Pulse Echo Sonar Meter

Pulse Echo Sonar Meter

OS : android Size : 5.63 MBVersion : 1.07

Updated : January 25, 2026

appIntroduction

Pulse Echo Sonar Meter: A Deep Dive into Acoustic Exploration

Pulse Echo Sonar Meter is a specialized scientific utility application for Android devices that transforms your smartphone into a powerful acoustic analysis tool. Its primary purpose is to generate sound pulses, capture their returning echoes via the device's microphone, and then visualize that data in multiple, sophisticated ways. This app differentiates itself from simple sound meter apps by offering a comprehensive suite of features typically found in professional audio analysis software, including Fast Fourier Transform (FFT) analysis, waveform mapping, and highly configurable pulse generation. It is designed not for casual use, but for educators, students, acoustics enthusiasts, and hobbyists who want to explore the principles of sonar and sound wave behavior in a hands-on, practical environment.

Exploring Pulse Echo Sonar Meter: Core Functions and Mechanics

At its heart, Pulse Echo Sonar Meter operates on the fundamental principle of active sonar. The app sends out a user-defined acoustic pulse and then meticulously records the returning signal. The core mechanics involve precise control over this entire process, from pulse creation to echo interpretation.

Pulse Generation and Control

Pulse Echo Sonar Meter provides extensive control over the emitted sound pulse. Users can select from three primary pulse modes: Single, Train (a repeated burst of waveforms), or Chirp (a frequency sweep). The waveform itself can be shaped as a Sine or Square wave, and users can apply a Tukey or Hanning envelope to soften the pulse's onset and offset, reducing harsh audio artifacts. The frequency is tunable from 20 Hz to 22.05 kHz, and pulse duration can be set for up to one second. This granular level of control allows for tailoring the pulse to specific experimental conditions, whether trying to detect a distant wall or analyzing the resonant frequency of a small object.

Data Acquisition and Visualization

Once a pulse is emitted, the app samples the microphone input at a professional-grade 44.1 kHz for a duration configurable between 0.001 and 5 seconds. The resulting data is not presented in just one way but through three distinct visualization modes:

  Map View: This mode creates a visual sonar map. Each new echo trace is plotted as a new line, and by moving the device while pulsing, a user can build a 2D image of their acoustic environment. Pixel values can be based on either the Root Mean Square (RMS) or absolute value of the signal.

  FFT Analysis: This powerful tool performs a Fast Fourier Transform on 8192 data points from the echo, breaking the complex sound wave down into its constituent frequencies. It can display this data as a standard line graph or as third-octave bars, complete with peak frequency detection and averaging functions to isolate consistent signals from noise.

  Trace View: This displays the raw time-series waveform of the echo. The display is highly interactive, allowing users to adjust the timebase (from 0.05 ms/div to 1000 ms/div) and amplitude scaling (0.005 %/div to 50 %/div) for detailed inspection. Threshold lines for triggering and echo detection can be dragged and adjusted manually directly on the graph.

The Developer and Platform for Pulse Echo Sonar Meter

Pulse Echo Sonar Meter is developed by a specialist or team focused on creating scientific and educational tools for mobile platforms. The app reflects a deep understanding of both acoustics and Android programming, leveraging the device's hardware to its full potential for audio processing. It is available exclusively on the Android platform through the Google Play Store. The app requires permissions to record audio (for echo detection) and write to external storage (for saving data files), which are essential for its core functionality. Its performance is dependent on the quality of the device's microphone and speaker.

Key Functional Systems of Pulse Echo Sonar Meter

Configurable Triggering and Detection System

Pulse Echo Sonar Meter uses a sophisticated dual-threshold system to manage data acquisition. A "Pulse Level" threshold (red line) determines when to start recording data after a sound is detected. An "Echo Level" threshold (orange line) is then used to automatically identify the echo's arrival time within a user-defined window (marked by blue and green lines). This system ensures that the app captures the relevant data accurately, whether triggered by its own internal pulse or an external sound like a hand clap.

Comprehensive Data Export and Analysis Suite

Beyond real-time visualization, Pulse Echo Sonar Meter functions as a data logger. The "Save" feature exports detailed CSV files containing the complete time-series data of each scan and the results of the FFT analysis. This file includes metadata like timestamp, sampling rate, and identified peak frequencies, allowing for further analysis in spreadsheet applications or other scientific software. This makes it an invaluable tool for academic projects and experiments where data must be documented and shared.

Advanced Settings and Profile Management

Recognizing that experiments require repeatable conditions, the app includes a robust settings memory system. Users can store all current configurations—including pulse parameters, threshold levels, sound speed, and display settings—into one of five memory slots. These profiles can be recalled instantly, allowing for quick switching between different experimental setups. Three default configurations are also provided to help users get started quickly.

User Feedback and Practical Highlights

  Depth of Features: Users consistently highlight the app's remarkable depth, noting that its feature set rivals that of dedicated desktop audio software.

  Educational Value: It is widely praised as an exceptional tool for demonstrating principles of acoustics, sonar, and the Doppler effect in a classroom or personal learning setting.

  Hardware Dependency: Performance and the ability to detect clear echoes are highly dependent on the quality of the Android device's microphone and speaker. Results can vary significantly between devices.

  Learning Curve: The sheer number of options and technical parameters presents a steep learning curve for users unfamiliar with concepts like FFT, windowing, or trigger thresholds.

  Practical Limitation: The developer is transparent that the app is for "indication only." The dynamic range of typical smartphone microphones limits long-range echo detection unless the reflecting surface is very close or the echo is exceptionally strong.

Why Pulse Echo Sonar Meter Is Worth Trying

Pulse Echo Sonar Meter is an outstanding application for a specific audience: the curious learner, the educator, and the hobbyist physicist. Its primary strength lies in its ability to make abstract acoustic principles tangible and visually engaging. While it is not a tool for professional surveying or medical imaging, its value as an educational and experimental platform is immense. If you have an interest in how sound behaves, want to demonstrate sonar concepts, or simply enjoy using your phone's hardware for scientific exploration, this app offers a unique and powerful experience that is unmatched in its category. It turns your Android device into a portable acoustic lab, making it a truly worthwhile download for the intellectually adventurous.

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appInformation
  • Owner : keuwlsoft
  • System : android
  • Category : Music & Audio
  • Update Time : January 25, 2026
  • Version : 1.07
  • Package ID : com.keuwl.pulseechosonar
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