The iNVH app is a unique application developed by Robert Bosch Engineers, to overcome the challenges of field engineers today – An innovative tool to support subjective noise assessments in the field and easy connectivity to NVH engineers. The tool comes in with a simple to use sound level meter (SLM) module, overall level vs. time module , raw data recorder and bundled inapp purchase modules (FFT, Octaves & FFT vs Time). The app uses basically the inbuilt microphones which makes it very convenient. The app comes built in with latest calibration values .However, there is also a sound calibration tool included to improve the accuracy of the noise measurement. This calibration tool is an octave band based tool, as compared to most single value calibration available in the market. The octave band calibration allows the user to do a sensitivity correction in each and every frequency band. For certain mobiles the level of accuracy may vary depending on the physical condition of iPhone , hence it is always advisable to do a calibration with an already calibrated phone in the market in order to improve the accuracy.
Thanks to the interactive and simple GUI, in addition to being a tool to support subjective assessments, the app can also be used by students who intend to do some simple acoustic measurements for their projects, or operator safety assessments and many other applications. Another feature of the app allows user to record the raw data to be saved and then sent to R&D engineers for further support or feedback. Theoretically there is no limitation to the size of data that can be stored, and it is depended on the memory available for mobile.
Currently the app only supports iphones and not ipads.