fix: preserve system audio duration

2026-07-29 16:06:44 +02:00
parent 19b17fc9a5
commit 579a91d357
2 changed files with 9 additions and 6 deletions
@@ -138,8 +138,11 @@ final class ProcessTap {
            tapDescription = CATapDescription(stereoMixdownOfProcesses: [process.objectID])
            logger.debug("Configuring tap for single process objectID: \(process.objectID)")
        case .systemAudio:
-            tapDescription = CATapDescription(monoGlobalTapButExcludeProcesses: [])
-            logger.debug("Configuring a global system audio tap.")
+            // Keep the HAL tap's buffer layout consistent with the default
+            // output stream. AudioManager performs the stereo-to-mono mix when
+            // it converts the captured audio to the 16 kHz transcription file.
+            tapDescription = CATapDescription(stereoGlobalTapButExcludeProcesses: [])
+            logger.debug("Configuring a stereo global system audio tap.")
        }
        
        tapDescription.uuid = UUID()