Difference between revisions of "Word Clock"
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The term "<nowiki>Word Clock</nowiki>" is used to describe a one cycle per [[sample period]] "square wave" signal used for synchronization of digital audio equipment. The signal is typically "TTL level" 5 volt p-p and is carried on 75 Ohm coaxial cable with BNC connectors. | The term "<nowiki>Word Clock</nowiki>" is used to describe a one cycle per [[sample period]] "square wave" signal used for synchronization of digital audio equipment. The signal is typically "TTL level" 5 volt p-p and is carried on 75 Ohm coaxial cable with BNC connectors. | ||
==History== | ==History== | ||
| − | Earlier digital audio systems employed a number of formats of interconnection, many of which were proprietary. Some were parallel; in which case each "bit" was carried on a separate conductor and a Word Clock signal was used to synchronize the timing of the transmission of each complete "word" of 16 bits, once per sample period. | + | Earlier digital audio systems employed a number of formats of interconnection, many of which were proprietary. Some were [[parallel]]; in which case each "bit" was carried on a separate conductor and a Word Clock signal was used to synchronize the timing of the transmission of each complete "word" of 16 bits, once per sample period. |
In other systems; the left and right channel's digital audio data was transmitted in a [[serial]] manner, in parallel with a Word Clock signal which was used to synchronize the receiver with the beginning of the transmission of each serial "word." | In other systems; the left and right channel's digital audio data was transmitted in a [[serial]] manner, in parallel with a Word Clock signal which was used to synchronize the receiver with the beginning of the transmission of each serial "word." | ||
Revision as of 11:28, 2 April 2012
Overview
The term "Word Clock" is used to describe a one cycle per sample period "square wave" signal used for synchronization of digital audio equipment. The signal is typically "TTL level" 5 volt p-p and is carried on 75 Ohm coaxial cable with BNC connectors.
History
Earlier digital audio systems employed a number of formats of interconnection, many of which were proprietary. Some were parallel; in which case each "bit" was carried on a separate conductor and a Word Clock signal was used to synchronize the timing of the transmission of each complete "word" of 16 bits, once per sample period.
In other systems; the left and right channel's digital audio data was transmitted in a serial manner, in parallel with a Word Clock signal which was used to synchronize the receiver with the beginning of the transmission of each serial "word."