jitter


I am pretty sure I understand jitter generated by streamers and/or DACs. My question  is, when a digital recording is created, can there already be jitter in the digital data itself from the ADC? If so, can this ever be corrected during playback, either by the streamer or DAC?

jw944ts

I don’t think jitter causes dropouts. Are you using WiFi?  If you are, that’s more likely the issue I think. 

Coralkong, if you remember audioengr Agon member, has reclocking box to solve this jitter issue?

I don’t think jitter causes dropouts. Are you using WiFi? If you are, that’s more likely the issue I think.

Networks have jitter, but it’s defined differently than what we think of in audio. It’s variance in packet timings and if bad enough, can certainly overwhelm a DAC’s jitter reduction/buffers. If it's bad enough though it's called "packet loss" instead. I usually have a good Internet connection but I still set my streamer’s buffer relatively high to 10 seconds or more to avoid issues.

If on Wifi, use a free Wifi analyzer for your PC or phone to make sure you have a strong signal that isn’t shared by many other router signals.

 

BTW, recording studios use Master Clocks to synchronize multiple ADCs or DACs together. Not to reduce jitter.

As I understand it, while external clocks are excellent the distance due to the cable lengths actually can increase jitter vs. an internal clock of the best DACs today.  The internal femtoclocks used today sit right next to the DAC so don't have the same distance issues.  This is similar to the need to keep RAM right next to the CPUs.

It’s quite possible that an external clock can merely change or worsen jitter performance.