CATALINA: Override automatic mute triggered by Dictation

PROBLEM ==== Transcription Step 2 Instructions indicates: > When you’re running Dictation, your computer automatically mutes all > audio that’s playing. To override this, you’ll need to run two > commands in Terminal I have performed the write-commands and read-commands: user@users-Mac-mini ~ % defaults write com.apple.SpeechRecognitionCore AllowAudioDucking -bool NO user@users-Mac-mini ~ % defaults read com.apple.SpeechRecognitionCore > { > AllowAudioDucking = 0; } user@users-Mac-mini ~ % defaults write com.apple.speech.recognition.AppleSpeechRecognition.prefs DictationIMAllowAudioDucking -bool NO user@users-Mac-mini ~ % defaults read com.apple.speech.recognition.AppleSpeechRecognition.prefs > { > DictationIMAllowAudioDucking = 0; > DictationIMCorrectionCount = 0; > DictationIMIntroMessagePresented = 1; > DictationIMLastDictationDate = "619237426.7170759"; > DictationIMMessageTracesSinceLastReport = 4; > DictationIMSensedMicActivityState = 1; > DictationIMSensedMicIdentifier = "SoundflowerEngine:0"; > "DictationIMUpgradedTo10_15" = 1; } RESEARCH \ REFERENCES === 1. How to keep sound from muting while using dictation? 2. Anyone: please to add relevant links OBSERVATIONS ==== Reference 1 (above) indicates BASH commands overrides mute trigger in Mojave in 10.14.1 Audio drives the input level meter as expected: A speech audio file is started. The text editor is opened: when Dictation is invoked, the input level meter goes dead (audio player automatically muted). QUESTIONS === What can be done to diagnose why the BASH commands were not effective in disable automatic mute?