ArticleJournal of the Association for Research in Otolaryngology : JARO2020
The Perception of Multiple Simultaneous Pitches as a Function of Number of Spectral Channels and Spectral Spread in a Noise-Excited Envelope Vocoder.
Article in Journal of the Association for Research in Otolaryngology : JARO, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 19 citations in OpenAlex.
- The auditory nerve implant-concept and device description of a novel electrical auditory prosthesis.Bioelectronic medicine · 2025Review
- Cochlear-implant simulated spectral degradation attenuates emotional responses to environmental sounds.International journal of audiology · 2025Article
- How to vocode: Using channel vocoders for cochlear-implant research.The Journal of the Acoustical Society of America · 2024Article
- Lexical Effects on the Perceived Clarity of Noise-Vocoded Speech in Younger and Older Listeners.Frontiers in psychology · 2022Article
- Questions and controversies surrounding the perception and neural coding of pitch.Frontiers in neuroscience · 2022Article
- Estimating the reduced benefit of infant-directed speech in cochlear implant-related speech processing.Neuroscience research · 2021Article
- Channel Interaction During Infrared Light Stimulation in the Cochlea.Lasers in surgery and medicine · 2021Article
- Listening to speech with a guinea pig-to-human brain-to-brain interface.Scientific reports · 2021Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Cochlear implant (CI) listeners typically perform poorly on tasks involving the pitch of complex tones. This limitation in performance is thought to be mainly due to the restricted number of active channels and the broad current spread that leads to channel interactions and subsequent loss of precise spectral information, with temporal information limited primarily to temporal-envelope cues. Little is known about the degree of spectral resolution required to perceive combinations of multiple pitches, or a single pitch in the presence of other interfering tones in the same spectral region. This study used noise-excited envelope vocoders that simulate the limited resolution of CIs to explore the perception of multiple pitches presented simultaneously. The results show that the resolution required for perceiving multiple complex pitches is comparable to that found in a previous study using single complex tones. Although relatively high performance can be achieved with 48 channels, performance remained near chance when even limited spectral spread (with filter slopes as steep as 144 dB/octave) was introduced to the simulations. Overall, these tight constraints suggest that current CI technology will not be able to convey the pitches of combinations of spectrally overlapping complex tones.
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Registered trials
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