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rtac [2018/01/18 19:02]
sam [Activity 1]
rtac [2018/07/17 15:13] (current)
sam
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 ====== Radio Tacoma Audacity Classes ====== ====== Radio Tacoma Audacity Classes ======
  
 +Here is a series of files and a description of the Radio Tacoma Audacity class. ​  All tools you need to work with Audacity in the classroom are available here, so it might be a good idea to have this open in a browser window while you work.
  
-===== 1/18/2018 -- Day 1 ===== 
  
 +====== Important Links ======
  
-==== Topics Covered ​====+  * {{ ::​glossary_of_terms.pdf |Glossary of Terms and Shortcut Sheet}} 
 +  * [[https://​vis.nu/​teaching/​screen/#​1936277165476784|Watch Sam's Screen]] 
 +  * [[https://​vis.nu/​teaching/​upload|Upload Work Here]] 
 + 
 +==== Installing Audacity ==== 
 + 
 +Download and install in this order. 
 + 
 +**Windows** 
 +  - https://​vis.nu/​teaching/​audacity/​win/​Lame_v3.99.3_for_Windows.exe 
 +  - https://​vis.nu/​teaching/​audacity/​win/​ffmpeg-win-2.2.2.exe 
 +  - https://​vis.nu/​teaching/​audacity/​win/​audacity-win-2.2.2.exe 
 +**Mac** 
 +  - https://​vis.nu/​teaching/​audacity/​mac/​audacity-macos-2.2.2.dmg 
 +  - https://​vis.nu/​teaching/​audacity/​mac/​ffmpeg-mac-2.2.2.dmg 
 +  - https://​vis.nu/​teaching/​audacity/​mac/​Lame_Library_v3.99.5_for_Audacity_on_macOS.dmg 
 + 
 +====== Saturday, July 14 ====== 
 + 
 +===== Part 1 =====
   - Installation ​ (Windows and Mac, I'm Assuming)   - Installation ​ (Windows and Mac, I'm Assuming)
   - Introduction to UI   - Introduction to UI
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     - Saving and Basic Encoding     - Saving and Basic Encoding
  
-==== Activity ​1 ====+==== Assignment ​==== 
 + 
 +**Edit This File:** [[https://​vis.nu/​teaching/​assignments/​Editing_Lesson.flac|Editing_Lesson.flac]] 
 + 
 +Open the file Editing_Lesson.flac and edit for content. This is a brief interview between Sam, Becky, and Carol, where they are supposed to be discussing the podcasting miniterm class that happened at SAMI last January. Remove ums, ahs, awkward pauses, tangents, or anything else you feel that is unneccesary or uninteresting. Rearrange segments of dialogue if you want to. Your final product should be no longer than 5 minutes. ​  ​Export as MP3 and upload for review. 
 + 
 +===== Part 2 ===== 
 + 
 +  - UI Continued 
 +    - Working with Multiple Tracks 
 +      - Discussion of Multitrack vs. Single Track Recording 
 +  - Levels, and Decibels, Etc. 
 +    - Explanation of dBFS  
 +    - Amplification 
 +      - The Concept of Headroom (...and why there was no headroom in the thing you edited yesterday) 
 +    - Normalization 
 +    - Compression 
 + 
 +==== Assignment 2 ==== 
 + 
 +**Edit This File:** [[https://​vis.nu/​teaching/​assignments/​OW_MY_FACE.flac|OW_MY_FACE.flac]] 
 + 
 +Open the file OW_MY_FACE.flac and process for sound. Use the split tool, Normalize, and Compress to minimize the dynamic range. If you are successful, the waveform will look much more consistent throughout the whole recording. ​ Export as MP3 and upload for review. 
 + 
 +====== Saturday, July 21st ====== 
 + 
 +===== Part 3 ===== 
 +  - UI Continued Pt. 3 
 +    - Panning 
 +    - Mute and Solo 
 +    - Sync-Lock 
 +  - Discussion of Effects 
 +    - De-essing 
 +    - Noise Gating 
 +    - Importing Audio 
 +  - Rendering and Mixdown 
 +  - Lossy vs. Lossless reexplained 
 +  - Metadata 
 +  - Podcasting 
 +    - Websites 
 +    - RSS Feed 
 +    - Aggregators 
 +  - Broadcasting 
 +    - FCC-safe Language 
 +    - Dead air is bad 
 +    - Fixed time 
 +    - Maybe a bit on the compression wars 
 + 
 +==== Assignment 3: FINAL EXAM ==== 
 + 
 +**Edit This File:** [[https://​vis.nu/​teaching/​assignments/​Processing_Lesson.flac|Processing_Lesson.flac]] 
 +Open the file Editing_Lesson.flac and process completely for release. You should complete the following steps, but they don’t need to happen ENTIRELY in this order. 
 +  - Process for sound: Use Amplify, Compress, and Normalize to minimize the dynamic range of the recording. 
 +  - Intro and Outro music: Use the envelope tool to provide a smooth transition between music and the interview. 
 +  - Edit for content: This is mostly a repeat of lesson one but because you will be editing from tracks, this time you will also have the opportunity to eliminate taps and dings. You should also be aware that there is profanity in this track that must be bleeped or eliminated for broadcast. 
 +  - Process for export: Use Mix & Render, Edit Metadata, and Export to produce a FLAC file and an mp3 of your recording. ​  ​Upload for review. 
 +  
 + 
 +===== Part 4: Extra Innings ===== 
 +  - Equalization 
 +  - Noise Reduction 
 +  - Fun Stuff?! 
 + 
 +==== Assignment 4: "EXTRA CREDIT"​ ==== 
 + 
 +**Edit This File:** [[https://​vis.nu/​teaching/​assignments/​Noisy_Interview.flac|Noisy_Interview.flac]] 
 + 
 + 
 +Open Noisy_Interview.flac and process for sound. Play with the Noise Reduction and Equalization tools to improve the overall sound quality of this recording. There is no specific best process for this—you will be successful if you feel more familiar with the tools that are available to you to solve these specific sound problems. 
 + 
 + 
 +===== Examples of Audio Problems ===== 
 + 
 +==== Lossy vs. Lossless Encoding ==== 
 + 
 +Lossy encoding methods such as MP3 will throw out some data in order to get a smaller file size.   ​Lossless methods such as FLAC do not throw out quite so much information. ​  For archiving, FLAC is better than MP3 because repeated encoding will cause //​artifacts//,​ which are noises we don't want. 
 + 
 +**MP3 Files:** 
 + 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_MP3_Generation000.mp3|MP3 After Initial Save]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_MP3_Generation010.mp3|MP3 After 10 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_MP3_Generation020.mp3|MP3 After 20 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_MP3_Generation050.mp3|MP3 After 50 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_MP3_Generation100.mp3|MP3 After 100 Saves]] 
 + 
 +**FLAC Files:** 
 + 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_FLAC_Generation000.flac|MP3 After Initial Save]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_FLAC_Generation010.flac|MP3 After 10 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_FLAC_Generation020.flac|MP3 After 20 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_FLAC_Generation050.flac|MP3 After 50 Saves]] 
 +  - [[https://​vis.nu/​teaching/​lvl/​LVL_FLAC_Generation100.flac|MP3 After 100 Saves]] 
 + 
 +==== Example of Audio File with DC Offset ​====
  
-[[https://​vis.nu/​_media/carol_fisher_interview_raw.mp3|Download File]]+[[https://​vis.nu/​teaching/EAS_with_DC_Offset.flac]]
  
-Download this file, open in Audacity. ​  This is a discussion between two teachers at the Science and Math Institute in and around Point Defiance zoo.   ​It ​is straight ​from the studio.   Your task is to edit this file into something that could be put on the air.+This is recorded from Radio Tacoma'​s EAS((**E**mergency **A**lert **S**ystem-- ​the thing that replaced the emergency broadcast system.)).   ​It ​uses a radio that does not filter out DC bias from the audio.   The bias appears as an offset from the waveform'​s centerline and the 0 point in the audio channel. ​ Normalizing ​to remove the DC offset fixes this.