De Ceulaer Geert, Swinnen Freya, Pascoal David, Philips Birgit, Killian Matthijs, James Chris, Govaerts Paul J, Dhooge Ingeborg
Cochlear Implants Int. 2015 Jul;16(4):222-32. doi: 10.1179/1754762814Y.0000000097. Epub 2014 Oct 6.
Cochlear's new sound processor system (Nucleus(®) 6) features a new noise reduction algorithm called SNR-NR (signal-to-noise ratio), and an environmental classifier called SCAN, which activates the appropriate sound coding algorithms for a given listening environment. In addition, the sound processors (CP910 and CP920) have a data logging feature with data visually summarized using clinical programing software and come with two remote controls, CR210 and CR230. The objective of this clinical study was to conduct a field acceptance study comparing the user experience with the Nucleus(®) 6 to the Nucleus(®) 5 system and to evaluate the benefits of Nucleus(®) 6 in an adult population currently equipped with the previous generation Nucleus(®) 5 sound processor. Our primary objective was to compare speech recognition in speech-weighted noise using Nucleus(®) 6 with SCAN (activating SNR-NR) with the default Nucleus(®) 5 'Noise' Program. Secondary objectives included comparisons of speech recognition in quiet, subjective performance feedback via questionnaires and diaries, and recipient preference for device and program type.
A prospective controlled trial was conducted with 30 adult Nucleus CI recipients using the Nucleus(®) 5 sound processor (condition A). The Nucleus(®) 6 sound processor (condition B) was evaluated in a within-subject ABBA design, with repeated speech in noise (S0N0, LIST sentence test), and speech in quiet testing (S0, NVA words). The remote controls were randomly given during the two B intervals. In addition, recipients had to complete questionnaires and diaries on the use of their current as well as new sound processors and remotes.
The group mean speech reception threshold in noise (SRT50) with Nucleus(®) 6 SCAN was significantly better (1.2 dB SNR) than with the Nucleus(®) 5 'Noise' Program. Mean speech recognition scores in quiet were not significantly different between the processors. Subjective performance feedback (APHAB) did not show a significant difference between Nucleus(®) 6 and Nucleus(®) 5 with high satisfaction scores being reported for both sound processors. Recipients preferred the SCAN program in noise and reported a clear overall preference for the Nucleus(®) 6 system. Clinicians were satisfied with the conversion process from Nucleus(®) 5 to Nucleus(®) 6.
SNR-NR provides a significant benefit in noise. Recipients were easily converted from Nucleus(®) 5 to Nucleus(®) 6 requiring little or no sound quality adjustment period. The Nucleus(®) 6 SCAN program was well accepted by the majority of recipients for use during their daily life.
科利耳公司的新型声音处理器系统（Nucleus(®) 6）具有一种名为SNR-NR（信噪比）的新型降噪算法，以及一种名为SCAN的环境分类器，它能针对特定的聆听环境激活相应的声音编码算法。此外，声音处理器（CP910和CP920）具有数据记录功能，可使用临床编程软件直观地汇总数据，并且配备了两个遥控器，即CR210和CR230。这项临床研究的目的是进行一项现场验收研究，比较使用Nucleus(®) 6与Nucleus(®) 5系统的用户体验，并评估Nucleus(®) 6对于目前配备上一代Nucleus(®) 5声音处理器的成年人群的益处。我们的主要目的是比较使用带有SCAN（激活SNR-NR）功能的Nucleus(®) 6与默认的Nucleus(®) 5“噪声”程序在言语加权噪声中的言语识别能力。次要目的包括比较安静环境下的言语识别能力、通过问卷和日记获得的主观性能反馈，以及佩戴者对设备和程序类型的偏好。
对30名使用Nucleus(®) 5声音处理器的成年Nucleus CI佩戴者进行了一项前瞻性对照试验（A组）。采用受试者内ABBA设计对Nucleus(®) 6声音处理器（B组）进行评估，包括在噪声中重复言语（S0N0，LIST句子测试）以及安静环境下的言语测试（S0，NVA单词）。在两个B阶段随机发放遥控器。此外，佩戴者必须完成关于他们当前以及新声音处理器和遥控器使用情况的问卷和日记。
使用Nucleus(®) 6的SCAN功能时，该组在噪声中的平均言语接受阈值（SRT50）比使用Nucleus(®) 5“噪声”程序时显著更好（信噪比提高1.2 dB）。两个处理器在安静环境下的平均言语识别分数没有显著差异。主观性能反馈（APHAB）在Nucleus(®) 6和Nucleus(®) 5之间没有显示出显著差异，两种声音处理器的满意度评分都很高。佩戴者在噪声环境中更喜欢SCAN程序，并表示总体上明显更倾向于Nucleus(®) 6系统。临床医生对从Nucleus(®) 5转换到Nucleus(®) 6的过程感到满意。
SNR-NR在噪声环境中提供了显著益处。佩戴者能够轻松地从Nucleus(®) 5转换到Nucleus(®) 6，几乎不需要或只需很少的声音质量调整期。Nucleus(®) 6的SCAN程序在大多数佩戴者的日常生活中得到了很好的接受。
