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Spectral Eye

Spectral Eye

by Secret Base Design

84 ratings
57 reviews
🔧 Utilities
🎵 Music
Free

Details

Released
August 1, 2012
Updated
January 25, 2017

Features

Developer

Secret Base Design
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Spectral Eye screenshot #1 for iPhone
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Spectral Eye screenshot #3 for iPhone
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About

Visualize the harmonic frequencies that make up sounds. This app uses a Fast Fourier transform to display sound components in a unique spiral arrangement, aligning octaves. It's ideal for musicians and sound enthusiasts to understand tonal differences and musical structures.

✓Spiral frequency spectrum display
✓Fast Fourier transform analysis
✓Visualizes harmonic frequencies
✓Adjustable synthesizer with sine waves
✓MIDI input for triggering notes
✓Displays relative frequency strengths
Show original description

What users say about Spectral Eye

Reviews of Spectral Eye are mostly positive: the Music app is rated 4.9/5 from 84 App Store ratings. What users like most: innovative and useful tool, simple and excellent design. Top complaints: not updated in years, microphone stays on. Summarized from real user reviews.

Positive things

  • 💡Innovative and useful tool
  • 👍Simple and excellent design
  • 🤩Fun and interesting to use
  • 🔬Great for sound analysis
  • 🎵Visualizes sound frequencies well
  • 🆓Free to use and enjoy
  • ✨Magical and brilliant concept
  • 💯Accurate and clear spectra
  • 🎶Helps with ear training
  • 🎸Useful for instrument tuning
  • 🗣️Good for voice tuning
  • 🎛️Neat way to interact with sound
  • 🚀Fast and stable performance
  • 🎨Lovely interface
  • 🌟Stellar tool for sound enthusiasts

Negative things

  • ⏳Not updated in years
  • ❌Microphone stays on
  • 📉Lacks advanced features
  • 🤔Unclear feature functionality
  • 🚫No 432hz tuning option
  • ⚠️Development seems dead
  • 🔌Issues with Audiobus 3/AUM
  • 📊No frequencies on chart
  • ⏱️Graphs too fast to see
  • 🖱️Amplitude harder to follow
  • 🗺️Not landscape mode
  • 📈FFT divisions don't line up with notes
  • 🔊Bass line muddy/indiscernible
  • ❓Unexplained interface elements
  • 🔇Not useful for mixing/production
See all reviews

What's New in Spectral Eye

2.0

January 25, 2017

This app has been updated by Apple to display the Apple Watch app icon. MIDI support added. Updated for iOS 10.

More

User reviews

Most RecentHighest RatedLowest Rated

Best app ever

This is my favorite app of all time. If it goes away I’m gonna pay someone to build a similar app for me.
Nnineinchsky

Great for drums

This is the most reliable and accurate tuner I've found so far. I mainly use it to identify the pitch of drums and cowbells. I love it.
DDrummingcri

Too bad, it’s so good

A really great app but not updated in years and hasn’t flushed out its potential. Nonetheless, an excellent tool. One of my only negative remarks is that one can’t use 432hz as pitch tuning rather than “concert” 440hz.
QQuickenties

Is it working??

Not for me…
INI dont need a Nickname!!

Extraordinary !

… Meant in the nicest possible way:

This App is innovative, amusing, and useful

Thank You for making it, and for giving it free
PPortaDisk
See 52 more reviews

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User experience

🐞

Reported Bugs

7 issues

Microphone stays on 24/7

Bug

Does not work for some users

Bug

App does not launch with AUM

Bug

No audio received from Audiobus 3

Bug

Error when launching with AUM

Bug

Script error in graphic content

Bug

Display reacts to loud noise in silent room

Bug
✨

Requested Features

14 requests

Add 432hz tuning option

Feature

Show octave number of a note

Feature

Improve microphone control (only when active)

Feature

Make app open source

Feature

Add iOS versions for Audiobus 3/AUM

Feature

Implement a circle of fifths version

Feature

Pro version with more features

Feature

Add background core-midi-out functionality

Feature

Prevent screen lock during use

Feature

Add a decaying hold feature

Feature

Support landscape mode

Feature

Maximizable screen display

Feature

Model thirds and fifths

Feature

Finer FFT resolution

Feature

FAQ

What does Spectral Eye do?

Spectral Eye analyzes incoming sound and displays its constituent frequencies in a unique spiral spectrum. It uses a Fast Fourier transform to break down sounds into individual sine waves, revealing the harmonic content that defines different instruments and tones.

How does the spiral display work?

The app arranges frequencies into a spiral where octaves line up as rays emanating from the center. This allows for a clear visualization of musical structure, as frequencies an octave apart will appear on the same line from the center.

Is Spectral Eye free to use?

Yes, Spectral Eye is completely free to use. The developers have stated it will remain free with no pop-up ads or nag screens, focusing on providing a clean and enjoyable experience for users.

What are the key features for musicians?

Musicians can use Spectral Eye to see how different instruments produce unique sounds by visualizing their resonant frequencies. It also includes a simple synthesizer and MIDI input, allowing users to generate sounds and control external MIDI synthesizers while observing their frequency composition.

Can I use Spectral Eye to learn songs?

Yes, you can use Spectral Eye to help pick out the notes to a song. By watching the display as a song plays or as you play an instrument, you can see where the notes land on the frequency spectrum, aiding in transcription and learning.