If room noise seems to swell between words after compression, compare the processed voice with a bypassed copy at a similar listening level. Compression and makeup gain can make existing noise more noticeable, while timing settings can change how its level recovers. Do not keep strengthening noise reduction before identifying the treatment that introduced the effect.
Locate the change in the signal chain
Listen to the untreated recording, then enable processing stages one at a time. Choose a phrase with a loud word, a quiet ending and a short pause. If the untreated room sound is steady but the processed pause rises after speech, examine compression and subsequent gain.
Audacity's compressor documentation describes threshold, ratio, attack, release and makeup gain. Those controls shape dynamics; they do not classify every quiet sound as unwanted noise. An audible breath can be part of the performance rather than a defect to erase.
Compare at a meaningful level
A louder version often appears more impressive, so reduce the processed playback gain for a fair comparison where needed. Check whether the pumping remains when the voices sound similarly loud. Keep the original unmodified and save a separate test rather than committing the whole recording immediately.
Start with a restrained change to one parameter in the actual editor. Reducing unnecessary makeup gain or making compression less aggressive may be more useful than adding another repair stage. Attack and release depend on the voice and phrase structure; no single timing preset is correct for every narration.
A hypothetical quiet-room narration
Suppose a narrator records in a room with a steady fan. The raw take has consistent fan sound, but after strong compression the fan becomes conspicuous whenever a phrase finishes. The editor tests a gentler version and a bypassed version at comparable voice level.
Review the end of each sentence, breaths and the first word after silence. The goal is stable, understandable speech with tolerable room sound, not a maximally loud waveform. This is a hypothetical comparison, not a measured result for a particular compressor.
Reject damage disguised as cleanliness
A gate that removes every pause can trade pumping for missing syllables and unnatural room changes. Strong denoising can create a metallic voice. Compare any additional treatment against the same unprocessed phrase and the actual delivery loudness requirement.
Accept when the voice remains complete, background changes are unobtrusive and loudness fits the intended film. Reject processing that makes quiet words hard to understand or replaces steady ambience with obvious surges. Recheck the finished mix beneath music and on the intended listening device. Save the treatment order and approved settings. These are external audio-editing decisions; an Imagild generated film still needs review of its actual sound rather than an assumption that compression means automatic noise removal.
Sources
Prepared by Imagild Editorial with AI assistance and reviewed against the linked sources on October 13, 2026. Examples are hypothetical; external procedures do not establish Imagild features or guarantee results.