feat: ability to select audio input device

aider/args.py

@@ -22,7 +22,7 @@ def default_env_file(git_root):
 
 def get_parser(default_config_files, git_root):
     parser = configargparse.ArgumentParser(
-        description="aider is AI pair programming in your terminal",
+        description="Aider is AI pair programming in your terminal",
         add_config_file_help=True,
         default_config_files=default_config_files,
         config_file_parser_class=configargparse.YAMLConfigFileParser,
@@ -770,6 +770,12 @@ def get_parser(default_config_files, git_root):
         default="en",
         help="Specify the language for voice using ISO 639-1 code (default: auto)",
     )
+    group.add_argument(
+        "--voice-input-device",
+        metavar="VOICE_INPUT_DEVICE",
+        default=None,
+        help="Specify the input device name for voice recording",
+    )
 
     return parser
 

aider/commands.py

@@ -1085,7 +1085,7 @@ class Commands:
                 self.io.tool_error("To use /voice you must provide an OpenAI API key.")
                 return
             try:
-                self.voice = voice.Voice(audio_format=self.args.voice_format)
+                self.voice = voice.Voice(audio_format=self.args.voice_format, device_name=self.args.voice_input_device)
             except voice.SoundDeviceError:
                 self.io.tool_error(
                     "Unable to import `sounddevice` and/or `soundfile`, is portaudio installed?"

aider/voice.py

@@ -34,7 +34,7 @@ class Voice:
 
     threshold = 0.15
 
-    def __init__(self, audio_format="wav"):
+    def __init__(self, audio_format="wav", device_name=None):
         if sf is None:
             raise SoundDeviceError
         try:
@@ -42,6 +42,27 @@ class Voice:
             import sounddevice as sd
 
             self.sd = sd
+
+
+            devices = sd.query_devices()
+
+            if device_name:
+                # Find the device with matching name
+                device_id = None
+                for i, device in enumerate(devices):
+                    if device_name in device["name"]:
+                        device_id = i
+                        break
+                if device_id is None:
+                    available_inputs = [d["name"] for d in devices if d["max_input_channels"] > 0]
+                    raise ValueError(f"Device '{device_name}' not found. Available input devices: {available_inputs}")
+
+                print(f"Using input device: {device_name} (ID: {device_id})")
+
+                self.device_id = device_id
+            else:
+                self.device_id = None
+
         except (OSError, ModuleNotFoundError):
             raise SoundDeviceError
         if audio_format not in ["wav", "mp3", "webm"]:
@@ -93,7 +114,7 @@ class Voice:
         temp_wav = tempfile.mktemp(suffix=".wav")
 
         try:
-            sample_rate = int(self.sd.query_devices(None, "input")["default_samplerate"])
+            sample_rate = int(self.sd.query_devices(self.device_id, "input")["default_samplerate"])
         except (TypeError, ValueError):
             sample_rate = 16000  # fallback to 16kHz if unable to query device
         except self.sd.PortAudioError:
@@ -104,7 +125,7 @@ class Voice:
         self.start_time = time.time()
 
         try:
-            with self.sd.InputStream(samplerate=sample_rate, channels=1, callback=self.callback):
+            with self.sd.InputStream(samplerate=sample_rate, channels=1, callback=self.callback, device=self.device_id):
                 prompt(self.get_prompt, refresh_interval=0.1)
         except self.sd.PortAudioError as err:
             raise SoundDeviceError(f"Error accessing audio input device: {err}")

aider/website/assets/sample.env

@@ -368,3 +368,6 @@
 
 ## Specify the language for voice using ISO 639-1 code (default: auto)
 #AIDER_VOICE_LANGUAGE=en
+
+## Specify the voice input device name (default: system default)
+#AIDER_VOICE_INPUT_DEVICE="MacBook Pro Microphone"

aider/website/docs/config/dotenv.md

@@ -410,7 +410,8 @@ cog.outl("```")
 
 ## Specify the language for voice using ISO 639-1 code (default: auto)
 #AIDER_VOICE_LANGUAGE=en
+
+## Specify the voice input device name (default: system default)
+#AIDER_VOICE_INPUT_DEVICE="MacBook Pro Microphone"
 ```
 <!--[[[end]]]-->
-
-

aider/website/docs/config/options.md

@@ -701,4 +701,9 @@ Environment variable: `AIDER_VOICE_FORMAT`
 Specify the language for voice using ISO 639-1 code (default: auto)
 Default: en
 Environment variable: `AIDER_VOICE_LANGUAGE`
+
+### `--voice-input-device VOICE_INPUT_DEVICE`
+Specify the voice input device name used for recording (default: system default)
+Default: system default
+Environment variable: `VOICE_INPUT_DEVICE`
 <!--[[[end]]]-->