Batch audio processing for delivery: convert formats while denoising, normalizing loudness and trimming silence, plus a CLI
PureConvert Pro adds the processing you usually do before delivery to PureConvert Batcher's batch transcoding: denoise, head/tail silence trimming, fades, padding, channel conversion, volume gain and loudness normalization. Loudness presets cover podcast, streaming, broadcast and ACX audiobooks, or set your own target loudness, true peak and loudness range. Parameters set in the interface can be copied as a command line; subscribers can run the whole pipeline inside scripts and automation.
Everything PureConvert Batcher does: whole folders processed in batch with the directory structure preserved, seven output formats, tags and artwork copied along, DSD-to-PCM, and finished files skipped automatically.
Presets for podcast (-16 LUFS), ACX audiobooks (-20 LUFS), music streaming (-14 LUFS) and broadcast (-23 LUFS), or set your own target loudness, true peak and loudness range.
Outputs MP3 to the ACX spec (192 kbps CBR, 44.1 kHz, mono) and automatically applies -20 LUFS loudness normalization, denoise, limiting and room tone repair.
Removes steady background noise from recordings in batch. Suited to podcasts, voice-over and interview material before further work.
Trims head and tail silence by threshold (dB) and minimum duration (seconds); can also pad a set number of seconds of silence at either end, or add fades.
Converts between stereo and mono, sets a target sample rate, and applies a uniform volume gain in dB.
Sets how many files are processed at once. Defaults to an automatic value based on the machine.
Set parameters in the interface, click "Copy as CLI", and paste the command into a terminal or script to run without the UI. Every transcoding, processing and loudness option has a matching flag.
| Preset | Target loudness | Typical use |
|---|---|---|
| Podcast | -16 LUFS | Podcast platforms, spoken content |
| ACX audiobook | -20 LUFS | Audible / ACX audiobook delivery |
| Music streaming | -14 LUFS | Music on streaming services |
| Broadcast | -23 LUFS | Broadcast TV and radio programs |
| Custom | You set it | Target loudness, true peak (dB) and loudness range (LU, can be auto) |
In ACX mode the output is fixed at 192 kbps CBR, 44.1 kHz mono MP3, and denoise, limiting and room tone repair are applied automatically.
| Option | Adjustable parameters |
|---|---|
| Denoise | On / off |
| Head/tail silence trim | Threshold (dB), minimum duration (seconds) |
| Pad start / end | Seconds |
| Fade in / out | Seconds |
| Channel conversion | Mono / stereo |
| Target sample rate | Pick as needed |
| Volume gain | dB |
| Loudness normalization | Preset or custom |
| Concurrency | Auto or set manually |
All processing happens in the same pass as the transcoding. No intermediate exports are needed.
The CLI is available to subscribers. Every interface option has a matching flag, for example:
--source / --target: source and target folders--output-format, --quality-preset, --sample-rate, --bit-depth, --channel--denoise, --gain-db--loudnorm-preset podcast|acx|music|broadcast|custom, plus --loudnorm-target-i, --loudnorm-target-tp, --loudnorm-target-lra--trim-threshold-db, --trim-min-duration-sec, --pad-start-sec, --pad-end-sec, --fade-in-sec, --fade-out-sec--max-concurrency: concurrent file countYou do not need to memorize these. Set options in the interface and click “Copy as CLI” to get the full command.
| Free | Lifetime | Subscription (monthly / yearly) | |
|---|---|---|---|
| Files per batch | 10 | 100 | Unlimited |
| Lifetime total | 100 files | Unlimited | Unlimited |
| All processing options | ✓ | ✓ | ✓ |
| Command line | ✓ |
The free quota is a cumulative count and does not reset monthly. The lifetime license is a one-time purchase and unlocks the graphical interface only; the command line requires a subscription. If you only need format conversion without this processing, the free PureConvert Batcher is enough.
All transcoding and processing happens locally. Files are never uploaded, there is no account and no usage statistics. The network is only used for purchases and restoring purchases, through the Mac App Store or Microsoft Store.
Batcher only converts formats. Pro adds denoise, silence trimming, fades, channel conversion, gain and loudness normalization in the same pass, plus the ACX audiobook mode and a command line.
Podcast -16, ACX audiobook -20, music streaming -14 and broadcast -23 LUFS. You can also set a custom target loudness, true peak and loudness range.
It outputs 192 kbps CBR, 44.1 kHz mono MP3 and automatically applies -20 LUFS loudness normalization, denoise, limiting and room tone repair.
Set parameters in the interface, click "Copy as CLI", then paste the command into a terminal or script. The command line requires a subscription.
Up to 10 files per batch and 100 files total, with every processing option available. The lifetime license allows 100 per batch with no total cap; the subscription removes all limits and includes the CLI.
Yes. After processing, tags and artwork are copied to the new file and read back for verification.
No. Transcoding and processing run locally. The network is only used for purchases and restoring them.
PureConvert Pro is designed for offline local processing and does not depend on cloud transcoding. Read ourprivacy policyfor full data-handling details.