4 ms·Don't forget a decent processor/GPU to encode the audio.by alexchamberlain 15y agoDon't forget a decent processor/GPU to encode the audio.coob 15y agoYOu don't need a decent processor or a GPU to encode speech quality audio, at all.EvilLook 15y agoExactly. I was doing GSM voice over IP with SpeakFreely in 1996 on a 486DX2.