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bit rate

   Also found in: Acronyms, Wikipedia 0.06 sec.

The transmission speed of binary coded data. Same as data rate. See bit time.

(communications, digital signal processing)bit rate - (Or "bitrate") A data rate expressed in bits per second. This is a similar to baud but the latter is more applicable to channels with more than two states.

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

The term is also commonly used when discussing digital sampling and sample rates. For example, the MP3 audio compaction algorithm is often set to ouput files with a bitrate of 120 kbps. This means that the file contains an average of 120 kilobits for each second of audio (900 KB per minute). This compares with CD audio which is encoded at 44100 16-bit stereo samples per second or 1408 kbps.
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In addition, the encoding technology integrated into XCode II can process video frame information with much better quality and at a lower bit rate than previous processors.
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Operating on top of any core audio codec such as AAC, HE-AAC and MPEG-1 Layer II, the system provides an unrivalled set of features including full backward compatibility to stereo equipment and a wide scalability in terms of bit rate used for describing the surround sound image.
MPEG Surround Becomes International Standard by Business Wire
The granted patent covers a method for transmitting multimedia packets over a packet switch network, by dynamically changing the bit rate based on bandwidth availability.
VocalTec Communications Announces a US Patent Grant Covering Method ... by Business Wire
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