Why doesn't Pikachu's voice sound like it used to?

If you listen to Pikachu’s voice in Pokemon Red and Blue, he sounds VERY different to the “pika pika” that you hear in the Pokemon anime - but why is that? And why did it take until 2013 for Game Freak to change Pikachu’s in-game voice?

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SOURCES
Pokemon Red + Green
- http://lavacutcontent.com/masuda-inte... (Sound Driver)
Pokemon TV Anime
- https://www.howtodrawmanga.com/blogs/...
- https://soranews24.com/2016/02/25/pik...
- https://bulbanews.bulbagarden.net/wik... (Running for a year and a half)
- https://dogasu.bulbagarden.net/movies...
Pokemon Yellow/Pikachu
- https://tcrf.net/Development:Pok%C3%A...
- https://web.archive.org/web/200809250...
Modern Pokemon Cries
- http://nintendoeverything.com/game-fr... (Why Pokemon don’t say their names)
- https://www.polygon.com/2013/11/14/51...

CREDITS/FOOTAGE
- Pokemon Red Game Boy Intro and Pallet... (Pokemon Red Footage)
- The First 17 Minutes of Pokemon: Let'... (Let's Go Pikachu Footage)
- Game Boy Color Longplay [090] Pokemon... (Pokemon Yellow Footage)
- Pokémon FireRed playthrough ~Longplay~ (Pokemon FireRed Footage)

- Sydney ANIMANIA 2011 【大谷 育江 ( Ikue Ot... (Ikue Ohtani fan footage)

• #gaming
• #thomas_game_docs
• #gaming
• #pikachu
• #pokemon
• #voice_acting