Many universities (University of Chicago, Heidelberg) have digitized their Indology holdings; you can download for research purposes. Purchase the Kaivalyadhama edition (approx $8-10) or borrow via interlibrary loan. The scanned 1929 edition on archive.org is perfectly usable for study, though missing the English translation.
This is a structured guide to understanding and accessing the (स्वर चिन्तामणि), a seminal text on the science of Swara Yoga (the yogic study of breath and sound). Swara Chintamani Pdf
