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Mute 4D applies a trace-by-trace mute to a seismic gather using a mute curve that is picked interactively on the displayed data. The mute can be applied upward (zeroing samples above the pick time — a top mute to suppress early arrivals such as direct waves and refractions) or downward (zeroing samples below the pick time — a tail mute to suppress recording noise or far-field wrap-around). A linear taper is applied over a user-defined window on both sides of the mute boundary to avoid sharp amplitude discontinuities at the mute onset.
The mute curve is defined using a 4D picking collection, which associates a pick time with each trace based on its source-receiver geometry. The module provides interactive display views showing the input gather, the current mute curve overlaid on the gather, and a map of the picked points. The mute picking can be saved to disk and reloaded in subsequent sessions so that consistent mute geometries can be applied across a survey.
Note: This module is deprecated and is retained for legacy workflow compatibility only. For new projects, use the current Mute workflow.
The primary data connection carrying the seismic dataset to be muted. This item transports the SEG-Y file handle, trace headers, and geometry objects that are passed through unchanged to the output alongside the muted gather data.
The seismic gather to which the mute will be applied. Each trace in the gather is processed using the mute time interpolated from the picking collection for that trace's source-receiver geometry. The gather is displayed in the interactive view, where the mute curve is overlaid and the picking interaction takes place. When the gather is updated (for example, when stepping through successive gathers in a flow), the display refreshes automatically.
A read-only field that displays the file path of the mute picking currently loaded for this module. This path is updated when you use the Load picking or Save picking custom actions. It is empty when no picking has been saved or loaded.
The internal 4D picking collection that stores the mute times for all traces. This item is created automatically when the first gather becomes available and is populated as you pick mute points interactively. It is also updated when a picking file is loaded using the Load picking action. This item persists within the module as long as the flow is not re-initialised.
Selects the direction of the mute. Default: Mute up.
Mute up — zeroes all samples above the picked mute time (early-time mute). Use this to suppress direct waves, refractions, ground roll, or other early arrivals that appear before the reflection zone of interest. A linear ramp-on is applied from the mute time upward over the Taper window.
Mute down — zeroes all samples below the picked mute time (tail mute). Use this to suppress late-arriving noise, wrap-around reflections, or to limit the processed time window to a zone of interest. A linear ramp-off is applied from the mute time downward over the Taper window.
The length of the linear amplitude taper (in seconds) applied at the mute boundary. Default: 0 s. When set to 0, a hard mute with no taper is applied. When set to a positive value, a linear ramp is applied over this time interval across the mute boundary, transitioning smoothly from zero amplitude to full amplitude. This ramp reduces the sharp amplitude step that would otherwise cause spectral leakage and ringing in subsequent frequency-domain processes. A typical taper length is 20–50 ms; use longer tapers when the data has low dominant frequencies.
The spatial search radius (in meters) used to identify and snap to nearby pick points during interactive picking. Default: 5000 m. When you click on the gather display to place or move a mute pick, the module finds the nearest existing pick within this radius and snaps to it for editing. Increase this value if existing picks are not being selected during interactive editing; decrease it if unintended distant picks are being selected instead of nearby ones.
Removes all currently stored mute picks for this module, resetting the picking collection to an empty state. A confirmation dialog is displayed before clearing. Use this action when you want to restart the picking from scratch, for example after changing the gather sorting or the mute type. This action cannot be undone.
Opens a file browser to select a previously saved mute picking file and loads it into the module. The loaded picks replace any picks currently stored in the module. Use this action to re-apply a mute defined in a previous session or to share a common mute definition across multiple datasets.
Opens a file browser to specify a file path and saves the current mute picking collection to disk. The picking file can be reloaded in a later session using the Load picking action. Save the picking after completing interactive mute editing to preserve the result for future use or for application to additional datasets.