visualize

Visualize audio levels in audio meter display

Since R2023b

Syntax

visualize(lvlMeter)

uimeter = visualize(lvlMeter)

Description

visualize(lvlMeter) opens an audio meter display using a uiaudiometer component. The meter is updated with the computed audio peak levels as the simulation progresses.

uimeter = visualize(lvlMeter) returns a handle to the audio meter UI component.

Examples

collapse all

Visualize Audio Peak Levels

Open Live Script

Create an audioLevelMeter object and call visualize to open an audio meter display.

lvlMeter = audioLevelMeter;
visualize(lvlMeter)

Create an audio file reader and a device writer to stream audio from a file and play it on your device.

reader = dsp.AudioFileReader("FunkyDrums-44p1-stereo-25secs.mp3");
player = audioDeviceWriter(SampleRate=reader.SampleRate);

In an audio stream loop, read the audio from the file and play it to your device. The audio meter visualization updates at each call.

while ~isDone(reader)
    audioIn = reader();
    lvlMeter(audioIn);
    player(audioIn);
end

Input Arguments

collapse all

`lvlMeter` — Audio level meter object
`audioLevelMeter` object

Audio level meter object to visualize, specified as an audioLevelMeter object.

Output Arguments

collapse all

`uimeter` — Audio meter UI component
UI component handle

Audio meter UI component, returned as a handle to the uiaudiometer component. You can use the handle to change the properties specified in Meter Properties.