Hello community.
I would like to input sound to my Pi 4. I am building a product that listens for feint sounds, adds effects to the sounds it picks up, then broadcasts this via a webserver and html player to connected devices (for industrial monitoring). I have all of this working using a set of Plantronics USB headphones as the input device and using ffmpeg (alsa hw:3,0) as the initial input. I have designed and built a low-noise pre-amp board to interface the actual sound transducer I will be using, so the input level to the PI can be whatever I want it to be, but I am struggling to find a decent USB sound input device. It needs only to be 16 bit, 44.1k mono (or better) with a good SNR and DEFINITELY NO AGL or other meddling. The cheap ugreen one I tried from amazon was junk (literally didn't work).
Does anyone have a suggestion for a low-cost, low noise proven working off the shelf bit of kit. I'm thinking £10 / $15 ish max? Also, any other method of getting audio in with the same specs that ffmpeg will easily read from.
Much obliged for any suggestions.
I would like to input sound to my Pi 4. I am building a product that listens for feint sounds, adds effects to the sounds it picks up, then broadcasts this via a webserver and html player to connected devices (for industrial monitoring). I have all of this working using a set of Plantronics USB headphones as the input device and using ffmpeg (alsa hw:3,0) as the initial input. I have designed and built a low-noise pre-amp board to interface the actual sound transducer I will be using, so the input level to the PI can be whatever I want it to be, but I am struggling to find a decent USB sound input device. It needs only to be 16 bit, 44.1k mono (or better) with a good SNR and DEFINITELY NO AGL or other meddling. The cheap ugreen one I tried from amazon was junk (literally didn't work).
Does anyone have a suggestion for a low-cost, low noise proven working off the shelf bit of kit. I'm thinking £10 / $15 ish max? Also, any other method of getting audio in with the same specs that ffmpeg will easily read from.
Much obliged for any suggestions.
Statistics: Posted by davelowe — Thu Mar 06, 2025 5:11 pm — Replies 0 — Views 34