| The VOIP acronym stands for voice over internet | | | | Of course, there are other processes involved in voice |
| protocol. What is it? How does VOIP work? It seems | | | | over internet protocol. One is audio compression. Using |
| to be a mind-boggling term fitted only for geeks but its | | | | a compressor/decompressor (CODEC), recorded |
| basic principle is the same as how many people use | | | | voices can be made to take less space and |
| computers to record their voices with the use of a | | | | frequency range. Frequencies inaudible to the human |
| microphone. It starts with the computer sampling the | | | | ear are unimportant so they are taken off. |
| sound that it hears from the microphone at the rate of | | | | Another process is packetization, which collects the |
| a thousand times per second. | | | | recorded sound samples and puts them into bigger |
| After that, the computer then stores the said samples | | | | chunks and then places these chunks in data packets |
| in memory and the record can now be played and | | | | that are going to be transmitted, each packet usually |
| replayed by the user. VOIP, however, transmits these | | | | containing 10-30 milliseconds of audio. And yet another |
| samples rather than save them on the local hard drive. | | | | process included in VOIP is data redundancy. Packets |
| Recorded audio is passed on to the internet protocol | | | | of data are being sent not just once but multiple times |
| and to the network links so that a listener using | | | | in order to make up for data loss that sometimes |
| another computer can hear the recorded voices. | | | | happen during the transmission. |