jitter buffer
Also called a jitter filter, a hardware device or software process that eliminates jitter caused by transmission delays in an Internet telephony (VoIP) network. As the jitter buffer receives voice packets, it adds small amounts of delay to the packets so that all of the packets appear to have been received without delays. Voice signals are sequential by nature (i.e., they must be played back in the order in which they were sent) and the jitter buffer ensures that the received packets are in the correct order. Without a jitter buffer to smooth the transmission, data can be lost, resulting in choppy audio signals.
There are two types of jitter buffers – dynamic and static. A static jitter buffer is hardware-based and configured by the manufacturer. A software-based jitter buffer is called a dynamic jitter buffer and can be configured by the system or network administrator.
Read Also:
- jitter buster
A device, such as Monarchy Audio’s Digital Interface Processor, (www.monarchyaudio.com) that seeks to suppress jitters, or flickering signals, in audio transmissions.
- job
A task performed by a computer system. For example, printing a file is a job. Jobs can be performed by a single program or by a collection of programs.
- join
In relational databases, a join operation matches records in two tables. The two tables must be joined by at least one common field. That is, the join field is a member of both tables. Typically, a join operation is part of a SELECT query.
- journaled file system
A file system in which the hard disk maintains data integrity in the event of a system crash or if the system is otherwise halted abnormally. The journaled file system (JFS) maintains a log, or journal, of what activity has taken place in the main data areas of the disk; if a crash occurs, any […]
- Joystick
)A lever that moves in all directions and controls the movement of a pointer or some other display symbol. A joystick is similar to a mouse, except that with a mouse the cursor stops moving as soon as you stop moving the mouse. With a joystick, the pointer continues moving in the direction the joystick […]