Is it possible to set the sampling rate when getting raw audio data using jsPsych.pluginAPI.getAudioBuffer()?

[tuobamao]

My audio files have a sampling rate of 16000 Hz, but when I use the jsPsych.pluginAPI.getAudioBuffer() to get the raw audio data, the data are accessed with a sampling rate of 48000 Hz. I want to get the data at the original 16000 Hz sampling rate. How can I do this?
This is the code I used:

currentAudio = jsPsych.timelineVariable('sound');
                console.log(currentAudio);
                jsPsych.pluginAPI.getAudioBuffer(currentAudio)
                    .then(function (buffer) {
                        speechData = buffer.getChannelData(0);
                        mix_speech(speechData);
                    })
                    .catch(function (err) {
                        console.error(`Failed to load audio file "${currentAudio}". Try checking the file path. We recommend using the preload plugin to load audio files.`)
                        console.error(err)
                    });```