Electronic Circuits for Music
Discover the circuits behind electric guitars, synthesizers, and effects pedals. Learn how resistors, capacitors, and transistors shape tone, create distortion, and generate new sounds. Gain the practical confidence to modify, troubleshoot, and build your own audio gear.
Like Duolingo, but for Electronic Circuits for Music. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
22 levels across 3 sections, about 44 minutes end to end, roughly 9 days at five minutes a day. It moves through Turning Electricity into Musical Tone; Amplifiers, Distortion, and Synthesizers; and The Real-World Rig: Clean Power and Connections. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Electronic Circuits for Music
- A guitar cable carries an electrical signal representing sound, not physical air vibrations or digital code
- Sound in an electric instrument is converted into a voltage that rapidly wobbles up and down
- The frequency of the electrical wobble matches the pitch of the plucked note
- Batteries and power supplies provide steady direct current (DC) to power the amplifier's components
- Audio signals must alternate back and forth (AC) to push and pull a speaker
- The small fluctuating audio signal rides through the circuit while powered by the steady DC source
- Fluctuating voltage flows through a coil of wire
- The coil turns into an electromagnet whose magnetic pull reverses with the signal
- The coil attracts and repels a permanent magnet, moving an attached cone
- The vibrating cone pushes the surrounding air to create audible sound waves
- Voltage swing (amplitude) determines how hard the electromagnet pushes the speaker cone
- Larger voltage swings push the speaker cone further forward and backward
- Greater physical cone travel pushes more air, creating a louder sound
- A volume knob (potentiometer) is a variable voltage divider with a sliding contact
- Turning the knob changes the resistance ratio to siphon off more or less signal to ground
- Zero volume means the entire voltage signal has been diverted away from the amplifier output
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Electronic Circuits for Music the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
When you plug an electric guitar into an amp, what actually travels down the black cable?
Get it right to open this lesson and 21 more in the app.
Where Electronic Circuits for Music takes you
- 1
Turning Electricity into Musical Tone
- The Audio Signal: Electricity You Can Hear
- Passive Tone Controls: Filtering Highs and Lows
- 2
Amplifiers, Distortion, and Synthesizers
- Active Amplification: From Weak Pickups to Line Level
- The Science of Distortion: Clipping, Fuzz, and Overdrive
- Making Sound from Scratch: Electronic Oscillators
- 3
The Real-World Rig: Clean Power and Connections
- Hum, Grounding, and Power Supplies
- Interfacing and Impedance: Making Gear Play Nice
3 sections · 7 units · 22 levels. Built to play, not to enroll.
Tomo is in ChatGPT
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Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Electronic Circuits for Music is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Electronic Circuits for Music today.
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