This paper reports on the design and outcomes of the ICASSP SP Clarity Challenge: Speech Enhancement for Hearing Aids. The scenario was a listener attending to a target speaker in a noisy, domestic environment. There were multiple interferers and head rotation by the listener. The challenge extended the second Clarity Enhancement Challenge (CEC2) by fixing the amplification stage of the hearing aid; evaluating with a combined metric for speech intelligibility and quality; and providing two evaluation sets, one based on simulation and the other on real-room measurements. Five teams improved on the baseline system for the simulated evaluation set, but the performance on the measured evaluation set was much poorer. Investigations are on-going to determine the exact cause of the mismatch between the simulated and measured data sets. The presence of transducer noise in the measurements, lower order Ambisonics harming the ability for systems to exploit binaural cues and the differences between real and simulated room impulse responses are suggested causes

翻译：本文报告了ICASSP SP Clarity挑战赛（助听器语音增强）的设计与结果。场景设定为听者在嘈杂的家庭环境中聆听目标说话人，存在多个干扰源且听者会转动头部。该挑战扩展了第二届Clarity增强挑战赛（CEC2），具体改进包括：固定助听器放大级、采用语音可懂度与质量联合评估指标、以及提供两套评估数据集（分别基于仿真数据和真实室内测量数据）。在仿真评估集上，五个团队超越了基线系统性能，但实测评估集上的表现明显较差。目前正在开展调查研究，以确定仿真数据与实测数据之间性能差异的根本原因。初步推测的原因包括：测量中存在换能器噪声；低阶Ambisonics技术削弱了系统利用双耳线索的能力；以及真实房间冲激响应与仿真房间冲激响应之间的差异。