Because of amplifier.
By installing a newer / better sound card, and purchasing higher quality speakers. Using MP3s and other formats with a higher sampling ratio will also improve the way it sounds.
Well for one, with a sound card you get to hear sound from your computer. But no really, with better or high end sound cards, you get clearer better sounding sounds from your PC. That's all there is to advantages from sound cards, You get sound...Lol.
Sounds, which are mechanical energy, vary in both frequency and amplitude. The pitch of a sound, the "highness" or "lowness" of that sound is a function of its frequency. Higher frequency equal higher pitch. The amplitude of a sound is the sound energy or "loudness" of the sound. The higher the amplitude of the sound wave, the more energy in the wave and the louder it is. source, medium and sender
Sound is processed in the sound card of the computer. It then sends signals to the speakers. The speakers vibrate and make the actual sounds that you hear.
The sound card and the sound adapter are the hardware devices that control the computer's sound. These need unique drivers for them to function properly.
Sound devices are used to output sounds and music from your computer.
They both sound correct to me, but if you want my opinion, i think you are good at computer Sounds better.
the pitch of someone
Start->Control Panel->Sound and Audio Device Properties, locate the tab "Sounds" and choose sounds for the operations which you want to play sounds when you start it.
they can here higher sound than a human
When you generate a high frequency sound, through earphones or a speaker,you hear it as a high pitched sound. Higher frequency ==> higher pitch.Higher-frequency sounds have shorter wavelengths, and sounds of all frequencieshave the same speed, as long as they're all moving through the same stuff.
Ultrasonic sounds