Search Keyword By: delay
A device that introduces a delay in the propagation of an electrical signal by (a) employing a transducer to convert the signal into an acoustic wave, (b) propagating the acoustic wave through a medium such as a column of mercury or a carbon or ferrite rod, and (c) by means of another transducer, converting the acoustic wave back to an electrical signal. Note: An acoustic delay line may be used for temporary storage of information, e.g., a digital data stream.
The maximum variable transmission and processing delay that is permitted in a wideband network. Each PVP (packetized voice protocol) node records the delay that it adds and updates accordingly the TS (time stamp) value in the packet header. When the terminating endpoint of a PVP node receives a voice packet, the provisioned build-out and the time stamp value are compared. If the TS value is larger than the build-out, the PVP node drops the packet. If the delay is less than the provisioned build-out, the packet is delayed by the difference between the two values. [T1.312-1991]
The amount of time by which an event is retarded. 2. The time between the instant at which a given event occurs and the instant at which a related aspect of that event occurs. Note 1: The events, relationships, and aspects of the entity being delayed must be precisely specified. Note 2: Total delay may be demonstrated by the impulse response of a device or system. Note 3: In analog systems, total delay is described in terms of the transfer functions in the frequency domain. Synonym delay time. 3. In radar, the electronic delay of the start of the time base used to select a particular segment of the total.
In a waveform consisting of two or more wave components at different frequencies, distortion caused by the difference in arrival times of the frequency components at the output of a transmission system. Synonymtime-delay distortion.
The encoding of binary data to form a two-level signal such that (a) a “0” causes no change of signal level unless it is followed by another “0” in which case a transition to the other level takes place at the end of the first bit period; and (b) a “1” causes a transition from one level to the other in the middle of the bit period. Note: Delay encoding is used primarily for encoding radio signals because the frequency spectrum of the encoded signal contains less low-frequency energy than a conventional non-return-to-zero (NRZ) signal and less high-frequency energy than a biphase signal.