In the middle
As centers in are sound engineering frequencies in the range between about 400 and 4000 Hz respectively, and in the imaging of that brightness range between almost black and almost white.
Sound engineering
The mids comprise all those frequencies by means of which voices, musical instruments and most natural sounds can be recognized and distinguished; their readability remains intact even when highs (brilliance) and lows (bass) are completely absent.
The volume level of the individual frequency ranges is achieved by the equalizer when recording and playing back sounds . Professional mixing consoles etc. The like work primarily with the center frequencies with parameters (so-called "parametric centers"), through which not only the volume but also the exact frequency range can be regulated. "Fully parametric centers" refers to the function Q, with which the bandwidth is set, i. That is, how "wide" the equalizer applies the set attenuation or gain at the selected frequency. Since humans perceive middle frequencies best, bass and high tones are often amplified more than the middle in order to achieve an optimal sound image. This raising of the frequency ends is referred to in the sound engineer jargon as " bathtub filter " because the set frequency response with the raised ends looks like this in the drawing. Sometimes this also fakes the "hi-fidelity" sound.
image editing
In general image processing , with regard to contrasts and brightness, there is the following three-part division: shadows , middle and highlights . While the depth of the dark areas are provided and the lights of the light, which comprise the middle the rest therebetween.
literature
- Helmut Röder, Heinz Ruckriegel, Heinz Häberle: Electronics 3rd part, communications electronics. 5th edition, Verlag Europa-Lehrmittel, Wuppertal, 1980, ISBN 3-8085-3225-4
- Karl Hermann Huber: Filtering and sifting of audio frequencies. 1st edition, Frech Verlag, Stuttgart, 1974, ISBN 3-7724-0162-7
- Siegfried Wirsum: Practical sound technology, device concepts, installation, optimization. 1st edition, Franzis Verlag GmbH, Munich, 1991, ISBN 3-7723-5862-4