Reply To: Penn Controller Audio Segment Playing

[Jeremy]

Hi,

There is no built-in command in PennController for that, but it’s easily implementable using a Function element:

newTrial(
    newButton("Start").print().wait().remove()
    ,
    newAudio("sample", "https://freetestdata.com/wp-content/uploads/2021/09/Free_Test_Data_100KB_MP3.mp3")
    ,
    newFunction("playSegment", async ()=>{
        const a = getAudio("sample")._element.audio;
        a.pause();
        a.currentTime = 1.25; // start at 1.25s
        a.play();
        await new Promise(r=>(function checkAudio() {
            if (a.currentTime >= 2.30) { // end at 2.30s
                a.pause();
                r();
            }
            else setTimeout(checkAudio);
        })());
    })
    ,
    newButton("Play segment").callback( getFunction("playSegment").call() ).print()
    ,
    newButton().wait()
)

Jeremy