A high-resolution software player, such as Sonic Studio and JRiver, are required to play high-end music, and a good sound card or external digital-to-analog converter (DAC) is required (see D/A ...

Any sound above 20 000 Hz is called ultrasound. It is too high pitched for humans to hear, but other animals (such as dogs, cats, dolphins and bats) can hear ultrasound. Ultrasound waves are ...