Equalisation.

5. A special kind of positive feedback which occurs when a sound loop exists between an audio input (for example, a microphone or guitar pickup) and an audio output (for example, a loudspeaker).
6. The amplitude passed by each filter is adjusted using a slide control to boost or cut frequency components passed by that filter.
7. The process of adjusting the balance between frequency components within an electronic signal.
8. A frequency dependent amplifier circuit, working in the audio frequency range, 0 Hz to beyond 20 kHz.
9. Also known as amplitude, describes how big the signal is. The greater the amplitude of the signal, the higher the ......
12. A representation of sound, typically as an electrical voltage.
13. The part of the frequency spectrum that provide clarity and edge.

1. Fixing sonic problems to effect the music.
2. The increase in the raw signal from your guitar or microphone before it goes into any of the other electronic components.
3. Fixing sonic problems that are affecting the music.
4. Multi-band variable equalizers which allow users to control the three primary parameters: amplitude, center frequency and bandwidth.
10. The bottom range of frequencies.
11. The range of frequencies in which we hear the main body of sound.