Bastos Cordeiro Bianca, Banhara Marcos Roberto, Cardeal Mendes Carlos Maurício, Danieli Fabiana, Laplante-Lévesque Ariane, Karoui Chadlia, Hoen Michel, Ardoint Marine, Gauvrit Fanny, Demullier Romane, Vincent Christophe
Institute of Health Sciences, Federal University of Bahia, Salvador 40110-100, Brazil.
Department of Life Sciences, Bahia State University, Salvador 41150-000, Brazil.
Audiol Res. 2021 Apr 16;11(2):179-191. doi: 10.3390/audiolres11020016.
The Oticon Medical Neuro cochlear implant system includes the modes Opti Omni and Speech Omni, the latter providing beamforming (i.e., directional selectivity) in the high frequencies. Two studies compared sentence identification scores of adult cochlear implant users with Opti Omni and Speech Omni. In Study 1, a double-blind longitudinal crossover study, 12 new users trialed Opti Omni or Speech Omni (random allocation) for three months, and their sentence identification in quiet and noise (+10 dB signal-to-noise ratio) with the trialed mode were measured. The same procedure was repeated for the second mode. In Study 2, a single-blind study, 11 experienced users performed a speech identification task in quiet and at relative signal-to-noise ratios ranging from -3 to +18 dB with Opti Omni and Speech Omni. The Study 1 scores in quiet and in noise were significantly better with Speech Omni than with Opti Omni. Study 2 scores were significantly better with Speech Omni than with Opti Omni at +6 and +9 dB signal-to-noise ratios. Beamforming in the high frequencies, as implemented in Speech Omni, leads to improved speech identification in medium levels of background noise, where cochlear implant users spend most of their day.
奥迪康医疗公司的Neuro人工耳蜗植入系统包括Opti Omni和Speech Omni模式，后者在高频段提供波束形成（即方向选择性）。两项研究比较了使用Opti Omni和Speech Omni模式的成人人工耳蜗植入用户的句子识别得分。在研究1中，一项双盲纵向交叉研究，12名新用户试用Opti Omni或Speech Omni（随机分配）三个月，并测量他们在安静环境和噪声环境（信噪比为+10 dB）下使用试用模式时的句子识别情况。对第二种模式重复相同的程序。在研究2中，一项单盲研究，11名有经验的用户在安静环境以及信噪比从-3到+18 dB的相对环境下使用Opti Omni和Speech Omni进行语音识别任务。研究1中，在安静环境和噪声环境下，使用Speech Omni模式的得分显著高于使用Opti Omni模式。在研究2中，在信噪比为+6 dB和+9 dB时，使用Speech Omni模式的得分显著高于使用Opti Omni模式。Speech Omni模式中实现的高频波束形成，在中等背景噪声水平下可提高语音识别能力，而人工耳蜗植入用户一天中的大部分时间都处于这种环境中。
