Use of setVelocity on the PannerNode and AudioListener, and speedOfSound and dopplerFactor on the AudioListener are deprecated and those members will be removed. For more help https://developer.mozilla.org/en-US/docs/Web/API/AudioListener#Deprecated_features
PannerNode와 AudioListener의 setVelocity, AudioListener의 speedOfSound와 dopplerFactor는 폐지되었고 삭제될 것입니다. 더 자세한 사항은 https://developer.mozilla.org/en-US/docs/Web/API/AudioListener#Deprecated_features 를 참고해 주십시오.