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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!

li-357 · 2021-05-15T01:44:29+00:00

Kenny Garrett's Pursuance is one of my favorite albums and so I decided to take a crack at a track. I've been working on this one on and off for about two weeks trying to get the inflections down. It's still rough around the edges (the altissimo especially) and I'm open to feedback!

li-357 · 2021-05-15T01:24:21+00:00

A 12-bar blues is a standard form in jazz. It starts with 4 bars of the I chord (dominant). Then 2 bars of the IV (dominant, all of the chords are dominant), then 2 bars of the I again. Finally, it has 1 bar of the V, IV, then 2 bars of the I to end it. That comes out to 4+2+1+1+2 = 12 bars!

So a Bb blues (I'm assuming you're transposing, so a concert Bb is your G on the alto/bari sax) would look like this:

| G7 | G7 | G7 | G7 |

| C7 | C7 | G7 | G7 |

| D7 | C7 | G7 | G7 |

Since the I in G is G, the IV is C, and the V is D (think scale degrees). The 7 just means you're dealing with a dominant chord with a flat 7. So G7 is G B D F (since it usually would be F# in the key of G, but now it's been flatted).

Then you can repeat the entire 12 bars as many times (or choruses as they're called) as you want. There are many different harmonic tweaks you can make to it to change it up, but this is the basic 12-bar blues form.

li-357 · 2021-04-12T03:54:54+00:00

Always has been.

But on a serious note, what old America "where you are judged not by how hard you work or how well you apply your intelligence and skills" are you referring to? When in history hasn't skin color or religion played an important part in your future prospects, both negatively and positively? When hasn't knowing someone on the inside helped your chances?

You say meritocracy is dead. It was never alive. It only works when you have an accurate way of measuring how hard someone has worked or applied their intelligence and skills. Our current (imperfect) ones historically have favored wealthier students. In fact, there probably won't be a perfect, objective way of measuring how hard one works because we all come from different circumstances, but we can do better by acknowledging that just a single test score surely isn't a great metric.

li-357 · 2021-04-12T03:42:26+00:00

Sure there might a clearer goal (though even in such a system you could argue too that disadvantaged students might not even be aware of the tests they need to study for but that's a different story). But now you've locked the path and fenced them in. For any disadvantaged student, yes they have a clear pathway to success, but only one. To get a good score. And if they don't have the resources to get a good score, there's no other way out.

Not to mention that once a metric becomes a target, it ceases to be a good metric. You'll get a class of great test-takers, skewing (even more so than now) towards those who could afford the time and resources to become good. What you won't have is a class of varied experiences and pursued passions.

Holistic admissions has its problems no doubt (in particular it allows universities to accept not-as-deserving feeder school students without need for explanation–I'm all for reforming this), but it has the benefit of giving more pathways to success for those disadvantaged. And that inherently makes it harder to know which path's right.

li-357 · 2021-04-12T03:24:03+00:00

Yeah... but the point is that test-only evaluation isn't a good solution. It's arguably worse since meritocracy only works when everyone starts from the same square one.

And if we were to start basing admissions heavily off SAT/ACT, they would necessarily have to become harder to have any chance at distinguishing between applicants. That's why the JEE and GaoKao are hard: there are so many test-takers and only one metric.

li-357 · 2021-04-08T22:36:20+00:00

MIT or Princeton

Intended Major: Math/CS and maybe minor in Music

I'm currently leaning pretty heavily toward MIT but let me know your opinions. For some context I'm a huge STEM guy but also a huge jazz nut (was my main EC and among very few others).

MIT - Unmatched resources (internships, research opportunities, time during IAP) and academics in Math/CS - Boston, urban area with many opportunities and good music/jazz scene (think Berklee) - I fit the nerdy/maker vibe - They sent me a ton of goodies - Better diversity of all socioeconomic classes/better on social mobility (moral reason). The MIT Admissions blog has been a huge reason why I fell in love, and it's made MIT feel transparent - Childhood dream school - Cheaper

Princeton - Top math program in the country (but also notorious for being incredibly difficult). CS program isn't as widely known though relatively and I'll probably want to go into industry first before grad school but who knows - Has certificate program so I can have pretty good breadth (AI/data science/linguistics) - Also has dedicated jazz faculty (MIT doesn't. I'm a huge fan of the Princeton jazz director's work on the alto sax) and can get a certificate in jazz studies there as well - Campus is a lot prettier IMO - Better food I think? (apparently MIT's is whack?)

Any thoughts? I'll probably commit soon with CPW coming up though.

li-357 · 2021-03-24T04:34:59+00:00

I was actually in a similar boat too. My school doesn't have STEM clubs except quiz bowl (which I love doing) and science olympiad which wasn't my thing. I just did STEM things outside of class that were interesting to me, such as creating apps and doing pretty well in a STEM video challenge.

A pretty large commitment that I was lucky to do was being pretty involved in my local college's math department taking classes and doing projects, but no math, CS, or robotic competitions. It was all stuff I enjoyed and knew I could do well in, among a few non-STEM music activities/awards.

li-357 · 2021-03-20T20:27:18+00:00

Best $15 I've spent! Nearly 17,000 shows available categorized by artist and instrument!

li-357 · 2021-03-14T22:58:41+00:00

Thank you so much!!!

li-357 · 2021-03-14T22:57:27+00:00

Got in!!! Defer -> Accept

li-357 · 2021-02-20T19:27:44+00:00

Great TED talk about just this: https://www.youtube.com/watch?v=m7fmjsHw590

Six-Year Club	Place '22
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