Samuel Sieb wrote: >> It's a USB sound device sampling an analog source (your >> microphone). A digital input would be something like SPDIF. Anil Felipe Duggirala: > Thanks Samuel. That makes it clearer to me, now I just need to find > out what SPDIF is and how different input devices fall into those two > categories. Wikipedia... Analogue inputs (varying voltages) go into microphone and line-level inputs, digital data go into data inputs (SPDIF being one kind, that can either be an electrical signal over wiring, or an optical signal through glass fibre-optics or plastic cabling. You'll see SPDIF (a consumer variety of digital audio) on the outputs of CD, DVD and Bluray players, the inputs of some amplifiers, and inputs or outputs on some modern TV sets. And on some audio production hardware (effects devices, typically). >> No, it should be a voice saying whatever is written for the button >> you're pressing. e.g. "front left" If you're getting static, >> something isn't working. What output options do you have for that >> device? > I don't know what you mean by "output options". With the pulseaudio sound preferences window on Gnome, and Gnome-like, desktops, the hardware tab has a choice of hardware it finds, and a test speakers button. It will pop up another window allowing you to hear spoken test announcements on individual speakers (or earphones). Other desktop interfaces should have something *similar* (i.e. a bit of exploring may be needed if you use a different desktop). > The test button says "Mono". This device's sound output comes into a > single earphone, with mono sound. However, clicking on the button > makes a short (~2 seconds) static sound. >From time to time I get random heavily distorted sounds on some devices, that otherwise work well. As best I can work out, it's not my hardware, but poor driving of it. > The mic appears to be working fine. I tested it with the Gnome sound > recorder and skype. However, the mic "volume" level appears to be > pretty low. It is set to almost max in my Sound settings, but the > recorded audio is still at a low level. I get a similar thing with audio hardware on various computers: I have multi-input sound capture USB devices (Behringer Uphoria UMC1820 and a UMC404HD), that if I use Audacity to interface *directly* with them, give me good sound input (and often faulty playback). If I drive any of the inputs up to maximum, the waveform will only begin to clip at full-scale (as it should). But, if anything tries to go through pulse-audio in the middle, the captured signal is half volume. I can drive the input stages right up to 100%, but only get around half-scale out of pulse-audio. Trying to drive them harder only distorts, I cannot get full amplitude audio capture through pulseaudio. With Audacity, I can bypass pulseaudio, but other things (e.g. Zoom) don't have that ability. So streaming audio is always far too quiet. And, yes, I have looked at alsamixer, and other pulseaudio mixer options, it's not an attenuated input, it's not being captured properly. -- uname -rsvp Linux 3.10.0-1160.45.1.el7.x86_64 #1 SMP Wed Oct 13 17:20:51 UTC 2021 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
