Superpostiion of waves

Suppose listen to two voices as follows (where volumes are in $\displaystyle [0,1] $):

Voice 1: volume: 1, frequency = 7 Hz


Voice 2: volume: 0.35, frequency = 3 Hz



How are the waves combined? Does one interpret it as a 4 Hz wave? Do volumes play an effect?

Quote:

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Originally Posted by Sampras

Suppose listen to two voices as follows (where volumes are in $\displaystyle [0,1] $):

Voice 1: volume: 1, frequency = 7 Hz


Voice 2: volume: 0.35, frequency = 3 Hz



How are the waves combined? Does one interpret it as a 4 Hz wave? Do volumes play an effect?

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Model each voice by an appropriate sine function and then add the functions.