User:The Patience

FREQUENCY RESPONSE :::The frequency response of a device describes the relationship between the device's input and output with regard to signal frequency and amplitude. Another term for this is magnitude response. In its most common usage, the frequency response describes the usable range of signal frequencies which the device will pass from input to output. An unknown signal processing element is fed from a variable frequency sine wave generator, and a device for indicating sine wave level in decibels is connected to its output.The ideal output oscillator produces the same output level at all frequencies(in reality the linearity is not always perfect), so the input level to the black box is constant. As we sweep the oscillator frequency throughout the audio range, however, we may see that the output level of the black box, as registered by your meter, changes, if we make not if the level at each frequency on a graph....