5. Even notes and noises
Which problems in a bass take have to be fixed by playing (fret buzz, sympathetic string noise, hum) and which ones are fixed for free later.
You already have a locked take with a tone. Before moving to the mix it’s worth listening to it carefully once, looking specifically for two things: notes that don’t come out at the same volume, and noises that will get expensive later. The goal isn’t chasing perfection: it’s separating what has to be re-recorded from what gets fixed for free down the line.
What IS worth fixing by playing
Fret buzz
That metallic “brrr” when the string slaps the frets. It sits in the upper-mid range, exactly where you’ll later put the bass growl, and it gets amplified by saturation: a take with fret buzz sounds worse the more you process it. Typical cause: hitting too hard, or the action being too low. Fix: ease off the attack or raise the action a bit, and re-record the passage.
Strings ringing on their own
When you play the A string, the others vibrate sympathetically and add notes you didn’t want. On bass this blurs everything because they’re low frequencies. Fix: mute with your right-hand thumb the lower strings you aren’t using, and rest your spare left-hand fingers on the ones left free. A gate won’t fix it: a gate cuts silences, not notes that are ringing.
Electrical hum
A constant 50/60 Hz buzz and its harmonics, typical of passive single-coil basses. It lives right in the bass register, so it can’t be filtered out without damaging the instrument. Fix at the source: move away from the screen and from power supplies, rotate the body of the bass until the hum drops (it’s directional), check the cable. Thirty seconds of testing saves you from a track with hum forever.
Fret buzz, sympathetic ringing and hum live in the same frequencies as the instrument, so they can't be separated later with EQ. They're the only problems in a bass take that genuinely justify recording again.
What is NOT worth re-recording
Levelling without crushing: try the compression
For uneven notes, the mixing tool is compression. It’s worth hearing now how much it levels and what it costs in punch, because that tells you how much care the attack deserves while you record. Pick the bass source in the player, lower the threshold and watch the gain reduction meter: notice how the notes even out and how, past a certain point, the attack of each note gets flattened.
Playground · Compressor
- •▶ Play — plays the audio in a loop.
- •No compression / With compression — switch between the sound with and without compression to compare, at the same volume. The segment with the lit border is the one you're hearing (“A/B” comparison).
🎧 Audio to processChoose which sound goes through the effect:
See how the output line (orange) stays more even than the input line (gray): the compressor brings loud and soft closer together. The more you compress, the flatter it gets.
The compressor evens out the volume (it lowers the loudest parts). Move each control and watch the GR bar above:
A recipe to hear it clearly: source 🎸 Bass, ratio 4:1, and lower the threshold until you see 3–6 dB on the GR bar. Turning the compression on and off you'll notice the bass gets more even and “glued”.
One pass when you’re done: listen to the whole take, once
- Listen without plugins, just the DI, paying attention to fret buzz and ringing.
- Listen with the song to see if anything jumps out or disappears.
- Note down the bars with real problems instead of stopping to fix each one. Then re-record only those passages in a single pass.
Quick route — reviewing the take
Quick path
- Listen to the DI alone, looking for fret buzz, ringing and hum.
- Note down the bars with real problems in the instrument's own frequencies.
- Re-record only those passages (punch in), not the whole take.
- Uneven notes: leave them for clip gain or compression in the mix.
- Noise between phrases: leave it, it's a two-minute fix later.
Expected result
Expected result
A take with no unfixable problems: no fret buzz creeping into the mids, no strings ringing extra, no electrical hum. It may have notes with uneven volume and some finger noise — that gets solved for free in the mix. Last step of recording: aligning and handing over a clean track to the mix.