diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a52eba23..83603bfc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Format based on [Keep a Changelog](https://keepachangelog.com/).
 ## [Unreleased]
 
 ### Changed
+- UI audio assets revised — monologue chimes re-generated (0.8s, insert-tech aesthetic), fog_recognition re-generated (was silent), all 8 assets normalized to 44.1kHz stereo LUFS -16 (#453)
 - review-pr skill: explicit verdict rules — critical/warning → REQUEST_CHANGES, suggestion-only → APPROVE
 
 ### Added
diff --git a/client/assets/audio/cursor_hover.ogg b/client/assets/audio/cursor_hover.ogg
index 21ede3d82..83563915e 100644
Binary files a/client/assets/audio/cursor_hover.ogg and b/client/assets/audio/cursor_hover.ogg differ
diff --git a/client/assets/audio/fog_recognition.ogg b/client/assets/audio/fog_recognition.ogg
index b63b891bd..3760686e4 100644
Binary files a/client/assets/audio/fog_recognition.ogg and b/client/assets/audio/fog_recognition.ogg differ
diff --git a/client/assets/audio/implant_open.ogg b/client/assets/audio/implant_open.ogg
index 01ff318f9..baaf56214 100644
Binary files a/client/assets/audio/implant_open.ogg and b/client/assets/audio/implant_open.ogg differ
diff --git a/client/assets/audio/sfx_monologue_chime.ogg b/client/assets/audio/sfx_monologue_chime.ogg
index b46bfdb7c..a638d4621 100644
Binary files a/client/assets/audio/sfx_monologue_chime.ogg and b/client/assets/audio/sfx_monologue_chime.ogg differ
diff --git a/client/assets/audio/sfx_monologue_chime_urgent.ogg b/client/assets/audio/sfx_monologue_chime_urgent.ogg
index 3def96dab..026e780de 100644
Binary files a/client/assets/audio/sfx_monologue_chime_urgent.ogg and b/client/assets/audio/sfx_monologue_chime_urgent.ogg differ
diff --git a/client/assets/audio/sfx_stance_change.ogg b/client/assets/audio/sfx_stance_change.ogg
index 214d84a54..c93dfbe2a 100644
Binary files a/client/assets/audio/sfx_stance_change.ogg and b/client/assets/audio/sfx_stance_change.ogg differ
diff --git a/client/assets/audio/sfx_weapon_aim_lock.ogg b/client/assets/audio/sfx_weapon_aim_lock.ogg
index f4cac5ddd..f1c6813bf 100644
Binary files a/client/assets/audio/sfx_weapon_aim_lock.ogg and b/client/assets/audio/sfx_weapon_aim_lock.ogg differ
diff --git a/client/assets/audio/weapon_aim.ogg b/client/assets/audio/weapon_aim.ogg
index 104becc8e..5e23b3c6e 100644
Binary files a/client/assets/audio/weapon_aim.ogg and b/client/assets/audio/weapon_aim.ogg differ
diff --git a/docs/assets/audio/ui.md b/docs/assets/audio/ui.md
index 0b883f2df..b222173cf 100644
--- a/docs/assets/audio/ui.md
+++ b/docs/assets/audio/ui.md
@@ -5,20 +5,20 @@ Interface sounds triggered by player interaction, insert systems, and cognitive
 ## Generation Approach
 
 - **All UI sounds:** Generated via Stable Audio Open with sonic family prefix prompts, then trimmed/normalized/converted via `audio-post pipeline`.
-- **Monologue chimes:** Currently PLACEHOLDER (Sprint 7). Redo scheduled next audio sprint (#453). Design brief below captures target register.
+- **Monologue chimes:** Re-generated in Sprint 9 (#453). Insert-tech prefix + Chimes template, 5s SAO generation trimmed to 0.8s.
 
 ## Assets
 
 | ID | Filename | Status | Bus | Method | Duration | Prompt/Notes | Sprint |
 |----|----------|--------|-----|--------|----------|-------------|--------|
-| UI-001 | `cursor_hover.ogg` | draft | UI Sounds | SAO | 50-100ms | Subtle tick/ping on entity hover (D-056). Insert-tech: clean, precise, synthetic. Almost subliminal — notice if missing, not if present. Needs trim to target duration (#453). | S7 #440 |
-| UI-002 | `implant_open.ogg` | draft | UI Sounds | SAO | 150-250ms | Rising tone when insert UI opens (radial menu, inventory, stance). Neural lattice powering up. Frequency sweep, harmonic shimmer. Needs trim (#453). | S7 #440 |
-| UI-003 | `fog_recognition.ogg` | draft | UI Sounds | SAO | 300-400ms | Warm organic chime at onset of cognitive delay (D-060). Character recognizing a person. Unresolved tone. Needs trim (#453). | S7 #440 |
-| UI-004 | `weapon_aim.ogg` | draft | UI Sounds | SAO | 100-150ms | Harder click/lock for weapon aim state. Mechanical, deliberate. SKETCH ONLY — no weapons in Sprint 7. Needs trim (#453). | S7 #440 |
-| UI-005 | `sfx_monologue_chime.ogg` | draft | UI Sounds | SAO | 500-1000ms | PLACEHOLDER. Soft crystalline tone, neural lattice surfacing a thought. Quiet, non-intrusive. Redo in next audio sprint (#453). See design brief below. | S7 #440 |
-| UI-006 | `sfx_monologue_chime_urgent.ogg` | draft | UI Sounds | SAO | 500-1000ms | PLACEHOLDER. Sharper variant for contradiction/anomaly. Brighter, more insistent. Redo in next audio sprint (#453). See design brief below. | S7 #440 |
-| UI-007 | `sfx_weapon_aim_lock.ogg` | draft | UI Sounds | SAO | 300-500ms | Sharp targeting lock-on confirmation for weapon aim. Clinical/dangerous, harder than general entity lock. Descending digital sweep with metallic precision click. | S8 #440 |
-| UI-008 | `sfx_stance_change.ogg` | draft | UI Sounds | SAO | 200-400ms | Soft mechanical mode-switch click for stance toggle (Walk/Sprint/Careful/Crouch). Subtle digital detent, nearly subliminal. Fires frequently — fatigue-safe. | S8 #440 |
+| UI-001 | `cursor_hover.ogg` | done | UI Sounds | SAO | 77ms | Subtle tick/ping on entity hover (D-056). Insert-tech: clean, precise, synthetic. Trimmed + normalized to 44.1kHz in S9 #453. | S7 #440, S9 #453 |
+| UI-002 | `implant_open.ogg` | done | UI Sounds | SAO | 217ms | Rising tone when insert UI opens (radial menu, inventory, stance). Neural lattice powering up. Trimmed + normalized in S9 #453. | S7 #440, S9 #453 |
+| UI-003 | `fog_recognition.ogg` | done | UI Sounds | SAO | 400ms | Warm organic chime at onset of cognitive delay (D-060). Re-generated in S9 — original was silent. Organic prefix + Chimes template. | S7 #440, S9 #453 |
+| UI-004 | `weapon_aim.ogg` | done | UI Sounds | SAO | 127ms | Harder click/lock for weapon aim state. Mechanical, deliberate. Trimmed + normalized in S9 #453. | S7 #440, S9 #453 |
+| UI-005 | `sfx_monologue_chime.ogg` | done | UI Sounds | SAO | 800ms | Re-generated in S9. Insert-tech prefix + Chimes template. Crystalline tone, neural lattice surfacing a thought. See design brief below. | S7 #440, S9 #453 |
+| UI-006 | `sfx_monologue_chime_urgent.ogg` | done | UI Sounds | SAO | 800ms | Re-generated in S9. Insert-tech prefix + Chimes template (sharper/brighter variant). CFG 8. See design brief below. | S7 #440, S9 #453 |
+| UI-007 | `sfx_weapon_aim_lock.ogg` | done | UI Sounds | SAO | 505ms | Sharp targeting lock-on confirmation for weapon aim. Downsampled to 44.1kHz + normalized in S9 #453. | S8 #440, S9 #453 |
+| UI-008 | `sfx_stance_change.ogg` | done | UI Sounds | SAO | 349ms | Soft mechanical mode-switch click for stance toggle. Downsampled to 44.1kHz + normalized in S9 #453. | S8 #440, S9 #453 |
 
 ## Mix Specs (not audio files)
 
@@ -65,9 +65,9 @@ These are AudioBus parameter changes, documented in `docs/audio/dialogue-ambient
 - **Integration:** stance_indicator.gd stance_changed signal → AudioManager.play_ui("sfx_stance_change")
 - **Cross-reference:** D-048 (neural insert feedback aesthetic), D-053 (movement stances)
 
-### UI-005 / UI-006: Monologue Chime Design Brief (PLACEHOLDER)
+### UI-005 / UI-006: Monologue Chime Design Brief
 
-**Target emotional register for Sprint 8 redo:**
+**Target emotional register (achieved Sprint 9 #453):**
 
 The monologue chimes are the two poles of augmented cognition made audible:
 
@@ -84,9 +84,9 @@ The monologue chimes are the two poles of augmented cognition made audible:
 
 **Quality bar:** If the urgent chime feels like a quest marker ping, it has failed. If it feels like Ubisoft, it has failed. The delta between normal and urgent = "someone thinking quietly" vs "someone's eyes going slightly wide."
 
-**Placeholder spec (Sprint 7):**
-- Normal: pure sine 1.2kHz, 600ms, gentle attack, natural decay. Conservative volume.
-- Urgent: sine 1.2kHz + harmonic 2.4kHz, 400ms, sharper attack, 15% louder.
-- Deliberately undersized — obviously temporary. Ugly placeholders get replaced.
+**Sprint 9 generation spec:**
+- Normal: SAO 5s generation (insert-tech prefix + chimes template), CFG 7, 100 steps. Trimmed to 0.8s (attack + initial decay). LUFS normalized to -16.
+- Urgent: SAO 5s generation (insert-tech prefix + chimes template, sharper/brighter descriptors), CFG 8, 100 steps. Trimmed to 0.8s. Stronger attack (-6.3dB peak vs -15.3dB normal), more sustained energy.
+- Both at 44.1kHz stereo, Vorbis q6 encoding.
 
-**Evaluation gate:** First internal playtest after Sprint 7: "Does the normal chime feel like a thought arriving? Does the urgent chime create a physiological response?" If no → trigger chime redesign.
+**Evaluation gate:** First internal playtest: "Does the normal chime feel like a thought arriving? Does the urgent chime create a physiological response?" If no → iterate with manual synthesis.