This multiple case study investigated high school teachers' perceptions of how using audio feedback influenced their writing instruction and self-efficacy. Results indicated that teachers believed they gave more high quality, personalized feedback to students in less time with the audio than with written feedback, which positively influenced their self-efficacy.
Bless, Martha M., "Impact of Audio Feedback Technology on Writing Instruction" (2017). NERA Conference Proceedings 2017. 1.