NIMBUS MONTH #1

Question 1

What is Impedance?

Answer 1

• Impedance (Z) is the resistance of a circuit to a current (audio signal).
• This resistance is measured in Ohms (Ω).
• Impedance is the total opposition (including resistance) that a circuit has to a passing current.
• All circuits are going to have some degree of resistance, but the main device that will impede the progress of our signal/current will be the speaker.

Question 2

What is A/C?

Answer 2

Alternating Current

• an alternating current, or AC, is an electric current that periodically reverses its direction, as opposed to a direct current, or DC, which maintains a single direction.
• the rate of alternation is called the frequency and is measured in cycles per second, or hertz (Hz)
• example: normal household current alternates at 60 Hz
• audio signals are, of course, ALWAYS ALTERNATING, the frequency corresponding to the frequencies of the sounds the signal represents

Question 3

What is S/N?

Answer 3

Signal to Noise Ratio