Use telephonize
Use cathedral
Description:
Add and delete default sound effects.
Result:
Note the sound Effect difference.
Code:
            function onload() {
                $('#audio').jWebAudio('addSoundSource', {
                    'url': '../../examples/resource/a.ogg',
                    'multishot': true,
                    'preLoad': true,
                    'callback': function() {
                        $('#audio').jWebAudio('play');
                    }
                });
            }
            
            var teleId = null;
            function teleClick() {
                if ($('#teleInput')[0].checked) {
                    teleId = $('#audio').jWebAudio('addEffect', 'telephonize');
                    $('#clearBtn')[0].enabled = true;
                } else if (teleId !== null) {
                    $('#audio').jWebAudio('deleteEffect', teleId);
                }
            }
            
            var cathId = null;
            function cathClick() {
                if ($('#cathInput')[0].checked) {
                    cathId = $('#audio').jWebAudio('addEffect', 'cathedral');
                    $('#clearBtn')[0].enabled = true;
                } else if (cathId !== null) {
                    $('#audio').jWebAudio('deleteEffect', cathId);
                }
            }
            
            function clearAll() {
                $('#audio').jWebAudio('clearAllEffects');
                $('#cathInput')[0].checked = false;
                $('#teleInput')[0].checked = false;
                $('#clearBtn')[0].enabled = false;
            }