Eli5: why has the sound quality of phone calls improved so little over the last several decades despite us making technological advances in so many areas?

Question

Eli5: why has the sound quality of phone calls improved so little over the last several decades despite us making technological advances in so many areas?

In: 0

Answer 1

Because the algorithm we use to transfer speech over gsm network has not changed since Nokia developed it in 1995, EFR is still standard in many networks. The higher quality voice calls go over the data networks as voip calls using variety of sampling systems.