Irregular frequency pairs still produce reliably periodic waveform beats

Evidence

We don’t need to use whole numbers. For example, beating at 2.5342… Hz is heard for the combination 101.2671…+200 Hz. The actual waveform may never exactly repeat, but the waveform shape beats repeat reliably at 2.5342… Hz. — Eric J. Heller, Why You Hear What You Hear- An…, 2230