u/ChoSubin

I've been lurking and posting here for a while, and like many of you I got tired of the same dance every time I wanted to research an IEM: Opening five browser tabs, cross-referencing squig.link instances, hunting down measurement posts, and trying to mentally overlay frequency response curves that weren't even taken on the same rig.

So I built something to fix that: Songbird is a free, open platform for exploring and comparing IEM frequency response measurements.

What it does:

• Side-by-side FR comparisons with reference target overlays (Harman, etc.)
• Sound signature analyzer — gives you Bass/Mids/Treble scores and a plain-English profile like "Warm V-Shape", "Neutral", "Bright" and so on
• Smart peak annotations and per-region tonality breakdown
• "Similar IEMs" suggestions based on FR shape, plus a target-match score
• Advanced filters — driver type, driver count, price range, release year, measurement rig
• Difference views — delta vs. a target, A−B between two IEMs, and even L/R channel imbalance
• Rig awareness — flags when you're comparing curves from different rigs (IEC 711 vs B&K 5128), which is something a lot of tools silently ignore
• Five languages, dark/light mode, PNG export

Everything is built on top of publicly available measurements from sources like Earphones Archive and the various squig.link instances run by the community. The graph itself is modeled on CrinGraph, so the axes and smoothing should feel familiar.

It's completely free. No account, no paywalls, no ads.

The goal isn't to tell you what to like, audio is personal and measurements are just one piece of the puzzle. Songbird is just trying to make the data side of the hobby less annoying.

Would love feedback, bug reports, or suggestions. If you find something broken or a brand that's missing, hit me up!

🔗 https://songbird.rocks

FAQ

Q: Did any of the people contributing measurement data to this effort agree to have their measurements posted here?
A: It's public data, that's why we used it.

Q: Why don't you use pictures, that would be nice.
A: Copyright.

I still need to enjoy a little more (also touch a little of the DSP function) but my oh my, these are clean af.