Cure dolly materials are good but some people has issues with the pitched up voice, so I found a way to pitch it down using a combination of virtual audio and a daw; any will work but for this guide I'll explain it using reaper and blackhole on osx, as easily available for anyone and they exist on other os as well and setup is similar for them.
Disclaimer: Reaper is not free but has a 60 day trial and you can buy it later if you desire, it will show nag screen to remind you (or use another daw, if you do I assume you know how to route audio and pitch down audio in your daw); black hole has a donation box on their site.
Requirements:
0) homebrew: follow the "install homebrew" command you find at brew.sh
- install blackhole driver Open a terminal and type each line followed by return:
brew install blackhole-2ch
sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
- Install reaper daw from reaper.fm/download.php
Now you're ready:
- Press cmd+space and type system settings, press enter
- select "Sound" on the left menu
- Under output & input select blackhole 2ch (all your system audio is redirect to blackhole this way, so you should hear silence now until next steps)
- open reaper (either via cmd+space or click on launchpad/reaper)
It will ask to configure your audio:
- Click on "Allow use of different input and output device" -at the top you' ve input device, from the dropdown option select "blackhole 2c" -On output select "macbook pro speaker" or your usual device on your mac -press ok.
Now you're seeing a very empty reaper, right click on the left side area below the icons and insert new track.
Click on the red circle, this allow now to hear sounds again.
Click on the fx button, search for "pitch", from the fx listed select "VST: ReaPitch" with a double click, now here the first horizontal slider say shift(full range) just click on the right side of the slider in the textbox that has "semitones" next to it and write -6
Now if you start a cure dolly video, it will be pitched down, and it should solve the issue some people have with it.
You can add some more filters to make it better, or use a different value for pitchx but I think this is already enough for most people.
When you finish just remember to go to system settings/sound and restore your output to your speaker (of course if you're using headphones select headphones)
That's it, I hope the people that couldn't follow now can with this trick.
Happy learning!