diff --git a/sound_algo/data_only/scene_pose_action.scd b/sound_algo/data_only/scene_pose_action.scd
new file mode 100644
index 0000000..096c119
--- /dev/null
+++ b/sound_algo/data_only/scene_pose_action.scd
@@ -0,0 +1,131 @@
+// =====================================================================
+//  scene_pose_action.scd -- pilote les FX live a partir de l'action_head.
+//
+//  Necessite : data_feeds.scd deja charge (handlers OSCdef \poseAction,
+//  \poseKin, \poseEnter, \poseLeave). Les dicts ~poseState et ~poseKin
+//  doivent etre populates en temps reel par data_only_viz.action_head_pub.
+//
+//  Mapping :
+//    speed (m/s mean joint)       -> drive amount    0..1
+//    accel (m/s2)                 -> filter cutoff   200 Hz..6 kHz
+//    symmetry (-1..1)             -> stereo width    0..1
+//    label argmax (0=debout, 1=assise, 2=danse) :
+//      - debout  -> reverb mid, kick on, melody pad
+//      - assise  -> pad ambient, kick off, lo-fi
+//      - danse   -> drive max, kick punchy, acid lead
+//
+//  Usage live (a evaluer bloc par bloc dans le SC IDE) :
+//      [0] SETUP : declare le helper ~mapPoseToFx + lance la Routine.
+//      [1] START : ~scenePoseAction.start
+//      [2] STOP  : ~scenePoseAction.stop
+//      [3] TWEAK : ajuster les seuils dans ~paConfig
+// =====================================================================
+
+// [0] SETUP -----------------------------------------------------------
+(
+~paConfig = (
+	speedMin:      0.0,    speedMax:    0.8,
+	accelMin:      0.0,    accelMax:    3.0,
+	cutoffMin:     200,    cutoffMax:   6000,
+	rate:          10,     // refresh Hz
+);
+
+~mapPoseToFx = {
+	var avgSpeed = 0, avgAccel = 0, avgSym = 0, avgProbs = [0, 0, 0];
+	var n = max(1, ~poseKin.size);
+	var labelIdx;
+
+	~poseKin.values.do { |kin|
+		avgSpeed = avgSpeed + (kin[\speed] ? 0);
+		avgAccel = avgAccel + (kin[\accel] ? 0);
+		avgSym   = avgSym   + (kin[\symmetry] ? 0);
+	};
+	avgSpeed = avgSpeed / n;
+	avgAccel = avgAccel / n;
+	avgSym   = avgSym   / n;
+
+	~poseState.values.do { |ps|
+		var p = ps[\probs] ? [0, 0, 0];
+		avgProbs = avgProbs.collect { |v, i| v + (p[i] ? 0) };
+	};
+	avgProbs = avgProbs.collect { _ / n };
+	labelIdx = avgProbs.maxIndex ? 0;
+
+	// Drive + filter + width
+	if (~fxDrive.notNil) {
+		~fxDrive.(avgSpeed.linlin(~paConfig[\speedMin], ~paConfig[\speedMax], 0, 1));
+	};
+	if (~fxCut.notNil) {
+		~fxCut.(avgAccel.linexp(~paConfig[\accelMin], ~paConfig[\accelMax],
+								~paConfig[\cutoffMin], ~paConfig[\cutoffMax]));
+	};
+	if (~fxSt.notNil) { ~fxSt.(avgSym.linlin(-1, 1, 0, 1)) };
+
+	// Label-driven track switch (smooth crossfade between presets)
+	switch (labelIdx,
+		0, {
+			if (~fxComp.notNil) { ~fxComp.(0.7) };
+			if (~fxRev.notNil)  { ~fxRev.(0.4) };
+		},
+		1, {
+			if (~fxComp.notNil) { ~fxComp.(0.3) };
+			if (~fxRev.notNil)  { ~fxRev.(0.6) };
+		},
+		2, {
+			if (~fxComp.notNil) { ~fxComp.(0.9) };
+			if (~fxRev.notNil)  { ~fxRev.(0.2) };
+			if (~fxDrive.notNil){ ~fxDrive.(avgSpeed.linlin(0, 0.6, 0.3, 1.0)) };
+		}
+	);
+
+	[labelIdx, avgSpeed.round(0.01), avgAccel.round(0.01),
+	 avgSym.round(0.01)];
+};
+
+~scenePoseAction = ~scenePoseAction ?? {
+	(
+		running: false,
+		routine: nil,
+		start: {
+			if (~scenePoseAction[\running]) {
+				"[scene_pose_action] already running".postln;
+			} {
+				~scenePoseAction[\running] = true;
+				~scenePoseAction[\routine] = Routine({
+					inf.do {
+						var snapshot = ~mapPoseToFx.();
+						if (~scenePoseAction[\verbose] ? false) {
+							("[pose] label=" ++ snapshot[0]
+							 ++ " s=" ++ snapshot[1]
+							 ++ " a=" ++ snapshot[2]
+							 ++ " sym=" ++ snapshot[3]).postln;
+						};
+						(1 / ~paConfig[\rate]).wait;
+					};
+				}).play;
+				"[scene_pose_action] STARTED".postln;
+			};
+		},
+		stop: {
+			~scenePoseAction[\routine] !? { |r| r.stop };
+			~scenePoseAction[\routine] = nil;
+			~scenePoseAction[\running] = false;
+			"[scene_pose_action] STOPPED".postln;
+		},
+		verbose: false,
+	)
+};
+
+"[OK] SETUP scene_pose_action".postln;
+)
+
+// [1] START -----------------------------------------------------------
+// ~scenePoseAction[\verbose] = true;   // optionnel : log chaque tick
+// ~scenePoseAction[\start].();
+
+// [2] STOP ------------------------------------------------------------
+// ~scenePoseAction[\stop].();
+
+// [3] TWEAK ------------------------------------------------------------
+// ~paConfig[\speedMax] = 1.2;
+// ~paConfig[\rate]     = 20;