Sort:  

Did you hear that? Sound frequency is measured in Hertz (Hz). The higher the Hertz, the higher-pitched the sound. Dogs hear best at 8,000 Hz, while humans hear best at around 2,000 Hz.

Coin Marketplace

STEEM 0.29
TRX 0.12
JST 0.032
BTC 63432.48
ETH 3063.80
USDT 1.00
SBD 3.81