Question 1

How does the key detector work?

Accepted Answer

We analyze the audio with a Fast Fourier Transform (FFT) to extract the pitch profile across 12 chromatic notes. The resulting chroma vector is compared against the major and minor key templates using the Krumhansl-Schmuckler algorithm to find the best-matching key.

Question 2

What is the Camelot wheel code?

Accepted Answer

The Camelot wheel is a DJ-friendly numbering system for harmonic mixing. Each key gets a number 1-12 and a letter (A for minor, B for major). Mixing tracks with matching or adjacent Camelot codes keeps your transitions in key.

Question 3

Can I detect the key by humming?

Accepted Answer

Yes. Click the Microphone button and hum or play the melody for at least 5-10 seconds. The detector analyzes the live audio stream and reports the most likely key. Singing a single sustained note will not work — the algorithm needs melodic material.

Question 4

How accurate is the key detection?

Accepted Answer

On clean studio recordings the detector is typically 80-95% accurate. Live recordings, heavily distorted instruments or songs with modulations may produce less certain results. The confidence score tells you how sure the algorithm is.