| Soundboard |
| ========== |
| Do you want to just jam with some digital tunes? Now you can! |
| |
| This sample demonstrates how to obtain the lowest latency and optimal computational throughput by: |
| |
| 1) Leaving Oboe to choose the best default stream properties for the current device |
| 2) Setting performance mode to LowLatency |
| 3) Setting sharing mode to Exclusive |
| 4) Setting the buffer size to 2 bursts |
| 5) Using the `-Ofast` compiler optimization flag, even when building the `Debug` variant |
| |
| The [following article explaining how to debug CPU performance problems](https://medium.com/@donturner/debugging-audio-glitches-on-android-ed10782f9c64) may also be useful when looking at this code. |
| |
| Implementation details |
| --- |
| The stream properties are left to Oboe as such the app must output audio data in a format which matches that of the stream. |
| |
| Four different formats are supported: |
| |
| |Channel count|Format| |
| |-------------|------| |
| |1 - Mono|16-bit int| |
| |2 - Stereo|16-bit int| |
| |1 - Mono|Float| |
| |2 - Stereo|Float| |
| |
| The signal chain for mono streams is: |
| |
| SynthSound->Mixer |
| |
| For stereo chains a mono to stereo converter is added to the end of the chain: |
| |
| SynthSound->Mixer->MonoToStereo |
| |
| The compiler optimization flag `-Ofast` can be found in [CMakeLists.txt](CMakeLists.txt). |
| |
| Each SynthSound is a series of 5 Oscillators, creating a pleasant sounding note when combined. |
| |
| The number of notes depends on the shape of the screen, with G3 being the first note. |
| |
| In order to determine whether a note should be played, MusicTileView demonstrates how to keep track of where each finger is. |
| |
| Images |
| ----------- |
|  |
