1. High-pass and Low-pass Filters:
High-pass filters are used to cut off low frequencies in a sound that may interfere with the clarity of higher frequencies. Similarly, low-pass filters are used to reduce high frequencies in a sound.
2. Parametric Equalizers:
These allow users to select a specific frequency range to adjust and precisely tailor the sound. Parametric equalizers have adjustable parameters such as center frequency, bandwidth (Q factor), and gain.
3. Graphic Equalizers:
They divide the audio spectrum into several frequency bands to adjust levels in each separately. Graphic equalizers are commonly found in consumer and professional audio setups.
4. Shelving Equalizers:
They either boost or cut all frequencies above or below a certain frequency. A high-frequency shelf boosts or cuts all frequencies above a certain frequency and a low-frequency shelf affects all frequencies below that point.
5. Peak Filters or Notch Filters:
They are used to make narrow adjustments to frequency ranges, usually to remove a frequency that is causing undue noise or interfering with desired sound.
6. Complementary EQ:
This technique involves boosting or cutting the opposite frequency range to the problematic frequency range. This can be useful in treating resonance and standing wave issues.
7. Multi-band Compressor EQ:
This technique combines parametric equalization and dynamic range compression in one device to adjust individual band EQ settings and compress the audio output.
Publication date: