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The current OSF project contains sound recordings for the Swedish audiometric materials called "Hagermans Meningar" (Hagerman's sentences), which form the basis for the original Swedish matrix test. The wave files located in the folder 'Files/Audio files from CD' were taken from the CD 'Svensk talaudiometri, Rev. 1', which in turn was created from the original master (magnetic) audio tapes. Channel 1 of the wave files contains speech signals, and channel 2 contains slightly modulated (SM) noise, both described in Hagerman (1982). In this collection, each list is split into two parts (as was the case on the CD). Also in the folder 'Files/Audio files from CD', the calibration signal from the CD 'Svensk talaudiometri, Rev. 1' has been supplied. According to the original CD documentation, this calibration signal is set to -14 dB below the max level of the speech materials, and is frequency modulated around 1 kHz by ±12.5 %, with a modulation frequency of 20 Hz. Details concerning the digital audio extraction (from the CD to the wave files) can be found in the text file "00 Digital audio extraction notes.txt" also located in the folder 'Files/Audio files from CD'. In the folder 'Whole-list audio files (SM)', the split list recordings have been re-assembled into single wave files, one for each list, also containing the speech signals on the left channel (channel 1) and slightly modulated (SM) noise on the right channel (channel 2). In the folder 'Whole-list audio files (SM) (mono)', the same recordings have been supplied as mono files. The folder 'Audio files - fully modulated noise (FUM)' contains audio files originating from the Hagerman (2002) study. These files contain speech in the left channel (channel 1) and fully modulated (FUM) noise in the right channel (channel 2). (Please note, that the calibration signal deriving from the CD 'Svensk talaudiometri, Rev. 1' is not to be used with these files as their average sound level differs from those from the CD.) This project is a component within "Swedish speech and hearing resources" (https://osf.io/g67xh/) and is currently administrated by Erik Witte (https://osf.io/8rct4/). ---------- *Below is a list of relevant references for the Hagerman materials:* Hagerman, B. (1976). Reliability in the determination of speech discrimination. *Scandinavian Audiology, 5*(4), 219-228. [doi:10.3109/01050397609044991][1] Hagerman, B. (1979). Reliability in the determination of speech reception threshold (SRT). *Scandinavian Audiology, 8*(4), 195-202. [doi:10.3109/01050397909076321][2] Hagerman, B. (1982). Sentences for testing speech intelligibility in noise. *Scandinavian Audiology, 11*(2), 79-87. [doi:10.3109/01050398209076203][3]\ (N.B. Erratum for this publication is supplied under Files/Errata.) Hagerman, B. (1984). Clinical measurements of speech reception threshold in noise. *Scandinavian Audiology, 13*(1), 57-63. [doi:10.3109/01050398409076258][4] Hagerman, B. (1984). Some aspects of methodology in speech audiometry. *Scandinavian Audiology. Supplementum, 21*, 1-25. Hagerman, B. (1993). Efficiency of speech audiometry and other tests. *British Journal of Audiology, 27*(6), 423-425. [doi:10.3109/03005369309076719][5] Hagerman, B., & Kinnefors, C. (1995). Efficient adaptive methods for measuring speech reception threshold in quiet and in noise. *Scandinavian Audiology, 24*(1), 71-77. [doi:10.3109/01050399509042213][6] Hagerman, B. (1997). Attempts to develop an efficient speech test in fully modulated noise. *Scandinavian Audiology, 26*(2), 93-98. [doi:10.3109/01050399709074980][7] (N.B. Erratum for this publication is supplied under Files/Errata.) Hagerman, B. (2002). Speech recognition threshold in slightly and fully modulated noise for hearing-impaired subjects. *International Journal of Audiology, 41*(6), 321-329. [doi:10.3109/14992020209090406][8] Hagerman, B., & Hermansson, E. (2015). Speech Recognition in Noise in 5-Year-Old Normal-Hearing Children. *Canadian Journal of Speech-Language Pathology and Audiology, 39*(1), 52-60. Available at [https://cjslpa.ca/files/2015_CJSLPA_Vol_39/No_01/CJSLPA_Spring_2015_Vol_39_No_1_Hagerman-Hermansson.pdf][9] [1]: https://doi.org/10.3109/01050397609044991 [2]: https://doi.org/10.3109/01050397909076321 [3]: https://doi.org/10.3109/01050398209076203 [4]: https://doi.org/10.3109/01050398409076258 [5]: https://doi.org/10.3109/03005369309076719 [6]: https://doi.org/10.3109/01050399509042213 [7]: https://doi.org/10.3109/01050399709074980 [8]: https://doi.org/10.3109/14992020209090406 [9]: https://cjslpa.ca/files/2015_CJSLPA_Vol_39/No_01/CJSLPA_Spring_2015_Vol_39_No_1_Hagerman-Hermansson.pdf
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