EDN recently published an article on using an external input buffer to extend the low range response of sounds cards:
“Input buffer and attenuator for sound card oscilloscopes extends low-end frequency response”. Stephen Woodward. https://www.edn.com/input-buffer-and-attenuator-for-sound-card-oscilloscopes-extends-low-end-frequency-response/ <https://www.edn.com/input-buffer-and-attenuator-for-sound-card-oscilloscopes-extends-low-end-frequency-response/?utm_source=newsletter&utm_campaign=link&utm_medium=EDNFunFriday-20220204&oly_enc_id=1794I5310467C9V> They have an example circuit and describe how it compensates for the AC coupling capacitors. On Wednesday, February 9, 2022, Fabian Schwartau <fab...@opencode.eu> wrote: > Besides hardware-hacking a sound card, you may also use some USB > oscilloscope, in combination with sigrok-cli and its --continuous flag. I > have never used this, but I guess there is a way to stream this data to > gnuradio. Note that not every hardware supports this --continuous feature! > Sadly the Wiki does not tell you which one does, so you have to look into > the source code: > https://github.com/sigrokproject/libsigrok/tree/master/src/hardware > and search for the flag SR_CONF_CONTINUOUS to find a working hardware. > Also, the sigrok.org website is down since a few days and the wiki is not > available, which would help to match a drivers name to an actual device. > > Fabian > > Am 09.02.22 um 19:07 schrieb vitt...@pm.me: > >> Good evening everybody >> I'm looking for a sampling device, GNURADIO compatible, with low sample >> rate ( max 50 KHz ) AND frequency response down to 1 Hz, so sound cards >> aren't the choice. >> Any suggestion ??? >> Tnx in advance :-) >> >> Vittorio >> >> >> fingerprint: |fb5f492a54e016c632c933d3ee4b7e38203c79ca| >> >> Sent with ProtonMail <https://protonmail.com/> Secure Email. >> >> > >
