diff --git a/aider/commands.py b/aider/commands.py
index 2bd602f3c..3a0a2e5f5 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -55,6 +55,7 @@ class Commands:
         coder,
         voice_language=None,
         voice_input_device=None,
+        voice_format=None,
         verify_ssl=True,
         args=None,
         parser=None,
@@ -1119,7 +1120,7 @@ class Commands:
                 self.io.tool_error("To use /voice you must provide an OpenAI API key.")
                 return
             try:
-                self.voice = voice.Voice(audio_format="wav", device_name=self.voice_input_device)
+                self.voice = voice.Voice(audio_format=self.voice_format or "wav", device_name=self.voice_input_device)
             except voice.SoundDeviceError:
                 self.io.tool_error(
                     "Unable to import `sounddevice` and/or `soundfile`, is portaudio installed?"
diff --git a/aider/main.py b/aider/main.py
index 2d0e55e84..26357c447 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -806,6 +806,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
         None,
         voice_language=args.voice_language,
         voice_input_device=args.voice_input_device,
+        voice_format=args.voice_format,
         verify_ssl=args.verify_ssl,
         args=args,
         parser=parser,