Sound can exist in three domains: acoustic, analog, and digital. Our ears can only hear acoustic sound. Analog signals are a representation of sound formed out of electricity. Digital audio consists of samples or measurements of an analog signal. Matt explains some of the different tools and different possible ways to work with sound in each of the acoustic, analog, and digital domains.
- Sound, or a representation of sound,…can exist in three domains.…The acoustic domain, the analog domain,…and the digital domain.…Digital audio actually involves all three…so we'll explore them all here.…As we've already seen, sound starts…as vibrating waves in a medium such as air.…This is the acoustic domain where all…sound originally comes from, unless…it's electronically generated, and it's…where all sound has to go for it to be heard.…
The acoustic domain has the advantage…that it doesn't require any kind of electronic technology.…It has the disadvantage that it's…not possible to record anything.…Sounds are heard once, and then gone forever.…For example, I can't talk into this empty bottle,…and then expect to hear my voice back…when I open it again.…The tools available to make sound…within the acoustic domain are acoustic musical instruments,…and the sounds they make depend…on their physical properties.…
For example, it's impossible to make a…high, light, delicate sound with a tuba,…or a giant powerful bass sound with a flute.…
The course starts with explanations of what sound really is and how we hear it, including discussions on frequency, amplitude, phase, and psychoacoustics. Matt explores analog audio signal path, explaining connections, gain staging, and metering. Next, he brings the audio signal into the digital domain, discussing analog to digital conversion, digital gain staging, file formats and compression, and dither.
Then the course digs into digital audio workstations (DAWs), explaining the concepts and misconceptions involved in digital recording systems. Matt describes how memory, CPU speed, and storage affect your DAW's performance, as well as how to manage computer resources and understand the plethora of file formats associated with digital recording. He follows with an overview of MIDI: how to generate, store, process, and communicate MIDI data. He wraps up with the audio processors that are often used for mixing in a DAW—including EQ, compressors, reverb, delay, and many others.
- What is sound?
- The three domains of sound: acoustic, analog, and digital
- The analog vs. digital signal paths
- Converting analog audio to digital
- Digital formats and data compression
- Understanding the five types of DAWs
- Recording performances with MIDI
- Mixing and processing audio with EQ, compression, and other effects
Skill Level Beginner
Music Production Secrets: Larry Crane on Recordingwith Larry Crane2h 21m Intermediate
Drum Setup and Mic'ing in the Studiowith Ryan Hewitt1h 14m Intermediate
1. Concepts of Sound
2. The Signal Path: Acoustic and Analog
3. The Signal Path: Digital
4. Digital Audio Workstations
6. Mixing and Processing Audio
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