re: Ann: iSonea Achieves TGA Approval for Lis... The Masimo device only measures respiratory rate, i.e. Breaths per minute. Isonea 'passive' IP measures and quantifies adventurous breath sounds, which is a totally different ball game. The current focus and entry in to the market is with wheeze, Asthma and the personal market, but there is much more to their story then the 1st chapter.