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Noise Spectrum Logger

價格:免費

更新日期:2019-03-21

檔案大小:11 MB

目前版本:1.6

版本需求:需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。

支援語言:日語, 英語

Noise Spectrum Logger(圖1)-速報App

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.

Noise Spectrum Logger(圖2)-速報App

The CSV file can be edited with Excel etc.

4. AVAILABLE

Without cellular data service, the full functions are available.

This app is able to run on iOS 6.

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

Noise Spectrum Logger(圖3)-速報App

FFT samples: 8192

Noise Spectrum Logger(圖4)-速報App

支援平台:iPhone, iPad