Spl spectrum analyzer Android App

The description of Spl spectrum analyzer: Spl spectrum analyzer measures and analyses sound pressure level (amplitude in decibels) and sound frequency spectrum in real time (rta) using fft. It is very easy to use and offers a lot of useful features: high rta refreshing rate and frequency resolution adjustable sound pressure level amplitude scale (up to 150 decibels) rta peak hold function flat reference line local peaks... Rta measurement can be recorded on 3 separate channels. User can later compare spl (db) and frequency response charts between the channels. It also includes a signal (tone) generator which helps us measuring the frequency response of a sound system. Input output can be adjusted to internal aux or bluetooth. However all i o options and combinations do not work on all devices. Microphone can be accurately calibrated for each frequency band separately. ..