Made some fun monster sounds this week on the School of Video Game Audio's Wwise course. I had to design and implement the sound for the enemy Evil Spit Plant in the Wwise Adventure game.
Sound Design
I approached my design for the enemy plant death sound by first recording gameplay footage of the plant death animation. After watching this animation numerous times, I decided to break the plant death sound down into four constituent parts that matched the character's death animation. These parts were screams, gurgles, rustles and impacts;
Screams
For the scream sounds, I used samples from the Monster Within sound pack by Soundmorph. I wanted to get a short, punchy pain sound that would immediately indicate to the player that they had successfully killed the spit plant. I found a collection of small monster shrieks in this pack that fit my needs perfectly.
Gurgles
Directly following the scream, I wanted a longer, drawn-out death gurgle to go with the enemy plant's writhing death animation, to suggest that it's still in considerable pain as it thrashes around in its death throes. I recorded these sounds myself by making some croaky, gurgling noises in my throat - disgusting, I know, but hey, they sounded pretty good and that's what matters!
Recording comedic death gurgles in the VO booth at Futureworks. The dark environment really helped me get into character!
Having recorded my gurgles at 192kHz, I had considerable flexibility with regard to pitch shifting at the edit stage. I processed the gurgles by pitching them +1 semitone up and applying a generous amount of distortion before then running them through Krotos Audio's Simple Monsters plug-in. This made the gurgle sounds I recorded feel considerably more alien, gross and wet sounding.
Rustles
As the Evil Spit Plant is an organic creature, I wanted to include some natural, organic sounds in with the highly-processed and alien-sounding vocal layers to balance them out. The plant's death animation involves a lot of shaking and writhing around, so I thought including a rustling grassy layer to the death sound would help make the enemy feel more believable and grounded in the reality of the game world. I used some grass rustle samples from the Sonniss Game Audio GDC 2018 bundle as the sounds for this layer.
Impacts
Finally, the impact layer was to act as the sound for plant's body hitting the ground as it dies. I used some recordings I had made during a recent trip to a nature reserve of hitting grass and other bits of foliage with my hands (yep, it looked really stupid but once again it sounded pretty good) as the sounds for this layer.
Wwise Implementation
The screams, gurgles, rustles and impacts were then imported into Wwise as separate layers, with each layer having its own dedicated random container. These random containers were then inserted into the Event_EvilSpitPlant_Death event as separate play actions.
The Enemy_EvilSpitPlant_Death event in my Wwise session. Each layer of the sound has its own random container, with voice volume and pitch offset randomisation applied. Independent delay settings on the play actions were set so as to give the collective death sound a nice unified rhythm.
With all the sounds integrated into Wwise at this point, I then applied a flanger effect to the scream and gurgle layers via the sound's Enemy_EvilSpitPlant actor mixer to accentuate the creepy, poison-filled nature of the creature even more.
I didn't want the flanger effect applied to the organic rustle and impact sounds, so I bypassed the effect on these layers. So, without further ado, here's the final Evil Spit Plant Death sound - voilà!
