6/13/2023 0 Comments Word clock audio![]() ![]() ![]() These data blocks are a constant stream of bits moving down a cable. The signal is transmitted as a stream of small blocks or frames of data containing the audio sample along with timing, channel information, and error correction bits. There are several different digital audio transmission protocols, but all involve essentially the same basic process in handling data streams. Interconnecting these devices digitally can remove the latency and potential signal loss of analog interconnects, but digital transmission introduces a new set of problems, such as timing. (See Chapter 8 for more on setting gain structure.) If you practice good gain structure (essentially, controlling amplitude changes from one device to the next) and keep all your sampling rates consistent, the loss of quality is minimal, but it is still something to consider when using analog interconnects. You may also pay for this in a loss of quality in your audio signal as a result of multiple quantization errors and a loss of frequency range if each digital device is using a different sampling rate. As described in Section 5.2.1, you pay for this strategy with increased latency in your audio system. Transmitting in analog involves performing analog-to-digital conversions coming into the devices and digital-to-analog conversions coming out of the devices. When transmitting audio signals between digital audio hardware devices, you need to decide whether to transmit in digital or analog format. ![]()
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