Previous accent conversion (AC) methods, including foreign accent conversion (FAC), lack explicit control over the degree of modification. Because accent modification can alter the perceived speaker identity, balancing conversion strength and identity preservation is crucial. We present an AC framework that provides an explicit, user-controllable parameter for accent modification. The method targets pronunciation while preserving suprasegmental cues such as intonation and phoneme durations. Results show performance comparable to recent AC systems, stronger preservation of speaker identity, and unique support for controllable accent conversion.

翻译：以往的口音转换方法，包括外语口音转换，缺乏对修改程度的显式控制。由于口音修改可能改变感知到的说话人身份，平衡转换强度与身份保持至关重要。我们提出了一种口音转换框架，为口音修改提供了一个显式的、用户可控的参数。该方法针对发音进行修改，同时保留超音段线索，如语调和音素时长。结果表明，其性能与近期的口音转换系统相当，在说话人身份保持方面表现更强，并独特地支持可控的口音转换。