PilferShush Jammer
阻止未授权使用内置麦克风
Features a passive jammer technique that engages the microphone thereby
blocking other apps from using it. But does NOT listen to or record any of the
audio from the microphone. It uses 0% CPU and no noticeable battery use. However
is not intended to be left on permanently due to the variety of triggers that
can cause audio_focus_state changes (VOIP etc).
Also features an active jammer that emits tones constrained to the NUHF
range of 18 kHz to 24 kHz range. User determined carrier frequency and drift
limits with rate for random tone emissions depending on the device capabilities.
For instance 20000 Hz carrier, drift limit 1000 Hz and rate slow - will output
random frequency between 19 kHz and 21 kHz approximately every second.
Audible artifacts are present during the NUHF tones but this may be changed in a
future release. Experimental white noise output may not be very effective at
blocking and is a somewhat annoying sound. The device speaker output may not
have enough amplitude to block unwanted NUHF signals - testing will determine.
* Manual start
* Notification post when running
* Auto stop and restart when telephony interrupts
* Currently relies on audio_focus_state changes for auto-switching
* Active jammer
blocking other apps from using it. But does NOT listen to or record any of the
audio from the microphone. It uses 0% CPU and no noticeable battery use. However
is not intended to be left on permanently due to the variety of triggers that
can cause audio_focus_state changes (VOIP etc).
Also features an active jammer that emits tones constrained to the NUHF
range of 18 kHz to 24 kHz range. User determined carrier frequency and drift
limits with rate for random tone emissions depending on the device capabilities.
For instance 20000 Hz carrier, drift limit 1000 Hz and rate slow - will output
random frequency between 19 kHz and 21 kHz approximately every second.
Audible artifacts are present during the NUHF tones but this may be changed in a
future release. Experimental white noise output may not be very effective at
blocking and is a somewhat annoying sound. The device speaker output may not
have enough amplitude to block unwanted NUHF signals - testing will determine.
* Manual start
* Notification post when running
* Auto stop and restart when telephony interrupts
* Currently relies on audio_focus_state changes for auto-switching
* Active jammer
版本
尽管下面提供了 APK 安装包的下载选项，但你应该注意，以这种方式安装将不会收到更新通知，这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。
下载 F-Droid-
该版本需要 Android 5.0 及以上版本。
此安装包由 F-Droid 构建并签名，且保证与此源代码 tarball 保持一致。
-
该版本需要 Android 5.0 及以上版本。
此安装包由 F-Droid 构建并签名，且保证与此源代码 tarball 保持一致。
-
该版本需要 Android 5.0 及以上版本。
此安装包由 F-Droid 构建并签名，且保证与此源代码 tarball 保持一致。
