Equalization (audio)

Equalization in audio engineering, also filters or equalization (EQ) called, means a lowering or raising of frequency ranges.

Applications

Artistically for sound design

Examples are the equalizer of a hi-fi system or Audiomixdown a music production.

  • High-pass filter in the audio engineering application oriented more as a low barrier, bass filter, low cut filter, bass cut filter, low cut filter or rumble filter called. The last criteria have direct out that such a filter EQ useful attenuates the depths of the audible signal.
  • Low-pass filters are application specific sound over height lock, Height filter Treble -cut filter, high-cut filter, or noise filter called. These terms of sound engineering have clearly indicated that such an EQ filter beneficially attenuates the heights of the signal audible.

Technical and automates or supports

The automatic equalization in analog technology (tape transfer, transfer stations, record ) and in digital technology are referred to as pre-and de-emphasis (or pre-and de-emphasis ). For them, there are standardized values ​​, which are respectively known under the name of the issuing institution, eg as DIN, CCIR, NAB or AES equalization. Most times ( transition frequencies) while the time constants indicated instead of the ideological cutoff frequencies.

Audiosignal Analogue electronics Audio Engineering Society Band-stop filter Equalization (audio)#Shelving filter
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