});
connect(ui->compressor_threshold_knob, &QDial::valueChanged,
bind(&MainWindow::compressor_threshold_knob_changed, this, simple_bus_index, _1));
connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this, simple_bus_index](int state){
global_audio_mixer->set_compressor_enabled(simple_bus_index, state == Qt::Checked);
});
connect(ui->compressor_threshold_knob, &QDial::valueChanged,
bind(&MainWindow::compressor_threshold_knob_changed, this, simple_bus_index, _1));
connect(ui->compressor_enabled, &QCheckBox::stateChanged, [this, simple_bus_index](int state){
global_audio_mixer->set_compressor_enabled(simple_bus_index, state == Qt::Checked);