Frekvenciaátvitel

Frekvenciaátvitel refers to the way an electronic system, such as an amplifier or filter, responds to different frequencies. It describes how the output signal's amplitude and phase change in relation to the input signal's frequency. Ideally, a system would amplify all frequencies equally, resulting in a flat frequency response. However, in reality, most systems have a non-linear frequency response.

The frequency response is typically plotted on a graph with frequency on the horizontal axis (often on a logarithmic scale) and amplitude gain or attenuation on the vertical axis. This plot reveals how well the system reproduces signals at various frequencies. For audio systems, a flat frequency response is often desired to accurately reproduce the full range of audible sound. In other applications, like radio receivers, specific frequency ranges are amplified while others are attenuated.

Key characteristics of frequency response include the bandwidth, which is the range of frequencies over which the system operates within a certain tolerance (e.g., within 3 dB of the maximum gain). The cutoff frequencies mark the edges of the bandwidth. Phase response is also an important aspect, indicating how the phase of the output signal shifts relative to the input signal at different frequencies. This can affect the temporal characteristics of signals passing through the system. Understanding frequency response is crucial for designing and evaluating electronic circuits and systems.