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. 2018 Aug 17;22:2331216518790903. doi: 10.1177/2331216518790903

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© The Author(s) 2018

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Contours of ECRs for the fast-acting (first row), slow-acting (second row), SNR-aware (third row), and ideal SNR-aware compressor (fourth row) as a function of the input SNR and the channel center frequency. Results were averaged across all four noise types. The left, middle, and right columns show results for shadow-filtered speech, shadow-filtered noise, and noisy speech, respectively. ECR = effective compression ratio; SNR = signal-to-noise ratio.