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Spectroid for Android

By Carl Reinke Free

Developer's Description

Spectroid is a real-time audio spectrum analyzer with reasonable frequency resolution across the the entire frequency spectrum.

FAQ

Q: Why are the dB values negative?

A: Spectroid uses dBFS (Full Scale) where 0 dB is the maximum power that the microphone can measure, so the decibel values are negative because the measured power is less than the maximum power.

Q: Can I zoom in on the spectrum plot?

A: Yes, do a two-finger pinch-to-zoom gesture.

Q: Why are there discontinuities/gaps in the spectrum plot and waterfall?

A: Spectroid uses multiple FFTs overlapped in frequency in order to provide better frequency resolution at lower frequencies than a single FFT. The caveat of this method is varied impulse response and minor discontinuities in frequency. The upside is that it can efficiently produce a spectrum that better matches the frequency resolution of human audio perception. It's still probably not as good as your ears though!

Full Specifications

What's new in version 1.1.0

General

Release June 4, 2018
Date Added June 4, 2018
Version 1.1.0

Operating Systems

Operating Systems Android
Additional Requirements None

Popularity

Total Downloads 210
Downloads Last Week 2
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