Realize that a standing wave is the superposition (interference) of a wave upon itself, facilitated by trapping and reflecting the waves within a space with dimensions that match the wave's frequency, or multiples of the frequency.
The wave you've drawn is more than likely a traveling wave and more so the Amplitude Modulation of one sine wave by another. Another name for modulation is signal mixing. The mixing of two signals is simply done by taking their product (multiplying the two signals).
In your specific example both the carrier and information signal are sine waves whose frequencies are close to one another.
If you are able to capture a longer sample of the actual time signal you could analyze it by processing the Fourier transform, and this would reveal the carrier frequency and side bands (information).