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  • #: 203669
  • Price: $2.99 In Apple Store
  • Category: Music
  • Updated: 2014-06-29
  • Current Version: 2.3.1
  • 2.3.1
  • Size: 1.70 MB
  • Language: English
  • Seller: Shun Murabayashi
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.2 or later
  • © 2009-2010 bismark
  •  Add to Favorite apps



bs-spectrum is a simple FFT spectrum analyzer application.

This application calculates FFT (Fast Fourier Transform) of the sound which is recorded by the iPad & iPhone's internal mic. The calculated data is displayed as graph.


Option Setting:

- Mode: Linear, Logarithmic

- Window: Rectangle, Hamming, Hanning, Blackman

- Decay: 250[ms], ... 4[s]

- Amplitude Offset

What's New in Version 2.3.1

Fixed bug

View iPhone screenshots | View iPad screenshots

iPhone Screenshots

bs-spectrum iPhone Screenshot 1

iPad Screenshots

bs-spectrum iPad Screenshot 1
bs-spectrum iPad Screenshot 2
bs-spectrum iPad Screenshot 3
bs-spectrum iPad Screenshot 4

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Rated 3/5 based on 2 customer reviews.


4/5 stars

Very useful

This app will be very nice to have for when I tune rooms for sound systems. I would have given 5 if I could increase the db level to monitor the frequencies. I need at least 90db

3/5 stars

Useful app, but...

This is a very useful app, but i wish you were able to hold the iPad in portrait view since the mic on the iPad is on the top... The app doesn't auto-rotate.


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The information may be outdated (2017-03-08 17:35:30). For actual information go to iTunes

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