Easily generate audio tone of a specific frequency and volume in Android.

Quick Start

val zenTone = ZenTone()

zenTone.play(frequency = 440f, volume = 10)

Use playbackCount = 0 for unlimited playback, or pass a positive number such as 1 or 2 to stop automatically after that many generated signal writes.

ZenTone accepts the following audio configuration parameters:

• sampleRate: defaults to SampleRate.Hz44100; supported sample rates are exposed through the SampleRate enum
• channelMask: defaults to AudioFormat.CHANNEL_OUT_MONO; supports AudioFormat.CHANNEL_OUT_MONO and AudioFormat.CHANNEL_OUT_STEREO

Example:

val zenTone = ZenTone(
    sampleRate = SampleRate.Hz48000,
    channelMask = AudioFormat.CHANNEL_OUT_STEREO
)

If you need to override the PCM encoding, use the advanced factory:

val zenTone = ZenTone.advanced(
    sampleRate = SampleRate.Hz44100,
    encoding = AudioFormat.ENCODING_PCM_8BIT,
    channelMask = AudioFormat.CHANNEL_OUT_MONO
)

encoding defaults to AudioFormat.ENCODING_PCM_16BIT; supported values are AudioFormat.ENCODING_PCM_8BIT and AudioFormat.ENCODING_PCM_16BIT.

Waveform generation honors the configured sample rate, PCM encoding, and channel layout.

Built-in wave generators are instantiated per playback, for example SineWaveGenerator(), SquareWaveGenerator(), TriangleWaveGenerator(), SawtoothWaveGenerator() and PulseWaveGenerator().

Checkout

• 📜 Changelog
• 🤝 Integration docs
• 💡 Usage docs
• 💻 Dev docs

Screenshot of Sample App

Star History

License

Licensed under the Apache License, Version 2.0.

Copyright 2016 Nishant Srivastava

Logo

Credit: Audio icons created by Freepik - Flaticon