diff --git a/README.md b/README.md
index 4beeaca..6554782 100644
--- a/README.md
+++ b/README.md
@@ -10,11 +10,21 @@ GPL v3. Derived from FreeDMR / HBlink.
 
 - Python 3.10+
 - Dependencies: `pip install -r requirements.txt`
+- **ffmpeg** (system package) — required for voice/TTS. Install via your distro:
+  - Debian/Ubuntu: `apt install ffmpeg`
+  - openSUSE: `zypper install ffmpeg`
+  - Fedora/RHEL: `dnf install ffmpeg` or `yum install ffmpeg`
 
 ## Configuration
 
 Copy `adn-server.example.yaml` to `adn-server.yaml` and edit with your settings. Production config is not committed.
 
+### Voice configuration
+
+Voice features (announcements, TTS, recording) use a separate config file. Copy `adn-voice.example.yaml` to `adn-voice.yaml` and edit. If the file does not exist, voice features are disabled (no error). Changes are hot-reloaded every 15 seconds.
+
+TTS (Text-to-Speech) requires **ffmpeg** installed on the system (see Requirements above). The pipeline is: `.txt` → gTTS → `.mp3` → ffmpeg → `.wav` → vocoder → `.ambe`
+
 ## Run
 
 ```bash
diff --git a/pyproject.toml b/pyproject.toml
index aae7e7d..dcbfc7a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,9 +16,9 @@ dependencies = [
     "Twisted>=22.0",
     "dmr_utils3>=0.1.19",
     "pyyaml>=6.0",
-    "setproctitle>=1.3",
     "bitarray>=2.0",
     "cryptography>=41.0",
+    "gTTS>=2.3.1",
 ]
 
 [project.optional-dependencies]
diff --git a/requirements.txt b/requirements.txt
index 4836e44..caa1be1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,6 @@
 Twisted>=22.0.0
 dmr_utils3>=0.1.19
 pyyaml>=6.0
-setproctitle>=1.3.0
 bitarray>=2.0.0
 cryptography>=41.0.0
+gTTS>=2.3.1