Sign up here to see exclusive videos and download practice sessions producelikeapro.com In Lesson 1 of the "How to Record" series, Warren discusses the basics of sound. Touching on topics such as frequency, timbre, polarity, phase relationship, listening volume (SPL), equal loudness, and recording levels. Produce Like A Pro is a website which features great tips to help the beginning recordist make incredible sounding home recordings on a budget.