Rega DAC-R Specifications download pdf (Page 14)

Glossary of terms

ASYNCHRONOUS

An asynchronous USB DAC uses its own clock to regulate the

data rate from the computer, which allows for jitter-free data transfer

PLL

Phase lock loop

PCM

Pulse code modulation

SPDIF

Sony Philips digital interface protocol

SOFT MUTE

Software mute (not output mute)

SOFT KNEE FILTER

Filter with a large transition band which reduces dispersion and delay

HALF BAND

Filter where the transition region is centred at one quarter of the

sampling rate

APODISING FILTER

Filter exhibiting a smooth roll off

BRICKWALL FILTER

Filter exhibiting a steep roll off

FLAC/ALAC

Examples of lossless audio formats

DIGITAL FILTER

Device or process that removes unwanted features from a signal.

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Rega DAC-R Specifications Page 14