Brimera Sound Envelope Experiment

Introduction A sound can be separated into two components; envelope and find structure. The envelope is an outline of the waveform that reflects the fluctuation of amplitude of a sound. The envelope can be thought of as the overall morphology of the sound wave given. In a sound wave, the fine structure is the sound within the envelope. The fine structure can be thought of as the more detailed variation of the sound wave because the sound itself moves at a much faster pace than the overall fluctuation of the sound envelope. For speech comprehension, the envelope of the sound is the most important component because words are identified based on the envelope of the sounds wave. However, for pitch perception and localization, the fine structure of a sound wave is the most important component because the sound of speech is heard at a location based on the sounds fine structure. Fourier’s theorem …show more content…
Data was then collected under an excel sheet, where we transferred our group results individually and also calculated the groups average. The data was entered on an excel sheet into tables and also presented as graphs. The tables represented the percentage of times the participant chose each tone to the corresponding chimera sound. The graphs were a visual representation of the information presented in the tables. There were four tables, two were for tone 2 and two were for tone 4. One table was tone 2 presented as the envelope, and the second was tone 2 presented as the fine structure. The other tables were tone 4 presented as the envelope and tone 4 presented as the fine structure. Consequently, these results varied from each participant in our group of seven members. Once we averaged the data, we had four tables that represented the average selection percentages of our group, and four graphs that expressed the visual representation of the