ppl-synth

The sound synthesizer used in PewPew Live.

Heavily based on and compatible with jfxr.

Repo organisation

• src/ contains the code for the library.
• example/ contains a minimal example that generates two pcm files.

Using the library

Step 1: Define a configuration:

SynthesizerConfig config;
config.frequency_ = 200;
config.sustain_ = 0.04;
config.decay_ = 0.14;
config.frequency_jump1_amount_ = 60;
config.wave_generator_type_ = SynthesizerConfig::SAWTOOTH;

The values for the configuration can be found by using jfxr.

There complete list of supported fields can be found in the source code for SynthesizerConfig.

Step 2: Synthetize the sound using said configuration:

auto pcm_data = Synthesize(config);

Building and running the example

example/ contains an example usage of the library.

You build the example with CMake.

To build from the command line:

mkdir out
cd out
cmake ..
make

Executing the binary results in the creation of 2 raw pcm files. Those raw pcm file can be played with ffplay:

ffplay -f s16le -ar 22k -ac 1 out_16bit.pcm