hi, most people can hear as low as 20hz most big speakers can produce sounds in the 30-50 hz range. smaller speakers can usually only produce higher frequencies. it’s different with headphones, but you can check the specs for your hardware online, mostly from the manufacturer or testing sites.

This sound can be heard from my smartphone speaker, which definitely can’t play low sub bass frequencies. and it sounds pretty high as well. maybe 100hz or something? can’t say for sure. can’t check on my PC right now, might come back to it later.

-edit- try this site for tone generation: https://www.szynalski.com/tone-generator/ it should help understand the sounds of frequencies a little better!