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.

Voice Spectrogram Logger Screenshots

iPad

iPhone

About Voice Spectrogram Logger

1. DESPLAY
The spectrogram of voice is displayed in the range of 20 - 2500Hz.
You can zoom in/out the spectrogram by pinching in/out smoothly.
Also landscape orientation is supported.

2. USEFUL
By moving "vivid" slider, the gradation of spectrogram is controlled.
The gradation is also controlled by moving "baseline" slider in "Setting" tab and selecting "Mean" or "RMS" as the way of smoothing the spectrogram out.

3. LOGGING
When "log" switch is ON, this app runs in the logging mode.
To choose a past log from "History" tab, you can pull it from iPhone via email as a PNG file.

4. AVAILABLE
Without cellular data service, the full functions are available.
The background processing is supported.

5. TECHNICAL NOTE
Sample rate: 44.1kHz
Bit depth: 32bit float
FFT window function: Blackman
FFT samples: 4096

What's New in the Latest Version 1.7

Last updated on Dec 11, 2022

Old Versions

Regenerated with Xcode 14.1 using the latest module.

Version History

1.7

Dec 11, 2022

Regenerated with Xcode 14.1 using the latest module.

1.6

Jun 12, 2021

Regenerated with Xcode 12.4 using the latest module.

1.5

Feb 16, 2020

Supported dark mode.

1.4

Feb 3, 2020

•Supported "dark mode".
•Supported "transfer files" by using iTunes or using Finder in macOS 10.15 or later.
•Added a method to control a range of frequency.

1.3

Mar 21, 2019

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

1.2

Jan 4, 2018

Minor adjustments.

1.1

Sep 19, 2017

Minor adjustments.

1.0

Sep 14, 2017

Feedback Report