Tandem signaling is the two-step conversion of a digital signal to analog and back to digital. While there is a universal standard for analog signal transmission, digital signals may employ differing sampling rates and/or differing codecs such as AMR-Narrowband and EVRC. Such differences increase the number of errors or artifacts in the resulting signal. When speech is being transmitted, as in audio telephone calls, tandem signalling may produce unintelligible results. Tandem signaling is an important evaluation criterion in the evaluation of speech coders.
Read more about Tandem Signaling: Background, Bit-rates
Famous quotes containing the word tandem:
“The Cad is the entire epitome, the complete blossom and fruit in one, of what we are told is an age of culture. Behold him in the vélodrome as he yells insanely after his kind as they tear along on their tandem machines in a match, and then ask yourself candidly, O my reader, if any age before this in all the centuries of earth ever produced any creature so utterly low and loathsome, so physically, mentally, individually, and collectively hideous?”
—Ouida [Marie Louise De La Ramée] (1839–1908)