Is it possible to have the device respond to a sound instead of a voice?

As a newbie, I’m wondering if the device can be programmed to wake up to a sound wave, instead of a voice

eg. instead of waking the device up with Hey Google, I’d like it to only wake up when it hears a specific sound wave (wav). It’ll be the same sound wave every time. Ideally I’d like to be able to train the device by playing my sound wave to it?