1.2 / March 30, 2016
(4.4/5) (3917)

Description

Dual channel function / waveform / signalgenerator for the speaker / headphone audio output.

No Ads, No Permissions, No In App Purchasing, No LimitedFeatures. Full Version.

Output is 16 bit for each left and right channels and at44.1kHz. Output will depend on your device hardware. Some devicehardware may may filter out the DC bias and low frequency signals.At high frequencies, the waveforms will be distorted due to limitednumber of samples for each waveform (for example at 4.41kHz, a sinewaveform will be approximated by only 10 points). Therefore this isfor fun/educational use, for critical applications use a realcalibrated function generator.

Left and Right audio channels can be assigned to either channel1 or channel 2.
Sine, Square & Triangular waveforms.
Frequency range from 1 mHz up to 22 kHz.
Amplitude as percentage 0-100%.
Set duty for square waveforms or skew triangular waveforms to getsaw waveforms.
Offset the phase of waveforms.
Sweep frequency or amplitude (Single, Repeat & Bouncemodes).
Amplitude Modulation (AM).
Frequency Modulation (FM).
Burst mode for a specific number of waveforms (1-10000).
White noise & pink noise Generator. Pink (1/f) noise falls ofat ~3dB per octave between 43 Hz and 44 kHz.
Memory slots to save & recall channel configuration.
Select values with spring slider or number pad.

More detailed explanation available on website

App Information Function Generator

  • App Name
    Function Generator
  • Package Name
    com.keuwl.functiongenerator
  • Updated
    March 30, 2016
  • File Size
    Undefined
  • Requires Android
    Android 2.2 and up
  • Version
    1.2
  • Developer
    keuwlsoft
  • Installs
    500,000 - 1,000,000
  • Price
    Free
  • Category
    Music & Audio
  • Developer
  • Google Play Link

Function Generator Version History

Select Function Generator Version :
  • 1.2 (3) - Latest Version
  • 1.1 (2)
  • Function Generator 1.2 APK File

    Publish Date: 2016 /3/31
    Requires Android: Android 2.2+ (Froyo, API: 8)
    File Size: 1.7 MB
    Tested on: Android 5.0 (Lollipop, API: 21)
    File Sha1: 7eb1ac6ad96233c6169b64942d9fb052d7d26a53
    APK Signature: dfb4d0c0d0d32d2acd6b216adedce1a3bd02841d
  • Function Generator 1.1 APK File

    Publish Date: 2015 /10/29
    Requires Android: Android 2.2+ (Froyo, API: 8)
    File Size: 1.5 MB
    Tested on: Android 4.3 (Jelly Bean, API: 18)
    File Sha1: d9588f3808c9d6a3d53709a890473246b22dcaac
    APK Signature: dfb4d0c0d0d32d2acd6b216adedce1a3bd02841d

keuwlsoft Show More...

Function Generator 1.2 APK
keuwlsoft
Dual channel function / waveform / signalgenerator for the speaker / headphone audio output.No Ads, No Permissions, No In App Purchasing, No LimitedFeatures. Full Version.Output is 16 bit for each left and right channels and at44.1kHz. Output will depend on your device hardware. Some devicehardware may may filter out the DC bias and low frequency signals.At high frequencies, the waveforms will be distorted due to limitednumber of samples for each waveform (for example at 4.41kHz, a sinewaveform will be approximated by only 10 points). Therefore this isfor fun/educational use, for critical applications use a realcalibrated function generator.Left and Right audio channels can be assigned to either channel1 or channel 2.Sine, Square & Triangular waveforms.Frequency range from 1 mHz up to 22 kHz.Amplitude as percentage 0-100%.Set duty for square waveforms or skew triangular waveforms to getsaw waveforms.Offset the phase of waveforms.Sweep frequency or amplitude (Single, Repeat & Bouncemodes).Amplitude Modulation (AM).Frequency Modulation (FM).Burst mode for a specific number of waveforms (1-10000).White noise & pink noise Generator. Pink (1/f) noise falls ofat ~3dB per octave between 43 Hz and 44 kHz.Memory slots to save & recall channel configuration.Select values with spring slider or number pad.More detailed explanation available on website
Metronome 1.1 APK
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Guitar Tuner 1.41 APK
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Straightforward guitar tuner. Single screenapp that starts in auto tune mode. Simply run the app, hit a stringand start tuning your guitar. Tune into the orange region for agood results or green for perfection.This app uses your microphone to detect the string being played andindicate if you should tune up or down.Pitch pipe function also included.The standard EADGBE guitar (not implemented for very small screendevices) indicates current note being played or allows fast noteselection in manual mode.Tuning range from 30 Hz (B0) to 4186Hz (C8), so can also be used totune other stringed instruments.
Audio Frequency Counter 1.01 APK
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Frequency counter based on the microphoneinput. Counts when the input rises or falls past a set level andconverts into into frequency or a time period. FOR INDICATION ONLY.Results depend on your device and its hardware. If you just want toknow the frequency of a sound with harmonics (e.g. mucialinstrument), a FFT based app such as keuwlsofts spectrum analyseror guitar tuner (both free) will be better. This app can providemore accurate frequency measurement for single frequency inputsignals. Features include:Display of triggered event count and frequency or timeperiod.Graph of input signal, 2.5 ms/div up to 640 ms/div.Gate time of 0.1s, 1s, 10s or 100s.Gain from x1 to x1000.Trigger on rise or fall.AC or DC coupling.Set a noise level so new event is not triggered until the signalhas first passed this level.More details can be found on the website.
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Wifi Analyser 1.04 APK
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Monitor strength of nearby wifi networks. Useto find a good location for your wifi hub. Or use to identify achannel with little overlap with neighbouring networks.App has 4 screens:• Gauge – shows the signal strength of the currently connectedwifi network. Also shows maximum, minimum and average values. Graphwith auto-scale & speed options.• Channel – shows how the wifi networks are spread across thechannels and overlap each other.• Graph – shows how the signal strength of all nearby networksvary with time. Auto-scale & speed options. Select whichnetworks to display.• List – Contains basic information for all the detectednetworks: name, mac address, frequency, channel, encryption typeand signal strength.Free & No Ads. For indication only. Enjoy.
Gauss Meter 1.01 APK
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This app uses the magnetic field sensor onyour device to measure magnetic flux density (B) in Gauss or Tesla.FOR INDICATION ONLY. Results depend on your device and itshardware. Your device must have a Magnetic Field Sensor for thisapp to function. Features include:Analogue dial to show current reading.Averaging.Maximum and minimum values.Gauss or Tesla units.4 time constant options. 3 Refresh speeds.Graph – Shows the time depedence of the magnetic field.CompassFerrous metal detector – sound frequency will change with gausslevel.Autoscale or manual (pinch & pan) Y-Axis.Calibrate option – If you have a calibrated gauss meter or knownmagnetic source, you can use this option to calibrate the meter.(However app is still for Indication Only).More details can be found on the website.
Pulse Echo Sonar Meter 1.01 APK
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Uses the audio autput to generate sound pulsesand then detects the echo on the microphone. The echo signal can bevisulised in a map, Fourier transformed or just as the time-serieswaveform. Great for investigating/demonstrating acousticsprinciples. Free & No Ads.RECORD_AUDIO Permission to use microphone to detect the echo.WRITE_EXTERNAL_STORAGE Permission is so that data can besaved.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 valuefrom RMS or absolute value. New line for each echo trace. Movedevice whilst pulse-echoing to generate a map.• Fast Fourier Transform (FFT) of 8192 data points to determinefrequency content between echo detect lines.• Peak frequency detection• FFT AveragingFor Indication Only. Use Ear Protection if required. Due to thelimits of the typical microphone dB range on most devices, distantecho signal are likely to be too weak to detect clearly unlessextra amplification or a strong echo is present.For fun/educational/research use. This is not ultrasound and NOTsuitable for any medical imaging. This app can create annoying loudsounds, so use ear protection if required.

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