bit rate

[′bit ‚rāt] (communications) Quantity, per unit time, of binary digits (or pulses representing them) which will pass a given point on a communications line or channel in a continuous stream.

bit rate

(communications, digital signal processing)(Or "bitrate") Adata rate expressed in bits per second. This is a similarto baud but the latter is more applicable to channels withmore than two states.

The common units of bit rate are kilobits per second (Kbps)and megabits per second (Mbps). In data rates, themultipliers "k", "M", etc. stand for powers of 1000 not powersof 1024.

The term is also commonly used when discussing digitalsampling and sample rates. For example, the MP3 audiocompaction algorithm is often set to ouput files with abitrate of 120 kbps. This means that the file contains anaverage of 120 kilobits for each second of audio (900 KB perminute). This compares with CD audio which is encoded at44100 16-bit stereo samples per second or 1408 kbps.

bit rate

(1) See data rate.

(2) The speed that digital audio and video files are encoded (compressed), measured in kilobits (Kb) and megabits (Mb) per second. For example, MP3 audio files can be created with bit rates from 16 Kbps to 320 Kbps, with 128 Kbps being fairly common. Video formats also run the gamut, from as little as 10 Mbps for preview frames to 400 Mbps and higher for HD.

The higher the bit rate, the less compression and the better the audio or video quality. It is sometimes extremely difficult to hear or see the difference unless comparing content with bit rates that are far apart. See space/time.

单词	bit rate
释义	bit rate bit rate n (Computer Science) computing the rate of flow of binary digits in a digital data-processing system, usually expressed as the number of bits per second bit rate bit rate [′bit ‚rāt] (communications) Quantity, per unit time, of binary digits (or pulses representing them) which will pass a given point on a communications line or channel in a continuous stream. bit rate (communications, digital signal processing)(Or "bitrate") Adata rate expressed in bits per second. This is a similarto baud but the latter is more applicable to channels withmore than two states. The common units of bit rate are kilobits per second (Kbps)and megabits per second (Mbps). In data rates, themultipliers "k", "M", etc. stand for powers of 1000 not powersof 1024. The term is also commonly used when discussing digitalsampling and sample rates. For example, the MP3 audiocompaction algorithm is often set to ouput files with abitrate of 120 kbps. This means that the file contains anaverage of 120 kilobits for each second of audio (900 KB perminute). This compares with CD audio which is encoded at44100 16-bit stereo samples per second or 1408 kbps. bit rate (1) See data rate. (2) The speed that digital audio and video files are encoded (compressed), measured in kilobits (Kb) and megabits (Mb) per second. For example, MP3 audio files can be created with bit rates from 16 Kbps to 320 Kbps, with 128 Kbps being fairly common. Video formats also run the gamut, from as little as 10 Mbps for preview frames to 400 Mbps and higher for HD. The higher the bit rate, the less compression and the better the audio or video quality. It is sometimes extremely difficult to hear or see the difference unless comparing content with bit rates that are far apart. See space/time. EncyclopediaSeeb/rThesaurusSeedata rate
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