14. A system for determining pronunciation issues, comprising: a processor and memory; an operating environment executing using the processor; text comprising sentences and a recording that corresponds to the text; a Text-To-Speech (TTS) component configured to generate synthesized speech using the text; a Speech Recognition (SR) component configured to recognize speech; and a pronunciation issue detector that is configured to perform actions comprising: receiving the synthesized speech generated by the TTS component; evaluating results received by an evaluation performed at a text level by determining a similarity of the synthesized speech to the recording; evaluating results obtained from the SR component related to different inputs to the SR component comprising the synthesized speech and the recording; evaluating results from a signal level evaluation of the text and the recording; and generating a list that includes a ranking of pronunciation issue candidates based on the evaluations.
14. A system for determining pronunciation issues, comprising: a processor and memory; an operating environment executing using the processor; text comprising sentences and a recording that corresponds to the text; a Text-To-Speech (TTS) component configured to generate synthesized speech using the text; a Speech Recognition (SR) component configured to recognize speech; and a pronunciation issue detector that is configured to perform actions comprising: receiving the synthesized speech generated by the TTS component; evaluating results received by an evaluation performed at a text level by determining a similarity of the synthesized speech to the recording; evaluating results obtained from the SR component related to different inputs to the SR component comprising the synthesized speech and the recording; evaluating results from a signal level evaluation of the text and the recording; and generating a list that includes a ranking of pronunciation issue candidates based on the evaluations. 19. The system of claim 14 , wherein generating the list that includes the ranking of pronunciation issue candidates comprises filtering out mismatched words for judgment labels based on at least one of the evaluations using the synthesized speech and the recording.