in direct proportion to the quality of speech. The higher the quality of speech, the higher the quality of interpretation. However, using a near-full marks speech material, the quality of MI is still low (67.3%), which cannot meet users’ basic needs in traveling.
From the qualitative perspective, MI’s quality is affected by the following aspects: speech recognitions, cultural transformations, redundancy reduction, amplification, appellation and noun confusion, numbers translation, and AI speeches.
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