# e-shunt — Sound can be visually examined

> Visualizes sound frequencies, waveforms, and records audio for study and research. (iPhone/iPad app by e-skett Corp..)

- Source: https://appshunter.io/ios/app/e-shunt/id1099081987 (this page in markdown: same URL + `.md`)
- Developer: [e-skett Corp.](https://appshunter.io/developer/591591895)
- Category: Education, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: American English, Japanese
- Released: 2023-01-09
- Data updated: 2026-08-22
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/e-shunt/id1099081987/reviews.md

## What is e?

e-shunt is an application for the visual study of sound.
Features
•View the frequency components of sound (displays the loudness of high and low pitched sounds)
•View sound waveforms
•Record (up to 3 minutes)
•Playback
•Send recorded files via e-mail or AirDrop
•Change the appearance
Other features include the ability to record sound frequency components as a CSV file (200 Hz to 3 kHz) for research purposes and a bar graph displaying the ratio of high to low tones.
For input, in addition to the built-in microphone, a microphone connected to Bluetooth or Lightning terminal can be used.

## Key features

- View frequency components
- Display sound waveforms
- Record up to 3 minutes
- Playback recorded audio
- Export frequency data as CSV
- Customize appearance

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/e-shunt/id1099081987/reviews.md

### 5/5 — 狭窄音をバーグラフで分かるなんて凄い

*2024-06-07*

各患者に合わせて変更可能な基準周波数（通常のシャント音）内の平均値 と検出周波数（狭窄音）内のピーク値 の差が、設定した閾値を越えるとバーグラフを赤く表示できる。例えば、狭窄部位がわかっていて、PTAをよくする患者にPTAとなる場合の閾値を事前に設定すれば、バーグラフが青から赤に変わるようになるならエコー検査をしてみよう！になる。いいなーコレ。

## Frequently asked questions about e

### What is e-shunt?

e-shunt is an application designed for the visual study of sound. It allows users to see the frequency components and waveforms of audio, and to record and play back sounds.

### Can I record audio with e-shunt?

Yes, e-shunt allows you to record sound for up to 3 minutes. You can then play back these recordings within the app.

### What kind of audio data can e-shunt export?

e-shunt can export sound frequency components as a CSV file, covering the range of 200 Hz to 3 kHz. This is useful for research purposes.

### Does e-shunt support external microphones?

Yes, e-shunt can use input from the built-in microphone, as well as microphones connected via Bluetooth or Lightning terminals.

### What is the age rating for e-shunt?

e-shunt has an age rating of 4+, making it suitable for a wide range of users.

### On which devices can I use e-shunt?

e-shunt is available on iPhone, iPad, and iPod devices.

### How often is e-shunt updated?

The latest version of e-shunt is 1.3, and it was last updated on January 16, 2026. This indicates a recent update and ongoing support.

### Does e-shunt have ads?

No, e-shunt does not contain advertisements. It is a completely ad-free application.

## Version history (last 3 releases)

### 1.3 — 2026-01-16

Fixed a bug in receiving files

### 1.2 — 2025-01-28

Improved problems with external input

### 1.1 — 2023-01-10

No release notes.

## More apps by e-skett Corp.

- [e-calcFree](https://appshunter.io/ios/app/e-calcfree/id591591892)
- [e-calcPro](https://appshunter.io/ios/app/e-calcpro/id603391408)
- [成金電卓](https://appshunter.io/ios/app/id614242437)
- [e-scope 3-in-1](https://appshunter.io/ios/app/e-scope-3-in-1/id660574048)
- [ロックスクリーンカレンダーメーカー(LSCメーカー)](https://appshunter.io/ios/app/lsc/id730807645)
- [e-Recorder](https://appshunter.io/ios/app/e-recorder/id828269993)

All apps by e-skett Corp.: https://appshunter.io/developer/591591895

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*