Category Codec

Breaking Down Communications Jargon

Let’s face it. The communications industry is jargon filled to the point where we come off like a secret society. Our acronyms are the secret handshakes that either let you into the club or keep you out in the cold. In my latest article for No Jitter, I present a series of terms and concepts […]

A Practical Guide to Audio Codecs

I must be a glutton for punishment. It’s hard enough finding time to write this blog, but I volunteered to write for No Jitter, as well. However, being the practical guy that I am, I can share that content here and tend to both blogs at the same time.  Am I smart or what? This […]

An Introduction to the Opus Codec

This is my third article on audio codecs. The first two covered the common codecs such as G.711 and G.729, along with the relative newcomers iLBC and Microsoft’s RTAudio. I felt that it was important for people to have a general understanding of the pros and cons of several different codecs. For further reading, please […]

Getting Real with Real-Time Protocol

I’ve written quite a few blogs where I mention that SIP media is sent by something called RTP, but I’ve never described what that means.  Well, today I’ve decided to do something about that. RTP stands for Real-Time Protocol and like the bulk of the standards used by and with SIP, it is managed by […]

DTMF and RFC 2833 / 4733

Over the past couple of weeks I’ve written two installments on voice codecs (A Cornucopia of Codecs and Codecs Continued).   I mentioned some of the major characteristics of six different codecs and why you might choose one over another. However, I failed to point out something that is of great importance when making your codec […]

Codecs Continued

Last week I wrote about G.711, G.729, G.726, and G.722 in A Cornucopia of Codecs.  Many of my readers know that there are more codes to choose from.  All codecs exist for a reason, but some are clearly more popular, and frankly, useful than others.   Although you will typically encounter the four that I’ve already […]

A Cornucopia of Codecs

Over the past few months I’ve written a lot about the signaling aspects of IP communications and although I’ve mentioned media as the result of a SIP session, I haven’t really gone into much detail about the different types of media. Well, today I plan on rectifying that and spending some time on audio as […]