Final answer:
In recording techniques/effects, "wah wah" refers to a popular guitar effect known as a wah-wah pedal. The wah-wah pedal is used to manipulate the tone of an electric guitar, creating a distinctive sound often associated with funk or rock music.
Step-by-step explanation:
In recording techniques/effects, "wah wah" refers to a popular guitar effect known as a wah-wah pedal. The wah-wah pedal is used to manipulate the tone of an electric guitar, creating a distinctive sound often associated with funk or rock music. The effect is achieved by sweeping a bandpass filter up and down the guitar's frequency spectrum, creating a modulation effect similar to a human voice saying "wah wah".