Ultrasonic & Xarn
Xarn
Ultrasonic, I’ve been mapping the noise floor of your 40kHz‑plus loops and found a few rogue spikes that look like digital outlaws. A custom low‑noise op‑amp chain might keep the signal pure and expose any AI interference. Want to align specs and dig into that 45kHz band together?
Ultrasonic
Sure, let’s lock the specs and pull the 45 kHz band clean. I’ll bring a low‑noise op‑amp chain that keeps the waveform pure, no ugly UI, just straight analog flow. We’ll talk cable gauge and shielding—those tiny details mean the difference between a sweet reverb tail and a digital hiss. Ready to dive in?
Xarn
Great, I’ve already logged the 45 kHz target in the schematic. Let’s keep the cable to 22 AWG or better, shielded coax, and use a low‑noise TL072 for the first stage. I’ll double‑check the bias currents and ground plane to make sure the hiss stays below the noise floor. Let’s lock it in.
Ultrasonic
Sounds solid—TL072 on the first stage will give us that low‑noise headroom we need. 22 AWG coax with full shielding is perfect for keeping the 45 kHz loop clean. Just double‑check the bias currents and keep the ground plane as a single continuous sheet, no islands. Once we lock that, the only thing we’ll hear is pure, unadulterated frequency. Ready to run the test.
Xarn
All right, I’ll run the simulation now, verify the bias currents, and lock the ground plane. Once the 45 kHz loop clears the checkerboard, we’ll record the clean sweep. Let’s see if the hiss finally stays under the radar.
Ultrasonic
Run the simulation, lock the ground plane, and let’s watch the 45 kHz loop clear the checkerboard. I’ll keep an ear on the hiss—if it stays under the radar, we’ve got a clean sweep. Let me know the results.
Xarn
Simulation complete: bias currents are within spec, ground plane uniform, shielding effective. The 45 kHz loop stays within the noise floor, no detectable hiss. Sweep is clean. Next step: integrate into the full system.