwidth of a stronger signal.
A signal which carries information imposed on a baseband and presented to a modulator
A subsidiary carrier waveform, itself, modulated by an information signal, which is, together with other signals, modulated on the main carrier waveform.
Modulation applied to a carrier which is itself modulated with information-carrying variations.
A portion of a video signal that carries a specific signal, such as color. See color subcarrier.
An inaudible portion of the broadcast signal that is added to the program signal of the FM or TV sound.
A second signal "piggybacked" onto a main signal to carry additional information. In satellite television transmission, the video picture is transmitted over the main carrier. The corresponding audio is sent via an FM subcarrier. Some satellite transponders carry as many as four special audio or data subcarriers whose signals may or may not be related to the main programming.
In the television system, a main carrier at some radio frequency is modulated with luminance information. A second carrier or subcarrier is modulated with chrominance information. In PAL colour systems this subcarrier is 4.43 Mhz higher than the main carrier. Even in a baseband signal, the colour information is represented by a 4.43 Mhz signal and is still referred to as a subcarrier.
A second signal "piggybacked" onto a main signal to carry additional information. In satellite television transmission, the video picture is transmitted over the main carrier. The corresponding audio is sent via an FM sub-carrier. See also: Audio Subcarrier
In compositing, that part of the composite video signal, generated by the sync generator, that maintains the color phase (hue) in non-component video. Usually the subcarrier is handled automatically, but some devices will require a separate subcarrier signal with a sync signal.
A subcarrier is separate analog or digital signal carried on a main radio transmission, which carries extra information such as voice or data. More technically, it is an already-modulated signal, which is then modulated into another signal of higher frequency and bandwidth. This is an early and simple method of multiplexing.
