Consumer Electronics

The higher frequencies in the audio spectrum possess the_______energy content.
Background noise is most noticeable in the form identitified as_______
Tone controls can be used to_______the quality of sound.
A system installed in poor acoustic environment may need a more_______set of controls.
Additional amplification is needed when_______equalisers are used, so that normal level is maintained.
Mixers are the_______centre of an audio system.
With equalisers_______gain must be provided so the output is at_______level.
Mixers introduce_______depending on how many controlled circuits are connected together for mixing.

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