The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Vincent Pluvinage - One of the best experts on this subject based on the ideXlab platform.
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evaluation of a dual channel Full Dynamic Range compression system for people with sensorineural hearing loss
Ear and Hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:ABSTRACTThis article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency bet
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Evaluation of a dual-channel Full Dynamic Range compression system for people with sensorineural hearing loss.
Ear and hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:This article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency between the two bands and the gain and compression ratio in each band are programmable to suit the individual patient. Twenty subjects with moderate sensorineural hearing loss were tested in a counterbalanced order using the aid programmed as a linear amplifier (condition L) and as a two-band compressor (condition C). All subjects were fitted binaurally. Subjects were also tested without hearing aids (condition U) and using the hearing aids that they normally wore (condition Own). Speech intelligibility was measured in quiet at three sound levels (50, 65, and 80 dB SPL), and speech reception thresholds (SRTs) in 12-talker babble were measured under monaurally and binaurally aided conditions, with the speech and babble both coincident and spatially separated. In condition C, speech intelligibility in quiet was high at all sound levels. Speech intelligibility at the two lower levels decreased in condition L, and decreased still further in conditions Own and U. Condition C gave, on average, better speech intelligibility in babble (lower SRTs) than conditions L, Own, or U. The advantage of condition C over condition L varied across subjects and was correlated with the Dynamic Range for tones at high frequencies; small Dynamic Ranges were associated with greater benefit from compression. A significant advantage for binaural aiding was found both when the speech and noise were spatially separated and when they were coincident. The binaural advantage was similar for the C and L conditions, indicating that the independent compression at the two ears did not adversely affect the use of binaural cues. Questionnaires on the subjects' experiences with the aids in everyday life indicated that they generally preferred condition C over condition L.
Brian C J Moore - One of the best experts on this subject based on the ideXlab platform.
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evaluation of a dual channel Full Dynamic Range compression system for people with sensorineural hearing loss
Ear and Hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:ABSTRACTThis article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency bet
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Evaluation of a dual-channel Full Dynamic Range compression system for people with sensorineural hearing loss.
Ear and hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:This article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency between the two bands and the gain and compression ratio in each band are programmable to suit the individual patient. Twenty subjects with moderate sensorineural hearing loss were tested in a counterbalanced order using the aid programmed as a linear amplifier (condition L) and as a two-band compressor (condition C). All subjects were fitted binaurally. Subjects were also tested without hearing aids (condition U) and using the hearing aids that they normally wore (condition Own). Speech intelligibility was measured in quiet at three sound levels (50, 65, and 80 dB SPL), and speech reception thresholds (SRTs) in 12-talker babble were measured under monaurally and binaurally aided conditions, with the speech and babble both coincident and spatially separated. In condition C, speech intelligibility in quiet was high at all sound levels. Speech intelligibility at the two lower levels decreased in condition L, and decreased still further in conditions Own and U. Condition C gave, on average, better speech intelligibility in babble (lower SRTs) than conditions L, Own, or U. The advantage of condition C over condition L varied across subjects and was correlated with the Dynamic Range for tones at high frequencies; small Dynamic Ranges were associated with greater benefit from compression. A significant advantage for binaural aiding was found both when the speech and noise were spatially separated and when they were coincident. The binaural advantage was similar for the C and L conditions, indicating that the independent compression at the two ears did not adversely affect the use of binaural cues. Questionnaires on the subjects' experiences with the aids in everyday life indicated that they generally preferred condition C over condition L.
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Effects of the fitting parameters of a two-channel compression system on the intelligibility of speech in quiet and in noise.
British journal of audiology, 1992Co-Authors: Brian C J Moore, Cathy Lynch, Michael A. StoneAbstract:These experiments were carried out to assess how accurately the gains and compression ratios in a two-channel compression system needed to be set. We used as a research tool a laboratory version of a two-channel Full-Dynamic-Range compression system. The system was initially adjusted to suit each hearing-impaired subject according to the manufacturer's recommendations. Then, further adjustments were made to ensure that speech stimuli were both audible and comfortable over a wide Range of sound levels. Finally, the settings of the gains and compression ratios were systematically varied from the adjusted values and the effects of this on the intelligibility of speech in quiet and in noise (12-talker babble, levels of 65 and 75 dB SPL) were measured. The results indicated that speech reception thresholds (SRTs) in quiet were significantly adversely affected by decreases in low-level gain. However, SRTs in noise were relatively unaffected by changes in low-level gain. An exception occurred at the higher noise...
Tg Constandinou - One of the best experts on this subject based on the ideXlab platform.
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Continuous-time micropower interface for neural recording applications
'Institute of Electrical and Electronics Engineers (IEEE)', 2016Co-Authors: Elia M, Leene L, Tg ConstandinouAbstract:This paper presents a novel amplifier architecture intended for low power neural recording applications. By using continuous-time signal representation, the proposed topology predominantly leverages digital topologies taking advantage of efficient techniques used in time domain systems. This includes higher order feedback Dynamics that allow direct analogue signal quantization and near ideal integrator structures for noise shaping. The system implemented in 0.18 μ m standard CMOS demonstrates the capability for low noise instrumentation with a bandwidth of 6 kHz and highly linear Full Dynamic Range. Simulation results indicate 1.145 μW budget from 0.5 V supply voltage with an input referred thermal noise of 7.7 μVrms
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ISCAS - Continuous-time micropower interface for neural recording applications
2016 IEEE International Symposium on Circuits and Systems (ISCAS), 2016Co-Authors: Marios Elia, Lieuwe B. Leene, Tg ConstandinouAbstract:This paper presents a novel amplifier architecture intended for low power neural recording applications. By using continuous-time signal representation, the proposed topology predominantly leverages digital topologies taking advantage of efficient techniques used in time domain systems. This includes higher order feedback Dynamics that allow direct analogue signal quantization and near ideal integrator structures for noise shaping. The system implemented in 0.18 μ m standard CMOS demonstrates the capability for low noise instrumentation with a bandwidth of 6 kHz and highly linear Full Dynamic Range. Simulation results indicate 1.145 μW budget from 0.5 V supply voltage with an input referred thermal noise of 7.7 μVrms
Jeannette Seloover Johnson - One of the best experts on this subject based on the ideXlab platform.
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evaluation of a dual channel Full Dynamic Range compression system for people with sensorineural hearing loss
Ear and Hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:ABSTRACTThis article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency bet
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Evaluation of a dual-channel Full Dynamic Range compression system for people with sensorineural hearing loss.
Ear and hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:This article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency between the two bands and the gain and compression ratio in each band are programmable to suit the individual patient. Twenty subjects with moderate sensorineural hearing loss were tested in a counterbalanced order using the aid programmed as a linear amplifier (condition L) and as a two-band compressor (condition C). All subjects were fitted binaurally. Subjects were also tested without hearing aids (condition U) and using the hearing aids that they normally wore (condition Own). Speech intelligibility was measured in quiet at three sound levels (50, 65, and 80 dB SPL), and speech reception thresholds (SRTs) in 12-talker babble were measured under monaurally and binaurally aided conditions, with the speech and babble both coincident and spatially separated. In condition C, speech intelligibility in quiet was high at all sound levels. Speech intelligibility at the two lower levels decreased in condition L, and decreased still further in conditions Own and U. Condition C gave, on average, better speech intelligibility in babble (lower SRTs) than conditions L, Own, or U. The advantage of condition C over condition L varied across subjects and was correlated with the Dynamic Range for tones at high frequencies; small Dynamic Ranges were associated with greater benefit from compression. A significant advantage for binaural aiding was found both when the speech and noise were spatially separated and when they were coincident. The binaural advantage was similar for the C and L conditions, indicating that the independent compression at the two ears did not adversely affect the use of binaural cues. Questionnaires on the subjects' experiences with the aids in everyday life indicated that they generally preferred condition C over condition L.
Teresa M Clark - One of the best experts on this subject based on the ideXlab platform.
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evaluation of a dual channel Full Dynamic Range compression system for people with sensorineural hearing loss
Ear and Hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:ABSTRACTThis article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency bet
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Evaluation of a dual-channel Full Dynamic Range compression system for people with sensorineural hearing loss.
Ear and hearing, 1992Co-Authors: Brian C J Moore, Jeannette Seloover Johnson, Teresa M Clark, Vincent PluvinageAbstract:This article describes an evaluation of an in the ear hearing aid, which applies fast-acting Full Dynamic Range compression independently in two frequency bands. This can compensate for the loudness recruitment typically associated with sensorineural hearing loss. The crossover frequency between the two bands and the gain and compression ratio in each band are programmable to suit the individual patient. Twenty subjects with moderate sensorineural hearing loss were tested in a counterbalanced order using the aid programmed as a linear amplifier (condition L) and as a two-band compressor (condition C). All subjects were fitted binaurally. Subjects were also tested without hearing aids (condition U) and using the hearing aids that they normally wore (condition Own). Speech intelligibility was measured in quiet at three sound levels (50, 65, and 80 dB SPL), and speech reception thresholds (SRTs) in 12-talker babble were measured under monaurally and binaurally aided conditions, with the speech and babble both coincident and spatially separated. In condition C, speech intelligibility in quiet was high at all sound levels. Speech intelligibility at the two lower levels decreased in condition L, and decreased still further in conditions Own and U. Condition C gave, on average, better speech intelligibility in babble (lower SRTs) than conditions L, Own, or U. The advantage of condition C over condition L varied across subjects and was correlated with the Dynamic Range for tones at high frequencies; small Dynamic Ranges were associated with greater benefit from compression. A significant advantage for binaural aiding was found both when the speech and noise were spatially separated and when they were coincident. The binaural advantage was similar for the C and L conditions, indicating that the independent compression at the two ears did not adversely affect the use of binaural cues. Questionnaires on the subjects' experiences with the aids in everyday life indicated that they generally preferred condition C over condition L.
