Benefits of Beamforming With Local Spatial-Cue Preservation for Speech Localization and Segregation
Benefits of Beamforming With Local Spatial-Cue Preservation for Speech Localization and Segregation
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DOI：
10.1177/2331216519896908
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发表时间：
2020-01-01
影响因子：
2.7
通讯作者：
Shinn-Cunningham, Barbara G.
中科院分区：
文献类型：
--
作者：
Wang, Le;Best, Virginia;Shinn-Cunningham, Barbara G.
进行了一项研究，以检查信号处理策略所提供的好处，该策略将自然信号中存在的双耳线索（在时间和频率上进行本地计算）施加到波束成形麦克风阵列的输出上。这种策略具有将波束形成的信噪比优势与空间化的感知益处联合收割机相结合以增强多说话者混合中的性能的潜力。听力正常和听力损失的参与者都进行了语音定位和语音掩蔽任务的测试。空间化波束形成器的性能进行了比较，与其他三个条件：一个参考条件，没有处理，波束形成器没有空间化，和一个混合波束形成器，仅在高频操作，以保持自然的双耳线索在低频。全带宽空间化的波束形成支持语音定位，并产生比其他条件更好的语音接收阈值。
A study was conducted to examine the benefits afforded by a signal-processing strategy that imposes the binaural cues present in a natural signal, calculated locally in time and frequency, on the output of a beamforming microphone array. Such a strategy has the potential to combine the signal-to-noise ratio advantage of beamforming with the perceptual benefit of spatialization to enhance performance in multitalker mixtures. Participants with normal hearing and with hearing loss were tested on both speech localization and speech-on-speech masking tasks. Performance for the spatialized beamformer was compared with that for three other conditions: a reference condition with no processing, a beamformer with no spatialization, and a hybrid beamformer that operates only in the high frequencies to preserve natural binaural cues in the low frequencies. Beamforming with full-bandwidth spatialization supported speech localization and produced better speech reception thresholds than the other conditions.