High-Frequency Noise Monitor cho Android

Cách thiết lập High-Frequency Noise Monitor APK:

Tệp APK (Bộ gói Android) là tệp thô của ứng dụng Android. Tìm hiểu cách cài đặt high-frequency-noise-monitor.apk tệp trên điện thoại của bạn trong 4 bước đơn giản:

1. Tải high-frequency-noise-monitor.apk xuống thiết bị của bạn bằng bất kỳ máy nhân bản tải xuống nào của chúng tôi.
2. Cho phép các ứng dụng của Bên thứ 3 (không phải cửa hàng Play) trên thiết bị của bạn: Đi tới Trình đơn » Cài đặt » Bảo mật » . Nhấp vào "Nguồn không xác định" . Bạn sẽ được nhắc cho phép trình duyệt hoặc trình quản lý tệp của mình cài đặt các APK.
3. Tìm tệp high-frequency-noise-monitor.apk và nhấp để Cài đặt: Đọc tất cả lời nhắc trên màn hình và nhấp vào "Có" hoặc "Không" tương ứng.
4. Sau khi cài đặt, ứng dụng High-Frequency Noise Monitor sẽ xuất hiện trên màn hình chính của thiết bị của bạn.

High-Frequency Noise Monitor APK có an toàn không?

Đúng. Chúng tôi cung cấp một số bản sao tải xuống Apk an toàn nhất để nhận High-Frequency Noise Monitor apk.

• Ngày phát hành: 2023-10-11
• Phiên bản hiện tại: 4.0
• Kích thước tệp: 994.00 kB
• Nhà phát triển: TOON,LLC
• Khả năng tương thích: Yêu cầu iOS 15.0 hoặc mới hơn. hoặc Android KitKat 4.4, Lollipop 5.0, Marshmallow 6.0, Nougat 7.0, Oreo 8.0, Pie 9.0, Quince Tart 10, Red velvet cake 11, Snow cone 12 hoặc sau đó phiên bản

"High-Frequency Noise Monitor" is a high-frequency noise analysis tool that specializes in high-frequency bands above 8 kHz. You may be exposed to artificial high-frequency noise on a daily basis that is inaudible to the human ear. This app allows you to monitor such high frequency noises and examine their occurrence. In general, noise may contain relatively high frequency components depending on its source, and this is classified as high frequency noise. For example, harmonic noise is radiated from the main body of an electronic device or the power lines of a power conversion device such as an AC-DC power adapter, and depending on its power level, it may affect peripheral devices. There are also devices that generate high-frequency noise to drive away vermin such as rats and weasels. The frequency of the sound varies depending on the type of vermin, and some devices incorporate sensors to change the volume and frequency over time. When such devices are installed in the vicinity, there are cases where they can lead to noise problems with adverse effects on human health. High-frequency noise does not often occur at a constant volume or frequency, but often occurs in a certain cycle or randomly. It is not easy to detect such high-frequency noise. This app collects randomly fluctuating high-frequency noise from the iPhone's built-in microphone and performs frequency analysis in real time. In addition, it retains the PCM data for 20 seconds just before the measurement is stopped and displays a spectrogram of FFT and octave band analysis. The spectrogram is a graph showing the analysis results of the frequency spectrum of sound, with time on the vertical axis, frequency on the horizontal axis, and signal strength in colors. You can visually monitor the occurrence of high-frequency noise. Features: # Main: Real-time frequency analysis function. - Real-time measurement: Automatically stops after a maximum of approximately 180 seconds. - Maximum frequency detection and power level display (dB unit in 20 μPa standard) - Time trace display: approx. 10 seconds - Display gain adjustment (Range): 3 levels (0dB - 90dB / -10dB - 80dB / -20dB - 70dB) # Analysis: FFT/octave band spectrogram analysis function (PCM data for 20 seconds immediately before the measurement is stopped is saved, and spectrogram analysis is performed.) - FFT spectrogram analysis (FFT) - Octave spectrogram analysis (OCT) - Display gain switching (Range): 3 levels - Playback function: approx. 20 seconds. - Playback sound filter (Filter): 8kHz high-pass filter to cut off low-mid range sound. # Snapshot (Snap): Save the analysis result as an image file. Operation Procedure: 1) Sound measurement and real-time frequency analysis (Main) Tap Start button in Main mode to start measurement. It displays the real-time instantaneous frequency analysis result and the trace of frequency time variation. The frequency and signal level at which the maximum level is detected can be displayed numerically. 2) Spectrogram analysis (Analysis) After measurement in Main mode, tap the Analysis button to perform spectrogram analysis. Tap FFT or OCT button to display the spectrogram by FFT or octave band analysis. 3) Snapshot By tapping Snap button, you can save the measurement result as an image file in "Photos". Notes: - The measurement of high frequency sounds depends on the sensitivity characteristics of the built-in microphone, so it may vary depending on the iPhone model. - Wireless (Bluetooth) headphones and headset are not supported. - At the time of the first access to Microphone and Photos after installing the app, you will be asked authorization to access them by the iOS system. If you have not enabled this setting, the app can not access them by privacy restrictions of the iOS system. Please enable the access permission on the iOS setting, "Settings > Privacy & Security > Photos or Microphone". Please visit our iOS app support page for more information on this app.

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