Pulse Echo Sonar Meter
Free App
Advertisements
About Pulse Echo Sonar Meter
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. Free & No Ads.
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.
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.
All Application Badges
Free
downl.
downl.
Android
2.2+
2.2+
Android app
App History & Updates
What's Changed
Removed unnecessary permissions, added link to privacy policy and made movable to SD card.
Removed unnecessary permissions, added link to privacy policy and made movable to SD card.
Version update Pulse Echo Sonar Meter was updated to version 1.01
More downloads Pulse Echo Sonar Meter reached 100 000 - 500 000 downloads
More downloads Pulse Echo Sonar Meter reached 50 000 - 100 000 downloads
More downloads Pulse Echo Sonar Meter reached 10 000 - 50 000 downloads
What are users saying about Pulse Echo Sonar Meter
N
by N####:
by N####:
Interesting. Still playing with settings and learning functions. So far I'm impressed.
N
by N####:
by N####:
Using a 1khz square wave, single pulse, continuous, and the echo window set between 1 and 3 meters, I can use the map graph to accurately measure the depth of my dresser without even getting out of bed! My roommates hate me. They're just jealous.
T
by T####:
by T####:
Top right time/dist display doesn't work at all. Tried changing various settings. No go.
J
by J####:
by J####:
I'm disappointed it didn't work at all on my phone.
N
by N####:
by N####:
Try a lower frequency 500-1000hz. It shows something..
N
by N####:
by N####:
Makes noise nothing but white on the display.
U
by U####:
by U####:
Have not had time for good look but seems interesting
M
by M####:
by M####:
Sweet work. We'll done.
N
by N####:
by N####:
Tank
E
by E####:
by E####:
By far the best echo sonar meter on the app store, only downfall please get rid of the green frame around the edges of the interface,
N
by N####:
by N####:
Why accessing my media and photos ?
C
by C####:
by C####:
... for ALL keuwlsoft tools apk.
W
by W####:
by W####:
Its great its a true sonar but could you please remove or add a setting to remove the case
N
by N####:
by N####:
Dont download this application plxxx
O
by O####:
by O####:
Dumb
N
by N####:
by N####:
Mic Hassn
X
by X####:
by X####:
bon marche
X
by X####:
by X####:
Neat options, but you really need a band pass filter to get only your signal and filter out noise.
X
by X####:
by X####:
Great
X
by X####:
by X####:
عالیست
X
by X####:
by X####:
Why accessing my media and photos ?
S
by S####:
by S####:
Good
X
by X####:
by X####:
Nice app thanks
X
by X####:
by X####:
Echoing
Q
by Q####:
by Q####:
خوبه
P
by P####:
by P####:
Wow
X
by X####:
by X####:
Worked great, liked the functionality of this app, I highly recommend it.
K
by K####:
by K####:
Great app! there are things to improve dough. the case/frame around the interface is a bit annoying. it'd be ok if it didn't use up effectively half of my screen area, the rest is a bit small as a result. could be fixed with a simple switch/check box in the settings. but the app works and i'm impressed.
X
by X####:
by X####:
Wildly inaccurate results but I wouldn't expect my phone to be accurate... with no less than three distinct microphones, which one does the app use? But, playing around with the settings for a bit, I finally at least got something other than 0.0m for a reading. Although, across multiple pings, I got results ranging from 0.2m to 15m, in a room no more than 5m long. I'll have to try with external speaker and mic...
U
by U####:
by U####:
AAA+ Way cool and still learning thank you
X
by X####:
by X####:
Useful application for education
X
by X####:
by X####:
No functionality
Y
by Y####:
by Y####:
I can't believe how much detailed software is this.best of best.tremendous.weldone man
Y
by Y####:
by Y####:
Gooood app
N
by N####:
by N####:
Great for sounding levels
Y
by Y####:
by Y####:
Amazing tool for those who need Ron calibration and know how to use it. Wonderful job! !!
X
by X####:
by X####:
Love all your apps :)
Y
by Y####:
by Y####:
how to use this app?
Y
by Y####:
by Y####:
TOTALLY GOOD!!!
by I####:
Seems to perform as described. Have tested on internal and external triggers and alternative mics. With mixed results. External sensing and trigger pulse seem to be more accurately mapped.