For more information about the examples, such as how the Python and Mojo files interact with each other, see the Examples Overview
FeedbackDelaysGui¶
A GUI for controlling a feedback delay audio graph.
The GUI is made using PySide6 and provides sliders and checkboxes to control various parameters of the feedback delay effect.
Python Code¶
import sys
from pathlib import Path
# This example is able to run by pressing the "play" button in VSCode
# that executes the whole file.
# In order to do this, it needs to add the parent directory to the path
# (the next line here) so that it can find the mmm_src and mmm_utils packages.
# If you want to run it line by line in a REPL, skip this line!
sys.path.insert(0, str(Path(__file__).parent.parent))
from mmm_python.GUI import Handle, ControlSpec
from mmm_python.MMMAudio import MMMAudio
from PySide6.QtWidgets import QApplication, QWidget, QVBoxLayout, QCheckBox
mmm_audio = MMMAudio(128, graph_name="FeedbackDelaysGUI", package_name="examples")
mmm_audio.start_audio()
app = QApplication([])
# Create the main window
window = QWidget()
window.setWindowTitle("Feedback Delay Controller")
window.resize(300, 100)
# stop audio when window is closed
window.closeEvent = lambda event: (mmm_audio.stop_audio(), event.accept())
# Create layout
layout = QVBoxLayout()
gatebutton = QCheckBox("play")
gatebutton.setChecked(True)
gatebutton.stateChanged.connect(lambda state: mmm_audio.send_bool("play", True if state == 2 else False))
layout.addWidget(gatebutton)
gatebutton = QCheckBox("delay-input")
gatebutton.setChecked(True)
gatebutton.stateChanged.connect(lambda state: mmm_audio.send_bool("delay-input", True if state == 2 else False))
layout.addWidget(gatebutton)
# Create a slider
delaytimeslider = Handle("delay time",ControlSpec(0, 1.0, 0.5), 0.5, callback=lambda v: mmm_audio.send_float("delay_time", v))
layout.addWidget(delaytimeslider)
feedbackslider = Handle("feedback",ControlSpec(-130, -0.1, 4), -6, callback=lambda v: mmm_audio.send_float("feedback", v))
layout.addWidget(feedbackslider)
freqslider = Handle("ffreq",ControlSpec(20, 20000, 0.5), 8000, callback=lambda v: mmm_audio.send_float("ffreq", v))
layout.addWidget(freqslider)
qslider = Handle("q",ControlSpec(0.1, 10, 0.5), 1.0, callback=lambda v: mmm_audio.send_float("q", v))
layout.addWidget(qslider)
mixslider = Handle("mix",ControlSpec(0.0, 1.0, 2), 0.2, callback=lambda v: mmm_audio.send_float("mix", v))
layout.addWidget(mixslider)
gatebutton = QCheckBox("main")
gatebutton.setChecked(True)
gatebutton.stateChanged.connect(lambda state: mmm_audio.send_bool("main", True if state == 2 else False))
layout.addWidget(gatebutton)
# Set the layout for the main window
window.setLayout(layout)
# Show the window
window.show()
# Start the application's event loop
app.exec()