Building a Raspberry Pi-powered Barkometer, Part 3
In the last two parts of the Barkometer, which is my IoT project to prove that my dog is not a barkoholic, I discussed the hardware and my problems with getting a clean recording. It turns out, much to my irritation, that the Sabrent USB 2.0 External 2.1 Surround Sound Adapter was the problem all along. But before I discuss the hardware problems, let me explain how to record sound on a Raspberry Pi …The subsystem of Raspbian that deals with sound is called the Advanced Linux Sound Architecture (ALSA). ALSA is a huge, complex project with support for an incredible number of sound cards and is basically death by features. It handles everything from single channel recording (what I’m trying to do) to generating tones, white noise, and all sorts of test signals, to playback of multi-channel audio. Truly a massive engineering feat.To read this article in full or to leave a comment, please click here
Presto change-o, you run on KVM now.