What is Frequency Response?
Frequency response shows the changes in intensity or sensitive equipment across all frequencies. These data are a quantitative measure reflects the system throughput as a function of frequency, compared to the intensity of the entrance. This means the frequency response is very useful for understanding the dynamics of the equipment.
Most equipment manufacturers indicate the frequency range frequency response, for example 20Hz -20 000 Hz. Often you will also experience a graph indicating the size of the amplitude (Amplitude), relative each frequency.
The data usually appear Hz on the X-axis relative decibels that will appear on the Y – X .
Equipment that its frequency response is equal across all frequencies, is equipment with a flat frequency response (Flat). Equipment with such frequency response, there is a maximum recovery ability of the voice signal without any effect on the sound produced. Recording guitar or piano, for example, using microphones have a flat frequency response to maintain a high source reconstruction fidelity.
The same techniques also certain stereo microphone placement and recording distant sources. Equipment that varies its frequency response across the frequency range, with peaks or valleys (Dips), is an equipment designed frequency response (Shaped). Equipment with such frequency response, designed to increase and emphasize certain frequencies for different applications, or alternatively reduce and decrease unwanted frequencies. How is frequency response? usually measured frequency response in the human audio range that is bio low frequency 20Hz and high frequency 20 000 Hz (though some claim that there is great importance to the frequency response well above and below this range Frequency Response called Wideband). frequency response characteristics indicate the equipment’s ability to remain unified across the entire range.
Frequency response between 20Hz -20 000 Hz, for example, with amplitude of + /-3dB, indicates the maximum change in intensity or sensitivity between the lowest frequency to highest, not exceed 0.3 dB why is it important? Consistency and frequency response as flat as possible, is very important as to we can recreate any sound is a reliable and closest to the source, across the whole spectrum of frequencies. For example, if we acquire a frequency response amplifier design (shaped), we limited the recording of certain instruments, for the simple reason that the equipment does not respond optimally to their frequency range.