Table Of Contents
Latest update [menu]
Fixed saving to work on Android 10. Other minor fixes.
Description [menu]
Uses the audio autput to generate sound pulses and then detects the echo on the microphone. The echo signal can be visulised in a map, Fourier transformed or just as the time-series waveform. Great for investigating/demonstrating acoustics principles.
RECORD_AUDIO Permission to use microphone to detect the echo. WRITE_EXTERNAL_STORAGE Permission is so that data can be saved.
Features/Specifications:
• Sampling frequency 44.1 kHz.
• Sampling duration 0.001 s to 5 s.
• Single / Continuous modes.
• Save Data in CSV files.
• Pulse Generation:
• Single/Train/Chirp.
• Square/Sine waveforms.
• Tukey/Hanning Envelopes.
• Pulse frequency 20 Hz to 22.05 kHz.
• Pulse duration up to 1 s.
• MAP - Visualise the echo. Colour or Black and White. Pixel value from RMS or absolute value. New line for each echo trace. Move device whilst pulse-echoing to generate a map.
• Fast Fourier Transform (FFT) of 8192 data points to determine frequency content between echo detect lines.
• Peak frequency detection
• FFT Averaging
For Indication Only. Use Ear Protection if required. Due to the limits of the typical microphone dB range on most devices, distant echo signal are likely to be too weak to detect clearly unless extra amplification or a strong echo is present.
For fun/educational/research use. This is not ultrasound and NOT suitable for any medical imaging. This app can create annoying loud sounds, so use ear protection if required.
How to install Pulse Echo Sonar Meter APK for Android [menu]
Download Pulse Echo Sonar Meter APK file (com.keuwl.pulseechosonar_7_4769984.zip) from SameAPK.com, then follow these steps:
Update Phone Settings
- Go to your phone Settings page
- Tap Security or Applications (varies with device)
- Check the Unknown Sources box
- Confirm with OK
Go to Downloads
- Open Downloads on your device by going to My Files or Files
- Download Split APKs Installer (SAI)
- Download and unzip file you already downloaded (com.keuwl.pulseechosonar_7_4769984.zip)
- Open Split APKs Installer and follow steps on this app.
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install Pulse Echo Sonar Meter APK on Windows 7/8/10 or MAC PC? [menu]
Download Pulse Echo Sonar Meter APK file(com.keuwl.pulseechosonar_7_4769984.zip) from SameAPK.com to your PC (ex: /Users/xxx/Downloads/(com.keuwl.pulseechosonar_7_4769984.zip)), then follow these steps:
Using Emulator:
- Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
- Download and unzip file com.keuwl.pulseechosonar_7_4769984.zip.
- Using ADB or Split APKs Installer same as install for Android.
Pulse Echo Sonar Meter APK Pros & Cons [menu]
Pros
- This app is safe, it's not require high risk permissions
- Compatible with 32 bit device (most Emulator using 32bit arch CPU)
- Compatible with 64-bit device (some android device and current Bluestacks)
Cons
Everything is good.
