| Type | Variant | ||||
|---|---|---|---|---|---|
2.5.20 50 APKs | |||||
Size: 1.73 MB Certificate: 1fc940bed5eed2956037a80f93b3920641ae4bc1 SHA1 signature: 7135d21046ee3c0ab521b1e1f2e10cddda9b3c51 Architecture: universal Screen DPI: ldpi (120dpi), mdpi (160dpi), tvdpi (213dpi), hdpi (240dpi), xhdpi (320dpi), xxhdpi (480dpi), xxxhdpi (640dpi) Device: phone | |||||
2.5.20 50 APK | |||||
Size: 1.14 MB Certificate: 1fc940bed5eed2956037a80f93b3920641ae4bc1 SHA1 signature: 5936f5ce6bf681b3bb857e948f8c5855645cf1eb Architecture: universal Screen DPI: mdpi (160dpi), hdpi (240dpi), xhdpi (320dpi), xxhdpi (480dpi), xxxhdpi (640dpi) Device: phone | |||||
Download Audio Test (Tone generator and power measurement) APK free
Test audio path gain by generating tones and at the same time recording it
The Test is done at many different frequency so to produce the graph of the audio path response.
The purpose of the Test is to compare the audio path gain of a system composed of an amplifier and loudspeaker but you can test also only a loudspeaker or earphone. The phone generate a list of tones(frequencies), the signal is acquired from the microphone and the relative power is calculated for each frequency. Please note that 0dB is an undetermined value so the measures are relative and not absolute values.
A teacher used this App to do an experiment in his class, he was able to find the speed of sound using a phone and a cardboard tube. Determining the loudest frequencies, then these are the resonance frequencies and will lead to the speed of sound because the length of the tube is related to the wavelength of the resonant frequencies.
The tests are in the internal directory of the App to improve compatibility with Android 10 (Android/data/com.fbrlcu.audiotest)
The purpose of the Test is to compare the audio path gain of a system composed of an amplifier and loudspeaker but you can test also only a loudspeaker or earphone. The phone generate a list of tones(frequencies), the signal is acquired from the microphone and the relative power is calculated for each frequency. Please note that 0dB is an undetermined value so the measures are relative and not absolute values.
A teacher used this App to do an experiment in his class, he was able to find the speed of sound using a phone and a cardboard tube. Determining the loudest frequencies, then these are the resonance frequencies and will lead to the speed of sound because the length of the tube is related to the wavelength of the resonant frequencies.
The tests are in the internal directory of the App to improve compatibility with Android 10 (Android/data/com.fbrlcu.audiotest)
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What´s new
minor improvement
More info
Updated in
2022-03-24
Size
1016.22 KB
Current version
2.5.20
Requires Android
4.2 and up
Content Rating
Everyone
Offered By
Fabris Luca
Developer [email protected]
APKs installer
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