![]() ![]() ![]() I/System.out: AudioSystem stream 9 STREAM_TTSĭ/: After 1st: 12ītw, if you want to research related C sourse code you can look at android_media_ToneGenerator.cpp, ToneGenerator.h, ToneGenerator.cpp AudioService. I/System.out: AudioSystem stream 8 STREAM_DTMFĭ/: After 1st: 26 I/System.out: AudioSystem stream 7 STREAM_SYSTEM_ENFORCEDĭ/: After 1st: 324 ![]() I/System.out: AudioSystem stream 6 STREAM_BLUETOOTH_SCOĭ/: After 1st: 332 I/System.out: AudioSystem stream 5 STREAM_NOTIFICATIONĭ/: After 1st: 16 I/System.out: AudioSystem stream 4 STREAM_ALARM Note: some humans may not be able to hear high frequency tones played by the sound generator. This app has the ability to generate noise from 1 hZ all the way up to 20,000 hertz. I/System.out: AudioSystem stream 3 STREAM_MUSICĭ/: After 1st: 19 A tone generator (also known as signal generator, noise generator, or frequency generator) lets you create a tone of varying frequency & waveform on demand. I/System.out: AudioSystem stream 2 STREAM_RINGĭ/: After 1st: 28 I/System.out: AudioSystem stream 1 STREAM_SYSTEMĭ/: After 1st: 17 Tone Check - Multiple audio tools combined into one single, simple to use app.Single Frequency Generator- Generate tone frequency ranging from 1 Hz 22000. I/System.out: AudioSystem stream 0 STREAM_VOICE_CALLĭ/: After 1st: 325 To play a sound of with a specific tone,we first have to create a sine wave sound.This is done in the following way. The thread then waits until object.notify () or object.notifyAll () is called by a separate thread. When object.wait () is called it will release the lock held on that object (which happens when you say synchronized (object) ), and freeze the thread. Output: I/System.out: AudioSystem stream -1 STREAM_DEFAULT This Java Tutorial can probably help you understand what using synchronized on an object does. Log.d(TAG,"After 1st: " + (System.currentTimeMillis() - startTime)) In a Thread started by OnClickListener.onClick(): long startTime = System.currentTimeMillis() In the constructor: mDTMFPlayer = new ToneGenerator(AudioManager.STREAM_VOICE_CALL, TONE_RELATIVE_VOLUME) Member variables: private ToneGenerator mDTMFPlayer But on the first call, it blocks for a long period of time. I'm calling ToneGenerator.startTone() repeatedly to issue short bursts of sound. Class Overview This class provides methods to play DTMF tones (ITU-T Recommendation Q.23), call supervisory tones (3GPP TS 22. ![]()
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