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I re-ran some tests today using the latest PatchBox OS, which features a real-time kernel (4.19.71-rt24-v7l+) and other audio related optimizations. The results were not at all what I was expecting. First, here is a comparison of device latencies using […]
The Audacity loopback method I have been using seemed rather laborious and not as scientific as it could be. I discovered a little tool called jack_delay, written by Fons Adriaensen. A lot of great information about latency and how to […]
I received my first shipment from HiFiBerry this weekend: two DAC+ ADC Pro boards. I ordered these on May 14th and Modul 9 shipped them from Switzerland the next day, so it took roughly two weeks for them to travel […]
I received a few Audio Injector Stereo boards this week and started testing I received a few Audio Injector Stereo boards this week from Amazon. Today, I plugged them into two Raspberry Pi model 4’s running the same Raspbian image […]
I ran some tests today using JackTrip, and the results are far more promising than yesterday’s Mumble tests. The current 1.1 release of JackTrip was crashing for me every time a client connected to it. I was able to work […]
I ran some more Audacity latency tests today, this time using two Raspberry Pi 4s with the latest Raspbian (no tuning). Long story short is the results were not much different from OSX: Device Minimum Latency Focusrite 2i2 gen2 7ms […]
My previous Audacity tests used the default latency offset of -130, resulting in measurements that were 130ms lower than they should have been. I decided to re-test the devices while also making adjustments to the latency buffer sizes, to see […]
I tried a loopback test in Audicity with my setup per: https://manual.audacityteam.org/man/latency_test.html My computer is a 2017 MacBook Pro running High Sierra. I ran the tests after a restart of the computer with no other programs running. Results: Focusrite Scarlett 2i2 […]
Building upon my initial tests, I wanted to find a better way to measure the latency of audio devices, and what this actually sounded like. As described in this article, an easy way to do this is by performing a […]
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