Add some delay between audio processing and sound to user

Question

It's hard to explain, but I will try to do it...

Is that possible to add some delay between audio processing and sound from speakers to user?

I'm use the Speech framework to recognise an audio file (using SFSpeechAudioBufferRecognitionRequest and AVAudioEngine to stream an audio file) and get the final result from recogniser after user already heard a sound from speakers.

But a sound should appears after I get some result from recogniser. Need to add some latency between input to recogniser from my AVAudioMixerNode and sound to user.

if (self.recognizer?.isAvailable)! {

   let recordingFormat = self.node.outputFormat(forBus: 0)
   self.node.installTap(onBus: 0, bufferSize: 2048, format: recordingFormat) { buffer, _ in
       self.request?.append(buffer)
   }
                        
   self.task = self.recognizer.recognitionTask(with: self.request!, resultHandler: { [weak self] result, error in
       guard let self = self, let result = result else { return }
                            
       print("Result: \(result.bestTranscription.formattedString)") // Need to print the result before user heard a sound from speakers
   })
                        
}