Voice digitization scheme that samples an analog voice signal 8000 times per second and converts each sample to an 8-bit code, yielding a digital voice rate of 64 kbps, allowing 30 timeslots on a 2-Mbps line; defined in ITU (ex-CCITT) Recommendation G.711.
Common form of transferring analog information into digital signals by representing analog waveforms with a stream of digital bits forming words that relate the amplitude of a signal at a certain point (the sample). The word length used, the number of bits used to represent the amplitude of a sample is a determinant in the quality of reproduction along with the sampling rate (the number of samples taken per second). The word length used for standard CDs is 16 bits meaning that each amplitude is represented by a string of 16 ones and zeroes. Higher quality formats use 20 bit and 24 bit word lengths. A 20 bit word breaks up the height into 1,048,576 pieces, about 16 times more resolution that a 16 bit word (with 65,553 pieces). A 24-bit word breaks the amplitude up into 16,777,216 pieces, about 256 times the information of a 16-bit word.