Noise Spectrum Logger
FreeOffers In-App Purchases
2.0for iPhone, iPad and more
Age Rating
Noise Spectrum Logger Screenshots
About Noise Spectrum Logger
1. DESPLAY
The power spectrum of sound is displayed in the range of 20 - 20000Hz.
You can zoom in/out the spectrum by pinching in/out smoothly.
Also landscape orientation is supported.
2. USEFUL
While "hold" switch is ON, the maximum values are displayed in red color.
You can select "Mean" or "RMS" as the way of smoothing the spectrum out.
3. LOGGING
By sliding "log" switch, the logging mode is started.
To choose a past log from "History" tab, you can pull it from iPhone via email as a CSV file.
The CSV file can be edited with Excel etc.
4. AVAILABLE
Without cellular data service, the full functions are available.
5. BACKGROUND PROCESSING
You can use the logging function even when iPhone in your pocket.
6. TECHNICAL NOTE
Sample rate: 44.1kHz
Bit depth: 32bit float
FFT window function: Blackman
FFT samples: 8192
The power spectrum of sound is displayed in the range of 20 - 20000Hz.
You can zoom in/out the spectrum by pinching in/out smoothly.
Also landscape orientation is supported.
2. USEFUL
While "hold" switch is ON, the maximum values are displayed in red color.
You can select "Mean" or "RMS" as the way of smoothing the spectrum out.
3. LOGGING
By sliding "log" switch, the logging mode is started.
To choose a past log from "History" tab, you can pull it from iPhone via email as a CSV file.
The CSV file can be edited with Excel etc.
4. AVAILABLE
Without cellular data service, the full functions are available.
5. BACKGROUND PROCESSING
You can use the logging function even when iPhone in your pocket.
6. TECHNICAL NOTE
Sample rate: 44.1kHz
Bit depth: 32bit float
FFT window function: Blackman
FFT samples: 8192
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What's New in the Latest Version 2.0
Last updated on Jul 24, 2022
Old Versions
Built with Xcode 13.4 using the latest libraries.
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Version History
2.0
Jul 24, 2022
Built with Xcode 13.4 using the latest libraries.
1.9
Jun 12, 2021
Regenerated with Xcode 12.4 using the latest module.
1.8
Feb 16, 2020
Supported dark mode.
1.7
Jan 21, 2020
•Supported "dark mode".
•Supported "transfer files" by using iTunes or using Finder in macOS 10.15 or later.
•Supported "transfer files" by using iTunes or using Finder in macOS 10.15 or later.
1.6
Mar 21, 2019
•Arranged that rows are ordered by time in "History" tab.
•Included a link to "Privacy Policy".
•Included a link to "Privacy Policy".
1.5
Jan 3, 2018
Minor adjustments.
1.4
Nov 13, 2017
•Compressed the size of "CSV file" to half by Improving the format.
•Implemented "upside down" orientation not only on iPad but also on iPhone.
•Fixed a problem that ”hold” function does not work in version 1.3.
•Implemented "upside down" orientation not only on iPad but also on iPhone.
•Fixed a problem that ”hold” function does not work in version 1.3.
1.3
Sep 19, 2017
Minor adjustments.
Improved responsiveness.
Improved responsiveness.
1.2
Aug 16, 2017
•Fixed a rare crash.
•Improve responsiveness.
•Improve responsiveness.
1.1
Oct 10, 2016
The new three functions are added below:
• In "History" tab, CSV files are compressed in ZIP and attached to email.
• The real-time wave of sound is displayed in a new sub-window.
• You can adjust the baseline of power spectrum with the "Offset" values.
• In "History" tab, CSV files are compressed in ZIP and attached to email.
• The real-time wave of sound is displayed in a new sub-window.
• You can adjust the baseline of power spectrum with the "Offset" values.
1.0
Sep 25, 2016
Noise Spectrum Logger FAQ
Click here to learn how to download Noise Spectrum Logger in restricted country or region.
Check the following list to see the minimum requirements of Noise Spectrum Logger.
iPhone
Requires iOS 9.0 or later.
iPad
Requires iPadOS 9.0 or later.
iPod touch
Requires iOS 9.0 or later.
Noise Spectrum Logger supports English, Japanese
Noise Spectrum Logger contains in-app purchases. Please check the pricing plan as below:
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$3.99
