Sound Editor & Designer

DongHyeon Koo

Detailed editorial.
Global delivery experience.

I’m DongHyeon Koo, a sound editor and designer running Earlynight Sound. My work spans feature films, series, animation, independent and short films, and theme parks.

From the sounds a scene needs to M&E, technical QC and Dolby Atmos delivery, I bring experience of both creative production and final delivery to each project.

Experience

Experience.

Company, role, and selected work.

Independent practice

Earlynight Sound

Sound Editor & Designer

Independent sound practice covering editorial and design, M&E, QC and delivery, and re-recording mixing.

Selected independent contributions by DongHyeon Koo, including work through sound post-production partners.

The Bridge at Remagen — M&E project
Once Upon a Time in a Horror Movie — Ambience & Foley
EMPTY — Supervising Sound Design & Sound Design
Lonesome Are the Wicked — Sound Editorial · In progress
Search Party — M&E Creation · QC-Fix

View work

Previous affiliation

Netflix

Sound Services Operator

QC, fixes and delivery within the Post Services Sound team. Global collaboration and hands-on experience of technical correction and delivery standards.

KPop Demon Hunters — Dolby Atmos QC-Fix

View contribution

Previous affiliation

Moby Sound

Sound Designer / Editor

Sound editorial and design for film and series, with ADR and mixing responsibilities.

Gyeongseong Creature — Editorial & Dolby Atmos Sound Design

View contribution

Previous affiliation

Livetone

Sound Editor

Effects and Foley editorial, mixing assistance and technical support, and PM and M&E delivery.

Parasite — Sound Editorial
Squid Game — Technical Assistance & Delivery

View contribution

Specialties

A closer look at the work.

Practical skills across sound editorial, creative design and technical delivery.

Sound Editing & Design

Edit and design effects and ambience, and refine Foley to picture. Build the sound of a scene through timing, texture and detail, from subtle environments to creatures and action.

Effects · Ambience · Foley Editorial

M&E

Create and complete Music & Effects tracks for international versions and dubbing. Restore missing effects and ambience, maintaining the continuity of the soundtrack across scenes.

International Versions · Effects & Ambience Completion

Technical QC & Fix

Review audio for technical issues and perform fixes ahead of delivery, including Dolby Atmos material. Apply practical QC experience to identify problems and check the corrected audio.

Technical Review · Fixes · Re-check

Dolby Atmos Delivery

Prepare and check Dolby Atmos deliverables against the project’s delivery requirements. Bring experience in global sound delivery to the final review and handoff.

Delivery Requirements · Final Review · Handoff

Re-recording Mixing

Shape the balance, dynamics and space of dialogue, music and effects to support the scene. Define the mix scope around the project’s format and delivery needs.

Dialogue · Music · Effects

Dialogue Editing & Cleanup

Edit dialogue for continuity and clarity, and reduce distracting noise. Preserve the character of the voice and the performance while improving consistency across the scene.

Continuity · Noise Reduction · Performance

For filmmakers and sound post-production partners.

Project enquiries