One might wonder why Brouncker chose 17 equal semitones and again the reason was a mathematical one for he derived this from taking ratios based on the golden section.
Isa maaaring magtaka kung bakit Brouncker napili 17 pantay semitones at muli ang mga dahilan ay isang matematiko para sa isa siya nagmula ito mula sa pagkuha ratios base sa ginintuang section.