[PyQt] Is there any VU Meter widgets?

[zw g]

Hi List,


Is there any VU Meter widgets out there for
displaying the volume level of audio signal(output/input) in real time?

If not, can someone give me a clue how to write one? Step 1, 2, 3...
And maybe how to interact with sound card?
Get the audio signal value in almost realtime and display it? I don't know.

Please advice.
Thanks in advance.

Gui
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