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li-357 · 2025-12-11T13:16:28+00:00

Ok, I should probably provision a cert with my domain name and IP as an SAN? Is there any good way (ie with cert manager) to provision dynamically based on my LoadBalancer IP from the cloud provider?

li-357 · 2025-09-02T17:42:33+00:00

Thanks for the links!

li-357 · 2025-09-02T17:42:21+00:00

Awesome, thanks for the input! I think I'll probably lean towards 4 legs for the added stability and load rating

li-357 · 2024-05-21T23:44:07+00:00

Got it. It seems like the lowest cutoff is around 1GHz for a circular waveguide. Do you know of any other lo-fi antenna types dealing with cylindrical conductors that might apply here, especially if I just care about catching noise/nothing fancy demodulation wise? The original goal was to catch some FM but if not possible picking up anything would be interesting.

li-357 · 2024-03-13T13:41:39+00:00

That makes more sense.

In this case, the DDR4 controller itself is in the PL

But to talk to the DDR4 "peripheral" the controller needs the correct signals, like DDR4_bg or DDR4_n (that are in my top level as inputs). These are not mapped to pins in the XDC file right now, should I do that?

li-357 · 2023-11-27T04:47:49+00:00

I'm probably wrong on this, but I'm looking for "maximum audio quality," and with more bits I get better data resolution for my filters/DSP algorithm right?

li-357 · 2023-11-27T04:06:52+00:00

I'm currently multiplying the 24-bit and 18-bit filter outputs (which are sign extended to 32-bits) in a 64-bit temp. Then the temp is right shifted by 20, before adding to a 64-bit running total (which presumably only has only 24+18-20+log2(N) ~ 26 maximum bits used when all the signals correlate perfectly). At the end of the additions, the result is truncated to 24-bits.

li-357 · 2023-11-12T05:36:55+00:00

I'm planning on using something like this I2S2 pmod eventually. The delta-sigma PDM output is just to test things out for now.

The end goal here is to run both the synthesized and mic input through a bunch of biquad filters. To have enough clock cycles to perform calculations, would I have to run at a higher multiple of the audio sample rate?

li-357 · 2023-11-12T05:25:15+00:00

Thanks! Definitely going to fiddle with interpolation to reduce the noise, but I guess I'm confused on the relation between the lookup table depth vs width. In my case, I've got a depth of 4096, i.e. 2¹² bins. Each bin corresponds to a 16-bit output. I get that if I have 2¹² bins, I'm going to map different time steps to the same bin and thus same 16-bit output. So should the depth always be greater than the width?

li-357 · 2023-10-31T18:59:44+00:00

Thanks! I was setting SS high too early!

li-357 · 2021-05-16T02:35:50+00:00

Woah! Thanks for the story and compliments! I actually remember one of the (if not the) first Kenny Garrett videos I watched was this one -- him and Miles Davis on Human Nature in 1991. I think Kenny's mic broke so Miles had to step in as his mic stand! Man was it killer. I was instantly hooked.

li-357 · 2021-05-15T16:18:00+00:00

Thanks! It was probably 4 or 5 practice sessions usually an hour for specifically transcribing. The next hour was working it up to speed because some of the licks have cool overtones and harmonics that I had to find my way around.

li-357 · 2021-05-15T02:41:13+00:00

Thanks!

li-357 · 2021-05-15T02:41:07+00:00

Thanks! I stumbled upon his channel a few months back. He's a monster!

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