diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 645b49e..805909c 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -33,7 +33,7 @@ jobs:
         id: pins
         run: |
           echo "mp=$(cat cmods/MICROPYTHON_PYDEVICES_COMMIT)" >> "$GITHUB_OUTPUT"
-          echo "audioif=$(cat cmods/AUDIOIF_PATCHES_COMMIT)" >> "$GITHUB_OUTPUT"
+          echo "audiodsp=$(cat cmods/AUDIODSP_PATCHES_COMMIT)" >> "$GITHUB_OUTPUT"
 
       - name: Check out micropython-pydevices at the pinned commit
         uses: actions/checkout@v4
@@ -43,15 +43,15 @@ jobs:
           path: micropython-pydevices
           fetch-depth: 1
 
-      - name: Check out audioif at the pinned commit
+      - name: Check out audiodsp at the pinned commit
         uses: actions/checkout@v4
         with:
-          repository: PyDevices/audioif
-          ref: ${{ steps.pins.outputs.audioif }}
-          path: audioif
+          repository: PyDevices/audiodsp
+          ref: ${{ steps.pins.outputs.audiodsp }}
+          path: audiodsp
           fetch-depth: 1
 
-      # cmods, micropython-pydevices, and audioif land as siblings under
+      # cmods, micropython-pydevices, and audiodsp land as siblings under
       # $GITHUB_WORKSPACE, matching the workspace layout sync_from_overlay.sh
       # expects for its sibling-checkout lookup.
       - name: Diff mirrors against pinned sources
diff --git a/.gitignore b/.gitignore
index 84fdc24..44e4c44 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,7 +51,8 @@ user_post_mpconfigport.mk
 /esp32_partitions/*.csv
 
 # Top-level symlinks to clones/siblings (/* / does not match symlinks)
-/audioif
+/audiodsp
+/audiopump
 /cameraif
 /displayif
 /earful
diff --git a/AGENTS.md b/AGENTS.md
index d3079c9..560ca65 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -58,9 +58,9 @@ the organization portal, simulator, and documentation sites.
 | `mp-wasm` | `./build_mp.sh --port webassembly --variant pydevices` | `bin/micropython.{mjs,wasm}` | `../pydevices/bin/micropython.{mjs,wasm}` and `../PyDevices.github.io/vendor/micropython/micropython.{mjs,wasm}` |
 | `cp-unix` | `./build_cp.sh --port unix --variant coverage` | `bin/circuitpython` | `../pydevices/bin/circuitpython` |
 
-**audioif's parity oracle is `bin/circuitpython-oracle-<cp-version>`, built
+**audiodsp's parity oracle is `bin/circuitpython-oracle-<cp-version>`, built
 only by the opt-in `--only cp-oracle` target** (the same unix coverage build at
-`CIRCUITPY_SYNTHIO_MAX_CHANNELS=64`) and re-pinned by sha256 in audioif's
+`CIRCUITPY_SYNTHIO_MAX_CHANNELS=64`) and re-pinned by sha256 in audiodsp's
 `tests/test_voice_ceiling_consistency.py` in the same change that builds it —
 `bin/circuitpython` is `cp-unix`'s, at the variant's own 14-voice ceiling, and
 a bare run of this script overwrites it.
diff --git a/AUDIODSP_PATCHES_COMMIT b/AUDIODSP_PATCHES_COMMIT
new file mode 100644
index 0000000..f8f6c74
--- /dev/null
+++ b/AUDIODSP_PATCHES_COMMIT
@@ -0,0 +1 @@
+4e5809195af58dd17f1705edcb9981e6fec3a312
diff --git a/AUDIOIF_PATCHES_COMMIT b/AUDIOIF_PATCHES_COMMIT
deleted file mode 100644
index 2f17617..0000000
--- a/AUDIOIF_PATCHES_COMMIT
+++ /dev/null
@@ -1 +0,0 @@
-667cb0f30debc3d11baff7872f652e7b95c4a7c9
diff --git a/build_cp.sh b/build_cp.sh
index d297129..20cc019 100755
--- a/build_cp.sh
+++ b/build_cp.sh
@@ -392,7 +392,7 @@ user_config=$(cp_user_config_make_opts)
 #
 # compiles and yields 64.
 #
-# Why it exists: docs/correctness-standard.md in audioif holds a node
+# Why it exists: docs/correctness-standard.md in audiodsp holds a node
 # CircuitPython also has to CircuitPython's own bytes *at the same compile-time
 # configuration*, so a comparison build has to be able to take the ceiling this
 # workspace ships.
diff --git a/build_interpreters.sh b/build_interpreters.sh
index 2e980de..2a0c0f7 100755
--- a/build_interpreters.sh
+++ b/build_interpreters.sh
@@ -16,9 +16,9 @@
 #   cp-oracle   CircuitPython unix / coverage built at
 #               CIRCUITPY_SYNTHIO_MAX_CHANNELS=64
 #               → bin/circuitpython-oracle-<cp-version>, and nowhere else.
-#               That file is audioif's parity oracle: every golden in that
+#               That file is audiodsp's parity oracle: every golden in that
 #               repository means "the bytes this binary rendered". Its sha256
-#               is pinned in audioif's tests/test_voice_ceiling_consistency.py,
+#               is pinned in audiodsp's tests/test_voice_ceiling_consistency.py,
 #               so re-pinning the hash there is part of running this target,
 #               in the same change. bin/circuitpython is NOT the oracle — it
 #               is cp-unix's, at the coverage variant's own 14-voice ceiling,
@@ -289,12 +289,12 @@ install_one() {
                 exit 1
             }
             # Workspace bin only, never the sibling pydevices tree: this is a
-            # test fixture for audioif's parity gates, not an interpreter
-            # anybody runs. Re-pin its sha256 in audioif's
+            # test fixture for audiodsp's parity gates, not an interpreter
+            # anybody runs. Re-pin its sha256 in audiodsp's
             # tests/test_voice_ceiling_consistency.py in the same change.
             install_file "$CP_UNIX_SRC" "$WORKSPACE_BIN" \
                          "circuitpython-oracle-$(cp_version)"
-            echo "Pin this in audioif tests/test_voice_ceiling_consistency.py:"
+            echo "Pin this in audiodsp tests/test_voice_ceiling_consistency.py:"
             sha256sum "$WORKSPACE_BIN/circuitpython-oracle-$(cp_version)"
             ;;
     esac
diff --git a/patches/README.md b/patches/README.md
index 401b8db..0acec1e 100644
--- a/patches/README.md
+++ b/patches/README.md
@@ -55,7 +55,7 @@ sync here — never the reverse** (single-writer, same rule as lvgl):
   with provenance; `apply_patches.sh` there applies them standalone).
 - `0012` and `0014` are cmods-local board integration (the P4 and S3 board
   headers, respectively) and have no upstream home; they are authored here.
-- `adafruit_mp3/` → `PyDevices/audioif` (`patches/adafruit_mp3/`,
+- `adafruit_mp3/` → `PyDevices/audiodsp` (`patches/adafruit_mp3/`,
   applied by its `scripts/fetch_deps.sh`).
 
 ## Regenerate
diff --git a/patches/adafruit_mp3/0001-windows-msvc-inline-assembly.patch b/patches/adafruit_mp3/0001-windows-msvc-inline-assembly.patch
index dffc2c8..1f249f2 100644
--- a/patches/adafruit_mp3/0001-windows-msvc-inline-assembly.patch
+++ b/patches/adafruit_mp3/0001-windows-msvc-inline-assembly.patch
@@ -1,3 +1,30 @@
+From: PyDevices audiodsp
+Date: Mon, 25 Aug 2026 00:00:00 +0000
+Subject: [PATCH] src/assembly.h: keep mingw-w64 GCC off the MSVC-only branch
+
+Purpose: assembly.h guards its MSVC-only inline-`__asm{}` branch (and an
+MSVC-only `#pragma warning`) on `defined _WIN32`, which mingw-w64 GCC --
+this workspace's Windows MicroPython target -- also defines. Excluding
+`__GNUC__` makes mingw fall through to the portable C fallback at the
+bottom of the file, the same one the unix build already uses. Upstream
+never hits this: CircuitPython has no Windows port, so the branch was
+only ever reached by real MSVC.
+
+Provenance: written for the audiodsp Windows MicroPython port (originally
+carried in the parent workspace's own patches/adafruit_mp3; ownership
+moved here in Phase 2 of the modernization program). Full rationale:
+docs/upstream-diff.md in
+the audiodsp repository, "Tier 5 audiomp3: three Windows-only local
+fixes, no unix impact".
+Upstream-version: authored against Adafruit_MP3
+aac02afd9f24d2ee930f650156654ab9211a306a, the exact commit
+CircuitPython 10.2.1 vendors (see DEPENDENCIES.lock).
+Order: first and only patch in the series. Applied by
+scripts/fetch_deps.sh on top of the pinned commit.
+Test: build the Windows MicroPython port (mingw-w64) with the audiodsp
+usermod; the unix build is unaffected because it never entered this
+branch.
+
 diff --git a/src/assembly.h b/src/assembly.h
 index 7c714cd..f5ca2e2 100644
 --- a/src/assembly.h
@@ -7,8 +34,8 @@ index 7c714cd..f5ca2e2 100644
  #endif
  
 -#if (defined _WIN32 && !defined _WIN32_WCE) || (defined __WINS__ && defined _SYMBIAN) || defined(_OPENWAVE_SIMULATOR) || defined(WINCE_EMULATOR)    /* Symbian emulator for Ix86 */
-+/* PyDevices local patch (see cmods/micropython-audio/docs/upstream-diff.md,
-+ * "cmods/mp3 local patch"): added `&& !defined(__GNUC__)` to this branch's
++/* PyDevices local patch (see docs/upstream-diff.md in the audiodsp repo,
++ * "Tier 5 audiomp3"): added `&& !defined(__GNUC__)` to this branch's
 + * condition. It guards MSVC-only `__asm { ... }` intrinsic syntax and an
 + * MSVC-only `#pragma warning`, neither of which mingw-w64 GCC accepts, but
 + * mingw-w64 GCC (this workspace's Windows MicroPython target) also defines
diff --git a/patches/adafruit_mp3/README.md b/patches/adafruit_mp3/README.md
index 7f5dd82..8b94ce5 100644
--- a/patches/adafruit_mp3/README.md
+++ b/patches/adafruit_mp3/README.md
@@ -1,7 +1,7 @@
 # Adafruit_MP3 patch queue
 
-Owned by audioif (Phase 2 of the modernization program moved ownership
-here from cmods/patches/adafruit_mp3). Applied by
+Owned by audiodsp (Phase 2 of the modernization program moved ownership
+here from the parent workspace's own patches/adafruit_mp3). Applied by
 `scripts/fetch_deps.sh` on top of the pinned Adafruit_MP3 commit
 declared in `DEPENDENCIES.lock`.
 
diff --git a/scripts/sync_from_overlay.sh b/scripts/sync_from_overlay.sh
index fc5d5ca..4be1778 100755
--- a/scripts/sync_from_overlay.sh
+++ b/scripts/sync_from_overlay.sh
@@ -5,7 +5,7 @@
 #   PyDevices/micropython-pydevices  ->  patches/000*.patch
 #                                         wasmbridge/
 #                                         variants/webassembly/pydevices/
-#   PyDevices/audioif                ->  patches/adafruit_mp3/
+#   PyDevices/audiodsp                ->  patches/adafruit_mp3/
 #
 # Edit those files in the source repo, never here (single-writer, same rule
 # as lvgl-python/scripts/sync_from_lvgl_bindings.sh).
@@ -13,11 +13,11 @@
 # Usage:
 #   ./scripts/sync_from_overlay.sh                 # sync using pinned refs
 #   ./scripts/sync_from_overlay.sh --mp-ref <ref>   # sync micropython-pydevices at <ref>
-#   ./scripts/sync_from_overlay.sh --audioif-ref <ref>
+#   ./scripts/sync_from_overlay.sh --audiodsp-ref <ref>
 #   ./scripts/sync_from_overlay.sh --check          # diff mirrors against pinned refs; exit nonzero on drift
 #
 # <ref> is an exact 40-character commit SHA or a tag. If a sibling checkout
-# (../micropython-pydevices, ../audioif) exists next to this workspace, it is
+# (../micropython-pydevices, ../audiodsp) exists next to this workspace, it is
 # used directly (after fetching the ref if not already present locally);
 # otherwise a shallow temp clone is made from GitHub.
 #
@@ -26,21 +26,21 @@
 set -euo pipefail
 
 MP_REPO_URL="${MICROPYTHON_PYDEVICES_REPO:-https://github.com/PyDevices/micropython-pydevices.git}"
-AUDIOIF_REPO_URL="${AUDIOIF_REPO:-https://github.com/PyDevices/audioif.git}"
+AUDIODSP_REPO_URL="${AUDIODSP_REPO:-https://github.com/PyDevices/audiodsp.git}"
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 CMODS_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
 WORKSPACE_DIR="$(cd "$CMODS_DIR/.." && pwd)"
 
 MP_SIBLING="$WORKSPACE_DIR/micropython-pydevices"
-AUDIOIF_SIBLING="$WORKSPACE_DIR/audioif"
+AUDIODSP_SIBLING="$WORKSPACE_DIR/audiodsp"
 
 MP_PIN_FILE="$CMODS_DIR/MICROPYTHON_PYDEVICES_COMMIT"
-AUDIOIF_PIN_FILE="$CMODS_DIR/AUDIOIF_PATCHES_COMMIT"
+AUDIODSP_PIN_FILE="$CMODS_DIR/AUDIODSP_PATCHES_COMMIT"
 
 CHECK=0
 MP_REF=""
-AUDIOIF_REF=""
+AUDIODSP_REF=""
 
 usage() {
     sed -n '2,24p' "$0" | sed 's/^# \?//'
@@ -52,8 +52,8 @@ while [[ $# -gt 0 ]]; do
             MP_REF=$2
             shift 2
             ;;
-        --audioif-ref)
-            AUDIOIF_REF=$2
+        --audiodsp-ref)
+            AUDIODSP_REF=$2
             shift 2
             ;;
         --check)
@@ -186,57 +186,57 @@ else
 fi
 
 # ---------------------------------------------------------------------------
-# audioif -> patches/adafruit_mp3/
+# audiodsp -> patches/adafruit_mp3/
 # ---------------------------------------------------------------------------
 if [[ "$CHECK" -eq 1 ]]; then
-    [[ -f "$AUDIOIF_PIN_FILE" ]] || {
-        echo "Error: $AUDIOIF_PIN_FILE missing; run without --check first to establish pins." >&2
+    [[ -f "$AUDIODSP_PIN_FILE" ]] || {
+        echo "Error: $AUDIODSP_PIN_FILE missing; run without --check first to establish pins." >&2
         exit 1
     }
-    AUDIOIF_REF=$(tr -d '[:space:]' < "$AUDIOIF_PIN_FILE")
-elif [[ -z "$AUDIOIF_REF" ]]; then
-    if [[ -f "$AUDIOIF_PIN_FILE" ]]; then
-        AUDIOIF_REF=$(tr -d '[:space:]' < "$AUDIOIF_PIN_FILE")
-    elif [[ -d "$AUDIOIF_SIBLING/.git" ]]; then
-        AUDIOIF_REF=$(git -C "$AUDIOIF_SIBLING" rev-parse HEAD)
+    AUDIODSP_REF=$(tr -d '[:space:]' < "$AUDIODSP_PIN_FILE")
+elif [[ -z "$AUDIODSP_REF" ]]; then
+    if [[ -f "$AUDIODSP_PIN_FILE" ]]; then
+        AUDIODSP_REF=$(tr -d '[:space:]' < "$AUDIODSP_PIN_FILE")
+    elif [[ -d "$AUDIODSP_SIBLING/.git" ]]; then
+        AUDIODSP_REF=$(git -C "$AUDIODSP_SIBLING" rev-parse HEAD)
     else
-        echo "Error: no AUDIOIF_PATCHES_COMMIT pin, no --audioif-ref, and no sibling checkout to default from." >&2
+        echo "Error: no AUDIODSP_PATCHES_COMMIT pin, no --audiodsp-ref, and no sibling checkout to default from." >&2
         exit 1
     fi
 fi
 
-AUDIOIF_TMP=$(mktemp -d)
-CLONE_DIRS+=("$AUDIOIF_TMP")
-AUDIOIF_RESOLVED=$(resolve_and_export "$AUDIOIF_REPO_URL" "$AUDIOIF_REF" "$AUDIOIF_SIBLING" "$AUDIOIF_TMP")
+AUDIODSP_TMP=$(mktemp -d)
+CLONE_DIRS+=("$AUDIODSP_TMP")
+AUDIODSP_RESOLVED=$(resolve_and_export "$AUDIODSP_REPO_URL" "$AUDIODSP_REF" "$AUDIODSP_SIBLING" "$AUDIODSP_TMP")
 
-if [[ ! -d "$AUDIOIF_TMP/patches/adafruit_mp3" ]]; then
-    echo "Error: patches/adafruit_mp3/ not found in audioif @ ${AUDIOIF_RESOLVED}." >&2
+if [[ ! -d "$AUDIODSP_TMP/patches/adafruit_mp3" ]]; then
+    echo "Error: patches/adafruit_mp3/ not found in audiodsp @ ${AUDIODSP_RESOLVED}." >&2
     exit 1
 fi
 
 if [[ "$CHECK" -eq 1 ]]; then
-    diff_tree "$AUDIOIF_TMP/patches/adafruit_mp3" "$CMODS_DIR/patches/adafruit_mp3" "patches/adafruit_mp3/ vs audioif@${AUDIOIF_RESOLVED}" || DRIFT=1
+    diff_tree "$AUDIODSP_TMP/patches/adafruit_mp3" "$CMODS_DIR/patches/adafruit_mp3" "patches/adafruit_mp3/ vs audiodsp@${AUDIODSP_RESOLVED}" || DRIFT=1
 else
     rm -rf "$CMODS_DIR/patches/adafruit_mp3"
     mkdir -p "$CMODS_DIR/patches/adafruit_mp3"
-    cp -a "$AUDIOIF_TMP/patches/adafruit_mp3/." "$CMODS_DIR/patches/adafruit_mp3/"
-    printf '%s\n' "$AUDIOIF_RESOLVED" > "$AUDIOIF_PIN_FILE"
-    echo "Synced patches/adafruit_mp3/ from audioif@${AUDIOIF_RESOLVED}"
+    cp -a "$AUDIODSP_TMP/patches/adafruit_mp3/." "$CMODS_DIR/patches/adafruit_mp3/"
+    printf '%s\n' "$AUDIODSP_RESOLVED" > "$AUDIODSP_PIN_FILE"
+    echo "Synced patches/adafruit_mp3/ from audiodsp@${AUDIODSP_RESOLVED}"
 fi
 
 if [[ "$CHECK" -eq 1 ]]; then
     if [[ "$DRIFT" -ne 0 ]]; then
         echo
         echo "Mirror drift detected against pinned commits. Re-run without --check to resync," >&2
-        echo "or bump MICROPYTHON_PYDEVICES_COMMIT / AUDIOIF_PATCHES_COMMIT after verifying the source change." >&2
+        echo "or bump MICROPYTHON_PYDEVICES_COMMIT / AUDIODSP_PATCHES_COMMIT after verifying the source change." >&2
         exit 1
     fi
     echo "No drift: mirrors match pinned commits."
     echo "  micropython-pydevices @ ${MP_RESOLVED}"
-    echo "  audioif @ ${AUDIOIF_RESOLVED}"
+    echo "  audiodsp @ ${AUDIODSP_RESOLVED}"
 else
     echo
     echo "Commit when ready:"
-    echo "  git add MICROPYTHON_PYDEVICES_COMMIT AUDIOIF_PATCHES_COMMIT patches wasmbridge variants/webassembly/pydevices"
-    echo "  git commit -m \"Sync overlay mirrors from micropython-pydevices@${MP_RESOLVED:0:12} / audioif@${AUDIOIF_RESOLVED:0:12}.\""
+    echo "  git add MICROPYTHON_PYDEVICES_COMMIT AUDIODSP_PATCHES_COMMIT patches wasmbridge variants/webassembly/pydevices"
+    echo "  git commit -m \"Sync overlay mirrors from micropython-pydevices@${MP_RESOLVED:0:12} / audiodsp@${AUDIODSP_RESOLVED:0:12}.\""
 fi