Although not directly related, before launching myself into Linux audio I want to first try and suss out this problem. I am experiencing a crunchy popping sound every so often on YouTube videos played in Mozilla Firefox 58.0.2 (64 bit). I recorded the sound internally using "Audio Recorder" and the crunchy popping sound is present upon playback. Suggesting this is a software / driver problem rather than faulty speakers, although it could be a hardware problem with the computers sound. Occasionally there is a continuous fuzz along with the regular audio, which continues on all playback until the Firefox browser is restarted. I tried Google Chrome, but I got the crunchy popping sound on videos with that too. I reported this problem on the Linux Mint forum but I didn't get much help.
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$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
Linux Mint 18.1 Cinnamon 64-bit (version 3.2.7), Intel Core i7-4790, NVIDIA GeForce GTX 750 Ti