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:
“We are bare. We are stripped to the bone
and we swim in tandem and go up and up
the river, the identical river called Mine
and we enter together. No one’s alone.”
—Anne Sexton (1928–1974)