Abstract
The purpose of this experiment was to determine a rule for matching the loudness of uncompressed and compressed speech samples. Eight normal hearing and 16 sensorineural hearing‐impaired subjects (divided into four groups of differing severity and configuration) listened to two continuous speech samples (male and female talkers) under conditions of linear and compression amplification. Compression conditions consisted of 12 selected combinations of varying compression ratio, threshold, and release time (compression ratio = 2:1, 4:1, 8:1; knee point = 5, 10, 15, and 20 dB below the highest speech peak; release time = 20, 200 ms). Subjects matched the loudness of the compressed signals to a reference uncompressed signal using an adaptive procedure. Overall levels and cumulative distributions of the processed speech signals were obtained. Estimates of equal loudness based upon rms level and 90th percentile of the cumulative distribution were both found to closely match the gain selected by subjects. [Work supported by NIH Grant No. 2PO1 DC00178.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
