rename --convert-to to --sample-rate

README.md

@@ -2,7 +2,7 @@
 
 AudioTee captures your Mac's system audio output and writes PCM encoded chunks of it to `stdout` at regular intervals, either in base64-encoded JSON (good for humans, easy on terminals) or binary (good for other programs). It uses the [Core Audio taps](https://developer.apple.com/documentation/coreaudio/capturing-system-audio-with-core-audio-taps) API introduced in macOS 14.2 (released in December 2023). You can do whatever you want with this audio - stream it somewhere else, save it to disk, visualize it, etc.
 
-By default, it taps the audio output from **all** running process and selects the most appropriate audio chunk output format to use based on the presence of a tty. Tap output is forced to `mono` (not configurable) and preserves your output device's sample rate unless you pass a `--convert-to` flag. Only the default output device is currently supported.
+By default, it taps the audio output from **all** running process and selects the most appropriate audio chunk output format to use based on the presence of a tty. Tap output is forced to `mono` (not configurable) and preserves your output device's sample rate unless you pass a `--sample-rate` flag. Only the default output device is currently supported.
 
 My original (and so far only) use case is streaming audio to a parent process which communicates with a realtime ASR service, so AudioTee makes some design decisions you might not agree with. Open an issue or a PR and we can talk about them. I'm also no Swift developer, so contributions improving codebase idioms and general hygiene are welcome.
 
@@ -50,10 +50,10 @@ Replace the path below with `.build/<arch>/<target>/audiotee`, e.g. `build/arm64
 
 ```bash
 # Convert to 16kHz mono (useful for ASR services)
-./audiotee --convert-to 16000
+./audiotee --sample-rate 16000
 
 # Other supported sample rates: 22050, 24000, 32000, 44100, 48000
-./audiotee --convert-to 44100
+./audiotee --sample-rate 44100
 ```
 
 ### Tap configuration
@@ -229,7 +229,7 @@ Info, error, and debug messages (useful for monitoring):
 - `--include-processes`: Process IDs to tap (space-separated, empty = all processes)
 - `--exclude-processes`: Process IDs to exclude (space-separated, empty = none)
 - `--mute`: Mute processes being tapped
-- `--convert-to`: Convert to sample rate (8000, 16000, 22050, 24000, 32000, 44100, 48000)
+- `--sample-rate`: Target sample rate (8000, 16000, 22050, 24000, 32000, 44100, 48000)
 - `--chunk-duration`: Audio chunk duration in seconds [default: 0.2, max: 5.0]
 
 ## Permissions

Sources/CLI/AudioTee.swift

@@ -22,8 +22,8 @@ struct AudioTee: ParsableCommand {
         audiotee                              # Auto format, tap all processes
         audiotee --format=json                # Always use JSON format
         audiotee --format=binary              # Always use binary format
-        audiotee --convert-to=16000           # Convert to 16kHz mono for ASR
+        audiotee --sample-rate=16000          # Convert to 16kHz mono for ASR
-        audiotee --convert-to=8000            # Convert to 8kHz for telephony
+        audiotee --sample-rate=8000           # Convert to 8kHz for telephony
         audiotee --include-processes 1234     # Only tap process 1234
         audiotee --include-processes 1234 5678 9012  # Tap only these processes
         audiotee --exclude-processes 1234 5678       # Tap everything except these
@@ -47,8 +47,8 @@ struct AudioTee: ParsableCommand {
 
   @Option(
     name: .long,
-    help: "Convert audio to specified sample rate (8000, 16000, 22050, 24000, 32000, 44100, 48000)")
+    help: "Target sample rate (8000, 16000, 22050, 24000, 32000, 44100, 48000)")
-  var convertTo: Double?
+  var sampleRate: Double?
 
   @Option(
     name: .long,
@@ -108,7 +108,7 @@ struct AudioTee: ParsableCommand {
 
     let outputHandler = createOutputHandler(for: format)
     let recorder = AudioRecorder(
-      deviceID: deviceID, outputHandler: outputHandler, convertToSampleRate: convertTo,
+      deviceID: deviceID, outputHandler: outputHandler, convertToSampleRate: sampleRate,
       chunkDuration: chunkDuration)
     recorder.startRecording()