Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

لقطات الشاشة لـ Noise Spectrum Logger

iPad

iPhone

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

تحديث لأحدث إصدار 2.0

Last updated on 24/07/2022

الإصدارات القديمة

Built with Xcode 13.4 using the latest libraries.

Version History

2.0

24/07/2022

Built with Xcode 13.4 using the latest libraries.

1.9

12/06/2021

Regenerated with Xcode 12.4 using the latest module.

1.8

16/02/2020

Supported dark mode.

1.7

21/01/2020

•Supported "dark mode".
•Supported "transfer files" by using iTunes or using Finder in macOS 10.15 or later.

1.6

21/03/2019

•Arranged that rows are ordered by time in "History" tab.
•Included a link to "Privacy Policy".

1.5

03/01/2018

Minor adjustments.

1.4

13/11/2017

•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.

1.3

19/09/2017

Minor adjustments.
Improved responsiveness.

1.2

16/08/2017

•Fixed a rare crash.
•Improve responsiveness.

1.1

10/10/2016

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.

1.0

25/09/2016

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