# Sidechain Pump Generator Apply EDM-style tempo-synced pumping ducking to any audio without a kick-drum sidechain file — volume-envelope automation in the style of LFO Tool / Kickstart. > Canonical page: https://elysiatools.com/en/tools/audio-sidechain-pump-generator - **Category:** Media - **Keywords:** sidechain, pumping, ducking, edm, volume automation, lfo tool, kickstart, tempo synced, house ## Overview Classic sidechain pumping without routing a kick into a compressor: a gain envelope is synthesized directly onto the audio. Every trigger point (1/4, 1/8, 1/16, or the classic house 1/8 offbeat) starts a duck whose depth (up to −24 dB), attack (raised-cosine ramp), hold, and recovery are tempo-synced — recovery happens in the dB domain with an exponential (compressor-like), sine (LFO-style), or linear curve, and the recovery window can end early so the gain has only partly returned when the next dip lands, the signature of intense EDM pumping. The envelope is applied sample-accurately to both channels and exported in the chosen format. Typical starting points: −9 dB, 2 ms attack, 10 ms hold, 65% recovery for house offbeats; −12 dB with 100% exponential recovery for sustained pads. ## Inputs - **Audio to pump** (file) - **Tempo (BPM)** (number) - **Trigger rhythm** (select) - **Duck depth (dB)** (number) - **Dip attack (ms)** (number) - **Dip hold (ms)** (number) - **Recovery window (% of interval)** (number) - **Recovery curve** (select) - **Output format** (select) ## When to use - Pumping sustained synth pads, basslines, or chord stacks to create rhythmic breathing locked to a track tempo. - Creating classic four-on-the-floor or house offbeat ducking without setting up sidechain routing or ghost trigger tracks. - Automating gain dips on white-noise risers and background textures to add groove and syncopation. ## How it works - Upload an audio file and specify the project tempo in BPM along with the trigger rhythm division. - Customize the ducking envelope by adjusting dip depth in decibels, attack time, hold duration, and recovery window percentage. - Select an envelope recovery curve—exponential, sine, or linear—and choose the desired output audio format. - Generate and download the processed audio with sample-accurate volume automation applied across both stereo channels. ## Use cases - Electronic music producers creating bouncy four-on-the-floor bass ducking without sidechain routing. - Sound designers adding rhythmic movement and tension to static ambient pads, noise sweeps, and drone layers. - Audio engineers applying quick house-style offbeat pumping to stereo stems for remix projects. ## Frequently asked questions ### Do I need a separate kick drum track to trigger the ducking? No, the tool synthesizes tempo-synced volume automation directly from your specified BPM and rhythmic division without external trigger audio. ### What recovery curve shapes are supported? You can choose between exponential (classic compressor-style), sine (smooth LFO-style), and linear recovery curves. ### What trigger rhythm divisions are available? Trigger options include 1/4 (quarter notes), 1/8 (eighth notes), 1/16 (sixteenth notes), and 1/8 offbeat (classic house groove). ### What is the maximum gain reduction depth supported? The duck depth can be configured from 1 dB up to 24 dB of gain reduction. ### Which export formats can I download? Processed files can be exported in WAV, FLAC, MP3, M4A, or OGG Vorbis formats. ## Related tools - [Audio Ambience Loop Generator](https://elysiatools.com/en/tools/audio-ambience-loop-generator): Extract the background ambience/room tone from a fragment and generate a seamless loop of any target length. - [Audio Loop Concat](https://elysiatools.com/en/tools/audio-loop-concat): Concatenate an audio file with itself multiple times to create a loop - [Audio Spectrogram Generator](https://elysiatools.com/en/tools/audio-spectrogram-generator): Generate a spectrogram image from an audio file or a video audio track - [Audio Swing Feel Generator](https://elysiatools.com/en/tools/audio-swing-feel-generator): Apply long-short swing timing to transient-driven loops, with optional seeded humanization. - [Audio Waveform Generator](https://elysiatools.com/en/tools/audio-waveform-generator): Generate a waveform image from an audio file - [Audio Read-Along Cue Generator](https://elysiatools.com/en/tools/audio-read-along-cue-generator): Generate sentence or word-level timestamp cues from a narration audio and its script, for karaoke-style reading and language learning. - [Audio to Spectrogram Video](https://elysiatools.com/en/tools/audio-to-spectrogram-video): Create a video from audio with a spectrogram visualization - [Audio to Waveform Video](https://elysiatools.com/en/tools/audio-to-waveform-video): Create a video from audio with a waveform visualization ## Samples - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows ## Related content - [Seamless Audio Loops, Ambience, and Rhythm Beds](https://elysiatools.com/en/hubs/seamless-audio-loops-ambience-and-rhythm-beds): Find clean loop seams, generate or extend ambience, align musical timing, and finish repeatable audio beds with fades, crossfades, and tempo-synced motion.