Fabfilter Pro-Q 3: Creating a filtered delay effect

Demo summary
Matty uses steep low and high-cut filters in Pro-Q3 to isolate a specific frequency range for a parallel slap delay effect on a vocal track.
Step-by-step
- Duplicate the vocal track to create a parallel processing chain
- Apply a steep low-cut filter to the duplicated track
- Apply a steep high-cut filter to isolate a narrow frequency range
- Add a delay effect after the EQ
- Set the delay times (e.g., 70ms on one side and 190ms on the other)
- Adjust the feedback level to taste
Options
- Use the built-in EQ within the delay plugin instead of a separate Pro-Q 3 instance
- Select and drag multiple filter points simultaneously to shift the frequency window
Tips
- Use steep filter slopes to ensure only a small portion of the frequency spectrum is sent to the effects
- Drag the filter points manually in the interface for a faster workflow than adjusting knobs
Highlights
“sometimes I just find it easier to just drag these this way and it's just makes it faster”
All demos from “Mastering FabFilter Pro-Q3: Top 5 Techniques for Pro-Level Mixing”
0:161:10Notching out frequencies with FabFilter Pro-Q3Matty demonstrates how to identify and remove 'muddy' frequencies around 500Hz in a vocal track using the notch filter and solo audition mode in Pro-Q3.Fabfilter Pro-Q 3· AI Audio Editor
1:382:38Dynamic scrubbing and multi-band dynamic EQThe creator shows how to use the frequency spectrum to identify peaks, drag down multiple bands, and convert them into dynamic EQ nodes to clean up a vocal without losing its life.Fabfilter Pro-Q 3· AI Audio Enhancer & Noise Reduction
4:570:53Creating a filtered delay effectCurrentMatty uses steep low and high-cut filters in Pro-Q3 to isolate a specific frequency range for a parallel slap delay effect on a vocal track.Fabfilter Pro-Q 3· AI Audio Editor
7:100:48Broad stroke EQ for mix presenceThe demo shows using a wide Q setting to boost the brightness of a sample in real-time, helping it cut through a dense mix.Fabfilter Pro-Q 3· AI Audio Editor
8:322:14Mid-side EQ for width and low-end controlMatty demonstrates how to use Pro-Q3's mid-side mode to remove low-end from the stereo sides of a bass and how to add width to a master by boosting the high-shelf on the side channel.Fabfilter Pro-Q 3· AI Audio Editor- Watch “Mastering FabFilter Pro-Q3: Top 5 Techniques for Pro-Level Mixing” →
AI Audio Editor
3:361:26Adjusting Dynamics and Gain ParametersThe narrator demonstrates adjusting threshold, ratio, and gain structure across Pro-DS, Pro-G, and Pro-C 2 instances directly from the list view.FabFilter
5:231:08EQ Polarity and Output BoostThe demonstration shows toggling auto gain, inverting polarity, and using the temporary 6dB output boost button to check channel clarity.FabFilter
6:311:12Editing EQ Nodes and BandsThe narrator shows how to drag EQ nodes, adjust Q values, change filter types, and solo specific bands within the Pro-Q 4 instance view.FabFilter
14:170:59Frequency Collision DetectionThe demo shows setting a bass guitar as a collision reference to identify and fix frequency masking in rhythm guitars using a high-pass filter.FabFilter
2:160:55Applying Spectral EQ with FabFilter Pro-Q 4The presenter demonstrates how to use the new spectral mode in Pro-Q 4 to lift the vocal presence while simultaneously taming harsh frequencies, similar to the functionality of Soothe.Streaky
3:111:21Dynamic EQ and Mid-Side processing in Pro-Q 4The user performs a side-channel cut to mono the bass and applies a dynamic EQ boost to the kick drum so it only triggers when the kick hits.Streaky
5:560:25Taming low-mids with Spectral EQThe user demonstrates applying spectral EQ around 300Hz to manage low-mid resonance and improve the feel of the track.Streaky
2:581:04Testing phase modes in Pro-Q 4The user switches between Zero Latency, Natural Phase, and Linear Phase modes in both FabFilter plugins while phase-inverted to see if any residue appears during playback.MixbusTv
4:162:03Comparing shelf and notch filters in Pro-Q 3 and 4The demonstration continues by applying low shelves at 120Hz, bell filters, and high-frequency notches to both plugins to verify they still null perfectly under different filter types.MixbusTv
0:161:10Notching out frequencies with FabFilter Pro-Q3Matty demonstrates how to identify and remove 'muddy' frequencies around 500Hz in a vocal track using the notch filter and solo audition mode in Pro-Q3.Matty Harris | MixAndMasterMySong
4:570:53Creating a filtered delay effectCurrentMatty uses steep low and high-cut filters in Pro-Q3 to isolate a specific frequency range for a parallel slap delay effect on a vocal track.Matty Harris | MixAndMasterMySong
7:100:48Broad stroke EQ for mix presenceThe demo shows using a wide Q setting to boost the brightness of a sample in real-time, helping it cut through a dense mix.Matty Harris | MixAndMasterMySong