app.py

import gradio as gr

def triggered_by_clear_event(hidden_in):
    print(hidden_in)
    return "Hello"

with gr.Blocks() as demo:
    with gr.Row():
        with gr.Column():
            audio_in = gr.Audio(label="Audio Component • clear event doesn't work", source="microphone", type="filepath")
            image_in = gr.Image(label="Image Component • clear event works", source="upload", type="filepath")
            hidden_in = gr.Textbox(value="HIDDEN TEXT", visible=False)
            submit_btn : gr.Button("Submit")
        result = gr.Textbox(label="Result")

    audio_in.clear(
        fn = triggered_by_clear_event,
        inputs = [hidden_in],
        outputs = [result]
    )

    image_in.clear(
        fn = triggered_by_clear_event,
        inputs = [hidden_in],
        outputs = [result]
    )

demo.queue().launch()