Build with Audio EQ.
Equalize a voice clip: a presence bell (cut harshness in the 2-5 kHz band), a de-esser (tames sibilance around 6-8 kHz, only while it is loud), and a low shelf (body).
Best for
Equalize a voice clip: a presence bell (cut harshness in the 2-5 kHz band), a de-esser (tames sibilance around 6-8 kHz, only while it is loud), and a low shelf (body). Use the playground to set up a single step, then open a workflow when you want to connect more tools.
Inputs explained
- Audio (required)
- Set the audio used by this model. Type: audio.
- Preset (optional)
- Set the preset used by this model. Type: text. Options: voice_deharsh, none. Default: "voice_deharsh".
- Presence gain (dB, -12 to 6; blank = preset) (optional)
- Set the presence gain (db, -12 to 6; blank = preset) used by this model. Type: number.
- Presence frequency (Hz, 1000 to 8000) (optional)
- Set the presence frequency (hz, 1000 to 8000) used by this model. Type: number.
- Presence Q (0.3 to 4; lower = wider) (optional)
- Set the presence q (0.3 to 4; lower = wider) used by this model. Type: number.
- De-ess amount (0 to 1; 0 = off) (optional)
- Set the de-ess amount (0 to 1; 0 = off) used by this model. Type: number.
- De-ess frequency (Hz, 4000 to 10000) (optional)
- Set the de-ess frequency (hz, 4000 to 10000) used by this model. Type: number.
- Low shelf gain (dB, -6 to 6) (optional)
- Set the low shelf gain (db, -6 to 6) used by this model. Type: number.
- Low shelf frequency (Hz, 50 to 400) (optional)
- Set the low shelf frequency (hz, 50 to 400) used by this model. Type: number.
- Format (optional)
- Set the format used by this model. Type: text. Options: mp3, wav. Default: "mp3".
Tips before you run
Start with the default settings and change one input at a time. Keep the result you like on your board so the next step can use it.
If you add a reference file, use a link the workflow can read. Check the inputs and credit estimate on the board before starting a run.
Working with this model
What it is for
TTS voice clones (Fish, ElevenLabs) often come out harsh: the 2-5 kHz band sits 7 to 10 dB under the low end, where a natural voice sits about 15 dB under, and the S sounds spit. Wire the voice into Audio EQ and the default preset fixes both without a trip to an audio editor.
The voice_deharsh preset
- Presence: -3.5 dB, a wide bell (Q 0.7) centred at 3.5 kHz.
- De-ess: a dynamic cut around 7 kHz that only engages while that band is loud, so it takes the edge off sibilants and leaves everything else alone.
- Low shelf: +1.5 dB at 150 Hz, a little body back.
Measured on real Fish clones, the preset moves the 2-5 kHz band 3 to 3.5 dB further under the low end and trims the 6-8 kHz sibilance band by 2 to 3 dB. Want more? Set Presence gain to -6.
Settings
Every dial starts blank, which means "use the preset's value". Set one and it overrides that value only. Pick the none preset to start from flat.
- Presence gain (dB, -12 to 6) and frequency (1000 to 8000 Hz), Q (0.3 to 4, lower is wider). Gain 0 (anything under 0.05 dB) turns the band off.
- De-ess amount (0 to 1; under 0.01 is off) and frequency (4000 to 10000 Hz).
- Low shelf gain (dB, -6 to 6) and frequency (50 to 400 Hz).
- Format: mp3 (default) or wav. Sample rate and channels are kept.
Every band off is refused rather than handing back a transcode. Out-of-range values are refused with the number, never clamped.
Headroom
When bands boost, the whole clip is first turned down by the SUM of the boosts, so a voice already normalized near full scale does not clip. The sum, because two boosts that overlap (a +6 shelf and a wide +6 bell) add up past either one. The preset boosts 1.5 dB, so its output is about 1.5 dB quieter at peak. Put Audio Master (or your loudness step) after it if the level matters.
Free, and why
Free set, no Run button, refreshes when anything downstream runs. The output is content-addressed by the input url and the settings, so an unchanged re-run reuses the last file.
Common questions
How do I use Audio EQ on Wireflow?
Set the inputs above and choose Open in a workflow. Sign in to save your board, then check its credit estimate before you run.
Can I use Audio EQ through an API?
Yes. Save a workflow with this model, then call the Wireflow run API with its workflow ID. The API tab has examples you can copy.
What changes the credit price?
The price shown uses the model defaults. Your inputs and model settings can change the total. The workflow shows an estimate before you run.
Can I connect this to another model?
Yes. Open it in a workflow and connect its output to another node with a matching input type.