CNPRetainAudio does not return audio bytes on speech recognition

The information in this article applies to:

• SpeechKit 8

Symptoms

The runtime property CNPRetainAudio indicates whether the speech recognition API interfaces should retain audio used for speech recognition. The StartRecording method is used only for providing audio source streams for speech recognition.

Setting CNPRetainAudio to 1 indicates audio should be retained during speech recognition. However setting the value did not cause the audio bytes to be returned with recognized text.

Cause

The runtime property was set properly. However, a header file was missing virtual declaration to enable inheritance for audio handling routines on speech recognition events for the various recognition APIs.

Status

Fixed in SpeechKit 8 build 8.1.0.1.

Component Formats Impacted

All component formats.