FIGURE 14-2: 440Hz sine wave tone recorded on an Android phone. What I've tried so farįirst of all, I tried to call the startTone() method twice, but soon I found out that the sounds played simultaneously. Even though the person is singing the same tone as the tone generator, the signal is much. This is then looped for the desired time. ToneGenerator Provides methodsto play DTMF tones(ITUT Recommendation Q.23), call supervisory tones (3GPP TS 22.001, CEPT), and proprietary tones(3GPP TS. Minimal example playing a middle A (440Hz) tone for 1000ms: new ToneGenerator ().play (440, 1000) The API works by generating a single wave and then filling a minimal sample with copies. OBS: I've seen some solutions for this problem using the MediaPlayer or the Ringtone class, but this question is on how to achieve this using ToneGenerator only, without using the TONE_PROP_BEEP2 or TONE_PROP_ACK tones. Android Tone Generator A simple single-file (<300LOC) tone generator library for Android > 21.I wanted to play an arbitrary tone, have an arbitrary pause/delay and then play the tone again. This class provides methods to play DTMF tones (ITU-T Recommendation Q.23), call supervisory tones (3GPP TS 22. Sometimes the sounds overlapped, other times they played faster than they should. No matter if you need to sound test and generate high frequency sounds or low frequency sounds, our frequency tone generator is your 1 best solution. Problem is, I didn't manage to get it quite right. I've been trying to achieve a double beep sound on an app I'm developing once a button is pressed.
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