Call Optimizer
Use this to make call-centre recordings easier to listen to, recover speech from old phone calls, or sharpen a field recording where the speaker is hard to hear.
Free to download, install and update. No signup; all 76 tools are free within daily limits, Pro only lifts the limits.
What it does
Use this to make call-centre recordings easier to listen to, recover speech from old phone calls, or sharpen a field recording where the speaker is hard to hear. Supports MP3, WAV and telephony codecs (GSM, AMR).
How to use it
- 1Drag the call recordings into the list.
- 2Set the Enhancement Level (1-100, default 80).
- 3Pick an Optimization Profile: Phone, Radio or Crystal Clarity.
- 4Click Run.
Use cases
Polish call-centre recordings for review
Add the recordings, Phone profile, Level 80, run.
Recover speech from an old radio recording
Add the radio file, Radio profile, Level 90, run.
Sharpen the speaker on a meeting recording
Add the file, Crystal Clarity, Level 70, run.
Customer-complaint intelligibility
Add every call, Phone profile, Level 80, run.
Frequently asked questions
Is Call Optimizer free?
Yes. Downloading, installing and updating BulkPro is free and requires no signup. All 76 tools work for free within daily usage limits; Pro plans only lift the daily limits of the modules you pick.
Local processing
Runs on your CPU/GPU. No file leaves your machine.
Batch ready
Process dozens or thousands of files in one run.
Part of BulkPro
Bundled with 76 tools across 7 modules: one install, one app.
Full UI reference, step-by-step workflows, edge cases
Every input, button, and behavior documented for advanced users.