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Is an analogue audio signal DC or AC? - Factual Questions ...
https://boards.straightdope.com/t/is-an-analogue-audio-signal-dc-or-ac/474740#:~:text=DC%20is%20generally%20understood%20to%20be%20constant%2C%20and,frequency%20range%20of%2020%20Hz%20to%2020%2C000%20Hz.
Are Speakers AC or DC? Here’s The Truth – Stamp Sound
https://stampsound.com/are-speakers-ac-or-dc-heres-the-truth/
Both passive and active speakers are classed as AC devices. This is because they receive the signal from the amplifier, and this is always AC rather than DC. The amplifier supplies the AC power to the speaker, which allows it to produce sound, whether it …
Why are audio signals AC not DC? - Quora
https://www.quora.com/Why-are-audio-signals-AC-not-DC
Computers do change direction on the output of their analog audiosignal. In fact audio signals are varying AC signals. They do not change direction on their digital outputs (incl. digital audio), because those are digitally coded signals with two DC states.
Is an analogue audio signal DC or AC? - Factual …
https://boards.straightdope.com/t/is-an-analogue-audio-signal-dc-or-ac/474740
The article on AC says that audio signals are AC. However, audio and radio signals carried on electrical wires are also examples of alternating current. However the article on DC seems to suggest that they are DC. Although DC stands for “Direct Current”, DC sometimes refers to “constant polarity.”.
DC-Offset - Sound on Sound
https://www.soundonsound.com/glossary/dc-offset
DC-Offset. Audio signals are conveyed electrically as an 'alternating current' or 'AC' signal. This might typically result in a signal voltage that varies, for example, between +3 Volts and -3 Volts, with a waveform that is more or less symmetrical about the 0V line. However, there are circumstances — often, but not always, as the result of a fault condition — where instead of …
AC vs DC coupling: What is it? – Noise Engineering
https://noiseengineering.us/blogs/loquelic-literitas-the-blog/ac-vs-dc-coupling-what-is-it
Basically, both AC and DC signals can have their place in audio, but we should know how and when to use them. Bottom line In the broadest of terms any reasonably high frequency signals are considered AC, and static (or extremely low frequency) signals are considered DC. Simple as that.
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