Asound mixer, impressed by the new equipment that was just installed in his recording studio, says that now he will be able to singers and musicians produce better music because he can eliminate unneeded and undesired wavelengths. what term describes the characteristic of sound waves that the sound mixer is now able to alter?

Frequency

Explanation:

A frequency mixer is an electrical circuit that creates new frequencies from two different signals. The practically new frequency is produced by adding and subtracting input signals.  

The frequency range is shifted from one range to another by a process known as heterodyning. Sound mixers will alter the frequency of waves to suit according to musicians.

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