JGFFTViewer is a live FFT viewer to see the frequencies in sound around you and a noise meter(or sound meter). You can also view the actual waveform of the audio signal. If the curved line of frequencies becomes a colored line in red, then it tell you that the environment around you is not quiet, or not suitable to have a time you have to concentrate.

JGFFTViewer_ alternatives

Teslameter 11 - Metal Detector

Teslameter 11 takes advantage of the built in magnetometer in your iPhone/iPad, allows you to monitor the strength of magnetic field all around. There are a range of real-life applications for this useful item, such as: metal detector, AC magnetic fields, or finding low-magnetic places for sleeping (especially for babies) and of course, why not fun as well?Features:- Display the raw 3 axes x, y and z magnetometer values and a nice analog meter to display the magnitude - Display the graphical history of magnitude (size, strength) of the magnetic field- Support multiple units: tesla and gauss- Record and export the data to email for further analysis- Define your own threshold alert with audible alarm when it encounters a field (metal, speakers, etc. )- Sensitivity customizable- Start or stop the teslameter at any time- Enable/disable auto-lock screen

  • rating 4.14754
  • size 20.3 MB

Sound Level Analyzer Lite - Simple dB Meter

Sound Level Analyzer Lite is a sound/noise level meter app for iPhone. This app is a free edition that is simplified the powerful sound analyzing tool, Sound Level Analyzer.Available in variety of applications as the neighboring environmental noise measurement, audio system check, vehicle interior noise check, sound check of live events, and more. Please visit our iOS App Support page for more information on this app.

  • size 4.5 MB

VisualAudio Real Time Audio Spectrum Analyzer

VisualAudio is an acoustic analysis tool for science and engineering applications where quantitative frequency and level data are needed. In real-time analysis mode it works as both a spectrum analyzer and decibel meter. Explore phonetics and spoken words, measure the frequency response of audio equipment, or analyze animal and bird sounds.

  • rating 4.71429
  • size 45.5 MB

Audio Signal Generator including Sweeps & Noise

This is the highly recommended and praised Function Generator App - an amazingly great and powerful tone generator. Enriched with a vast amount of features yet it is extremely intuitive and designed for simplicity. The Function Generator is AMAZINGLY INTUITIVE and SIMPLE AND THESE ARE THE ADVANCED SETTINGS/FEATURES (upgrade to PRO required):=> Extending The Frequency Range=> Extending The Sweep Times=> Changing Min/Max Slider Frequency Ranges => Changing Max Sweep Time Slider Range=> Changing Signal Amplitude=> Enabling Of The Sweep Repeat / Wobble Function=> Frequency Slider Setting to Linear or Logarithmic=> Left/Right Channel Individual Selection=> Permanently Saving Custom Presets=> Saving Of Endless Number Of Audio Configurations=> Phase Out Setting (Phase shift of 180 of the generated signal)=> BPM (Beats per Minute) Feature=> Dual Function Generator=> Background Theme Selection (Light/Dark)

  • size 18.9 MB

Signal Generator: Audio Test Tone Utility

Signal Generator is an app that produces audio test tones. The basic app produces sine waves, and it can be extended and customized (via in-app purchases) to produce white noise, pink noise, frequency sweeps, and (on iPhone 4 and better) square waves, sawtooth waves, and triangle waves. This app can be used to: Test Speakers and Headphones Balance your Home Theater System Tune Your Car Audio System Mask Environmental Noise Burn In Headphones Tune Musical Instruments

  • size 7.9 MB