On considère deux sons, associés aux représentations graphiques ci-dessous.
Représentation du son n°1 :
{"graphInit": {"range": [[-12, 12], [-12.0, 12.0]], "scale": [25, 15], "axisArrows": "->", "axisOpacity": 0.5, "gridOpacity": 0.2, "gridStep": [1, 1], "tickStep": [1, 1], "labelStep": [1, 5], "unityLabels": true, "xLabel": "Temps (ms)", "yLabel": "Tension (mV)", "xLabelPos": [13, 2], "yLabelPos": [2, 13.0]}, "plot": [["function(x){ return 4.5*Math.sin(0.897597901025655*x + 1.88495559215388) + 3.5*Math.sin(1.79519580205131*x + 1.88495559215388) + 3.0*Math.sin(2.69279370307697*x + 1.88495559215388);}", [-14, 14], {"stroke": "#FF6600"}]]}
Représentation du son n°2 :
{"graphInit": {"range": [[-12, 12], [-12.0, 12.0]], "scale": [25, 15], "axisArrows": "->", "axisOpacity": 0.5, "gridOpacity": 0.2, "gridStep": [1, 1], "tickStep": [1, 1], "labelStep": [1, 5], "unityLabels": true, "xLabel": "Temps (ms)", "yLabel": "Tension (mV)", "xLabelPos": [13, 2], "yLabelPos": [2, 13.0]}, "plot": [["function(x){ return -4.5*Math.sin(0.897597901025655*x + 5.4753471962565) - 3.5*Math.sin(1.79519580205131*x + 9.06573880035912) - 3.0*Math.sin(2.69279370307697*x + 12.6561304044617);}", [-14, 14], {"stroke": "#6D40BA"}]]}
Dire si les affirmations suivantes sont vraies ou fausses :
"Ces deux sons ont la même amplitude."