Measuring the amplitude of sound works differently depending on the type of meter. An analog VU meter reacts slowly due to intertia, while an LED peak meter reacts instantly. Since the VU meter shows the average amplitude of a larger window of time, short sounds register louder on a peak meter. Matt also demonstrates software simulations of the different sound level meters.
- Sound is made up of movement.…A sound wave that doesn't move, doesn't exist.…(piano note plays)…This sound constantly varies in amplitude level.…For example, at this moment, just as the note is struck,…the amplitude is at its loudest.…Over the course of the rest of the note…the overall amplitude gradually decays.…All the while…the instantaneous amplitude of the sound is cycling.…
in the way sound waves do.…At any given instant in the wave's cycle…the measurement of amplitude might be practically anything.…How do we measure the loudness of the sound…in a way that makes sense?…The answer lies in measuring…not just a single point of the wave,…but an area, a moving window over time. (piano note plays)…Let's discuss how we measure the amplitude of sound…using this brief piano recording as an example.…That first moment is an example of a transient peak.…
"Transient," meaning it comes and goes very quickly,…and "peak," meaning it's a loud spot.…We're going to use this to demonstrate…different ways of measuring loudness.…
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 Appropriate for all
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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