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Processing with an equalizer or filter can have a great impact on the perceived sound. To correctly identify the sound characteristics of different frequency ranges, the following clues can help:

Frequency rangeFrequenciestoo lessjust righttoo much
subbass/ bass/
Upper bass
up to 250 Hzthinpowerful, richbooming
lower mids250 – 750 Hzcoldwarmmuddy
upper mids750 Hz – 3 kHzlaxcrispyintrusive
lower highs3 – 8 kHzmuffledpresentsharp
upper highsabove 8kHzmuffledbrilliantspiky, hissy

Frequencies and pitch

All tones and octaves are related to frequency. In order to tune instruments correctly, it has been determined that the pitched A is at a frequency of 440Hz. This tone is called “concert pitch” and corresponds to A3 on a MIDI keyboard. From this frequency all tones can be derived, because an octave up or down always corresponds to a doubling or halving of the frequency.

Example tone A:

A0 =       55 Hz
A1 =     110 Hz
A2 =     220 Hz
A3 =     440 Hz
A4 =     880 Hz
A5 =   1760 Hz
A6 =   3520 Hz
A7 =   7040 Hz
A8 = 14080 Hz

In some EQs, a keyboard can also be displayed, which can then be used to assign frequencies to individual tones.

Klaviatur mit Frequenzanzeige