to waiver cyclically/pitch waivers (music)


Senior Member
Spanish - Argentina
Hi, I am translating a text about a (VCO) voltage-controlled oscillator and LFO (Low frequency oscillation)in a synthesizer, and I have the word waiver as verb, but I acannot really figure out what it means.
For me it was talking about waves, but it says waiver:

"If you hear a singer sing, very often the pitch of that note will waver cyclically while it's being held."

"The output of the LFO is connected to the VCO input or the control input to the oscillator, so the pitch waivers."

Could somebody tell me if it refers to waves?
Thank you!!
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