Generational differences in the low tones of Black Lahu

We investigate apparent-time tone variation in the Black Lahu language (Loloish/Ngwi, Tibeto-Burman) of Yunnan, China. These are the supplementary materials for the paper "Generational differences in the low tones of Black Lahu," accepted for publication in <em>Linguistics Vanguard</em>. <strong>Appendices: </strong> <strong>Appendix A: </strong>Wordlist (organized by order of appearance in the story) <strong>Appendix B: </strong>Wordless picture book <strong>Appendix C: </strong>Cross-tabulation tables <strong>Appendix D: </strong>F0 trajectory plots by speaker <strong>Appendix E: </strong>LME model results for T45 <strong>Script files contained in the analysis: </strong> <strong>F0_estimation.praat</strong> is the Praat script used for F0 estimation on the wav + Textgrid pairs <strong>Combine_Speaker_Files.R</strong> is used to combine the Praat script output for individual speakers into a single csv file. <strong>Data_processing.R</strong> is the main processing script, works on an Excel csv file that contains the output of the Combine_Speaker_Files.R script <strong>Plotting_Fig1_Lahu_tones.R </strong>plots the F0 trajectories of all the tones of Lahu, averaged across all the speakers, works on an Excel csv file that contains the output of the F0 estimation.praat script. <strong>Plotting_Fig2_age_groups.R</strong> plots the F0 trajectories of T2 and T7, in 15-age groups, works on an Excel csv file that contains the output of the Data_processing.R script. <strong>Plotting_Fig3and6_carryover. R</strong> plots the F0 trajectories of T2, T7 and T4 when they occur after silence or Tones 1-7 in three age groups; works on an Excel csv file that contains the output of the Data_processing.R script. <strong>Plotting_Fig4578_scatterplot.R </strong>plots the scatterplots of F0 onset versus Age, works on an Excel csv file that contains the output of the Data_processing.R script. <strong>Data files contained in this analysis: </strong> <strong>praat_raw_data.csv</strong> is the output of the F0_estimation.praat script. Contains the raw data from all speakers. <strong>Speaker_info.csv</strong> is the demographic data for each speaker <strong>data_forplotting.csv</strong> is the output of the Data_processing.R script. Contains the filtered tokens, normalized for length and converted to speaker-specific semitones. Used to plot Figure 2, Figure 3 and Figure 6 <strong>data_forRbrul.csv</strong> is the output of the Data_processing.R script, the F0 onset and F0 offset for Tones 2, 4, and 7. Used to do linear mixed effects modeling in the Rbrul interface (Johnson 2009).