| 类型 | 变体 | ||||
|---|---|---|---|---|---|
2.5.20 50 APKs | |||||
尺寸: 1.73 MB 证书: 1fc940bed5eed2956037a80f93b3920641ae4bc1 SHA1 签名: 7135d21046ee3c0ab521b1e1f2e10cddda9b3c51 建筑学: universal 屏幕 DPI: ldpi (120dpi), mdpi (160dpi), tvdpi (213dpi), hdpi (240dpi), xhdpi (320dpi), xxhdpi (480dpi), xxxhdpi (640dpi) 设备: phone | |||||
2.5.20 50 APK | |||||
尺寸: 1.14 MB 证书: 1fc940bed5eed2956037a80f93b3920641ae4bc1 SHA1 签名: 5936f5ce6bf681b3bb857e948f8c5855645cf1eb 建筑学: universal 屏幕 DPI: mdpi (160dpi), hdpi (240dpi), xhdpi (320dpi), xxhdpi (480dpi), xxxhdpi (640dpi) 设备: phone | |||||
下载 Audio Test (Tone generator and power measurement) 无 APK
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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什么是新的
minor improvement
更多信息
更新于
2021-08-04
尺寸
1016.22 KB
当前版本
2.5.20
需要安卓系统
4.2 and up
内容评级
Everyone
由...提供
Fabris Luca
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