Abstract：
Although the telephone band (0.3-3 kHz) provides sufficient information for speech recognition, the contribution of the non-telephone band (<0.3 and >3 kHz) is unclear. To investigate its contribution, speech intelligibility and talker identification were evaluated using consonants, vowels, and sentences. The non-telephone band produced relatively good intelligibility for consonants (76.0%) and sentences (77.4%), but not vowels (11.5%). The non-telephone band supported good talker identification only with sentences (74.5%), but not vowels (45.8%) or consonants (10.8%). Furthermore, the non-telephone band cannot produce satisfactory speech intelligibility in noise at the sentence level, suggesting the importance of full-band access in realistic listening.
摘要：
尽管电话频段（0.3-3kHz）为语音识别提供了足够的信息，非电话频段（<0.3和>3kHz）的贡献尚不清楚。为了调查它的贡献，使用辅音评估语音清晰度和说话者识别，元音,和句子。非电话频段对辅音（76.0％）和句子（77.4％）产生了相对较好的清晰度，但不是元音（11.5%）。非电话频段仅支持句子的良好说话者识别（74.5％），但不是元音（45.8％）或辅音（10.8％）。此外，非电话频段在句子级别的噪声中不能产生令人满意的语音清晰度，暗示了全波段接入在现实听力中的重要性。
