Amplification : A method for increasing the amplitude (or loudness) of electrical signals.
Amplifier : An electronic device which generates a high power signal based on the information supplied by a lower powered signal. A perfect amplifier would add or subtract nothing from the original except additional power - these have not been invented yet.
Amplitude : The loudness of sound waves and electrical signals. Amplitude is measured in decibels (dB) or volts.
Analogue to Digital Converter (ADC) : A device that converts the infinite range of an analogue signal into discrete "steps". Normally, a good audio ADC will use sufficient "steps" to resolve the smallest musical detail. For CD, this is a 16 bit converter, having 65,536 discrete levels covering the most negative signal level to the most positive.
Attenuation : The decrease of a signal's amplitude level over any distance during transmission or through purpose designed attenuators. Attenuation measures signal loss in decibels (dB).
Bandwidth: the measure of a range of frequencies containing an upper and lower limit
Bus: a pathway that connects devices, enabling them to communicate.
Filter: a circuit which is frequency dependent. The "pass band" is the range of frequencies allowed through, and the "stop band" is that range of frequencies which are blocked
Frequency: The rate at which an alternating current changes in a cyclic manner from positive to negative and back again (one cycle)
Frequency Modulation (FM): a modulation technique that records changes in an information signal by modifying the frequency of the carrier signal according to changes in the amplitude of the information signal.
Amplifier : An electronic device which generates a high power signal based on the information supplied by a lower powered signal. A perfect amplifier would add or subtract nothing from the original except additional power - these have not been invented yet.
Amplitude : The loudness of sound waves and electrical signals. Amplitude is measured in decibels (dB) or volts.
Analogue to Digital Converter (ADC) : A device that converts the infinite range of an analogue signal into discrete "steps". Normally, a good audio ADC will use sufficient "steps" to resolve the smallest musical detail. For CD, this is a 16 bit converter, having 65,536 discrete levels covering the most negative signal level to the most positive.
Attenuation : The decrease of a signal's amplitude level over any distance during transmission or through purpose designed attenuators. Attenuation measures signal loss in decibels (dB).
Bandwidth: the measure of a range of frequencies containing an upper and lower limit
Bus: a pathway that connects devices, enabling them to communicate.
Filter: a circuit which is frequency dependent. The "pass band" is the range of frequencies allowed through, and the "stop band" is that range of frequencies which are blocked
Frequency: The rate at which an alternating current changes in a cyclic manner from positive to negative and back again (one cycle)
Frequency Modulation (FM): a modulation technique that records changes in an information signal by modifying the frequency of the carrier signal according to changes in the amplitude of the information signal.
