I am not entirely pleased with the results, but it is better than the “noisy” original. I lastly uploaded it to my “ Fuel for Educational Change Agents” podcast channel which is running free/open source Podcast Generator software. I saved the edited file in WAV format, normalized it using free Levellator software, and then converted it to a 32 kbps mp3 file using Switch software. Then I chose “Apply Spectral Subtraction” from the EFFECTS – NOISE REDUCTION menus. After opening the raw mp3 audio file in WavePad I selected a small portion of the recording (about 2 seconds) in which no one talked and ONLY the fan noise was audible. This evening I used the free/home version of WavePad software to “Apply Spectral Subtraction.” This was a two part process. Unfortunately there was a loud heater fan running in the classroom where Amy shared the presentation, which is pretty distracting in the “raw” recording. I took notes and shared links during her presentation, and also recorded the presentation with permission using my iPhone and the free iOS app/service Cinch. Yesterday I heard a fantastic presentation in Yarmouth, Maine, by teacher Amy Sanders about her Arab Spring Project.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |