Speech Understanding in Noise With the Medel Opus2 and the Rondo … · Speech Understanding in...
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Speech Understanding in Noise With the Medel Opus2 and the Rondo Sound Processors M. Kompis W. Wimmer P. Senn M. Caversaccio University Department of ENT, Head and Neck Surgery, Inselspital, Bern, Switzerland
Transcript of Speech Understanding in Noise With the Medel Opus2 and the Rondo … · Speech Understanding in...
Speech Understanding in Noise With the Medel Opus2 and the Rondo Sound Processors
M. Kompis W. Wimmer P. Senn M. Caversaccio
University Department of ENT, Head and Neck Surgery, Inselspital, Bern, Switzerland
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Opus 2 and Rondo Sound Processor • Electrically identical • Different housing • Different microphone positions:
Opus 2: Rondo:
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Materials and Methods (1) • Measurement of speech understanding in noise
– German adaptive sentence test (OLSA) – Comparing performance between
• Opus2 • Rondo
– 4 different spatial settings (Green: test sentences; red: noise): S0N0 S0NIL S0N180 S0NCL
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Materials and Methods (1) • Experimental setting:
S0N0 S0NIL S0N180 S0NCL
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Materials and Methods (2)
• 12 experienced (> 1 year) Opus2 users – 7 women, 5 men – Age 25-73 (average 52.2 years) – 5 right, 7 left
• Same settings (Map, volume, and sensitivity) for Rondo and Opus 2
• Position of the Rondo-processor (angle θ) was measured using a laser-pointer
θ
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Results
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Results
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Positions further to the back gives poorer speech understanding in noise from the rear
θ
Linear correlation: r=0.65 Slope differs significantly from 0 (p<0.05)
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Could this be improved?
• Directional multi-microphone noise reduction • Ongoing study:
– Sonnet audio processor with directionality (same manufacturer)
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Sonnet (directional mode) vs. Opus 2 N=8 (ongoing study)
Prof. Dr. Dr. Martin Kompis
University Department of ENT, Head and Neck Surgery, Bern, Switzerland
Conclusions • No significant differences between Rondo und Opus 2 for
– noise from the front or from either side – The 2 sound processors are basically identical
• Significant lower speech understanding with the Rondo for noise from the rear – 4.4 dB SNR, p<0.0001
• The further to the back, the poorer speech understanding with the Rondo in noise from rear
• Directional multi-microphones systems (such as in the Sonnet) may improve the situation
Thank you for your attention.
University Department of ENT, Head and Neck Surgery, Inselspital, Bern, Switzerland
