Abstract
New technology in the Freedom® speech processor for cochlear implants was developed to improve how incoming acoustic sound is processed; this applies not only for new users, but also for previous generations of cochlear implants. AimTo identify the contribution of this technology – the Nucleus 22® – on speech perception tests in silence and in noise, and on audiometric thresholds. MethodsA cross-sectional cohort study was undertaken. Seventeen patients were selected. The last map based on the Spectra® was revised and optimized before starting the tests. Troubleshooting was used to identify malfunction. To identify the contribution of the Freedom® technology for the Nucleus22®, auditory thresholds and speech perception tests were performed in free field in soundproof booths. Recorded monosyllables and sentences in silence and in noise (SNR = 0dB) were presented at 60 dBSPL. The nonparametric Wilcoxon test for paired data was used to compare groups. ResultsFreedom® applied for the Nucleus22® showed a statistically significant difference in all speech perception tests and audiometric thresholds. ConclusionThe reedom® technology improved the performance of speech perception and audiometric thresholds of patients with Nucleus 22®.
Highlights
The first Brazilian multichannel cochlear implant surgeries were done in 19991, using the Spectra Bodyworn speech processor, from Cochlear Corporation®, which works well with the Nucleus 22® internal unit.Throughout the years, new Technologies have been launched and cochlear implant companies developed speech processors for the previous internal units, avoiding the need for a new surgical procedure[2,3,4].In 2006, the Freedom® processor was launched, with new Technologies, among which two microphones and a new chip for signal processing, providing improvements in the processing of the input acoustic sound, for new users and for patients with previous generations of cochlear implant.In 2009, the replacement parts for the Nucleus 22® system were no longer manufactured
The reedom® technology improved the performance of speech perception and audiometric thresholds of patients with Nucleus 22®
Paper submitted to the BJORL-SGP (Publishing Management System – Brazilian Journal of Otorhinolaryngology) on June 06, 2011; and accepted on October 11, 2011. cod. 8063
Summary
The first Brazilian multichannel cochlear implant surgeries were done in 19991, using the Spectra Bodyworn speech processor, from Cochlear Corporation®, which works well with the Nucleus 22® internal unit.Throughout the years, new Technologies have been launched and cochlear implant companies developed speech processors for the previous internal units, avoiding the need for a new surgical procedure[2,3,4].In 2006, the Freedom® processor was launched, with new Technologies, among which two microphones and a new chip for signal processing, providing improvements in the processing of the input acoustic sound, for new users and for patients with previous generations of cochlear implant.In 2009, the replacement parts for the Nucleus 22® system were no longer manufactured. The first Brazilian multichannel cochlear implant surgeries were done in 19991, using the Spectra Bodyworn speech processor, from Cochlear Corporation®, which works well with the Nucleus 22® internal unit. Throughout the years, new Technologies have been launched and cochlear implant companies developed speech processors for the previous internal units, avoiding the need for a new surgical procedure[2,3,4]. In 2006, the Freedom® processor was launched, with new Technologies, among which two microphones and a new chip for signal processing, providing improvements in the processing of the input acoustic sound, for new users and for patients with previous generations of cochlear implant. Numerous studies have shown the advantage in exchanging it for more modern processors; the direct exchange of the Spectra® for the Freedom® was not studied, nor reported[3,5]
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