Resample an audio file
The whole job takes four clicks, and the app reads your file first so you know what you are converting.
- Open the file. Click Browse next to Input audio file, drag the file onto the window, or pick it from Recent.
- Check the source. The app shows the file's sample rate, bit depth, channels and duration right under the path.
- Pick the target. Choose a rate in Resample to, a Output bit depth and a Resampling quality - or pick a Preset. The output name is filled in for you, for example
song_48000hz.wav.
- Resample. Click Resample, then Open output folder to find the new file.
Tip: the app remembers the last output folder, so a batch of files from Downloads all lands in the same place.
Convert 44.1 kHz to 48 kHz for video
Premiere Pro, DaVinci Resolve and Final Cut Pro work at 48 kHz. Music at 44.1 kHz should be converted before you edit.
- Load the 44.1 kHz track. The source line shows
44100 Hz.
- Set the target. Resample to 48000, 24-bit PCM (studio), Very High (best quality).
- Resample and import. Drop the new WAV into your editor - no more sample rate warnings or drift.
Going the other way? For 48 kHz to 44.1 kHz before a CD or streaming release, pick 44100 and keep Very High quality.
Convert to 44.1 kHz 16-bit for CD
CD burning software, car stereos and many older players expect 44.1 kHz 16-bit. Hi-res 24-bit or 96 kHz files need both the rate and the bit depth changed.
- Open the file. A 96 kHz 24-bit or 48 kHz file works the same way.
- Pick the preset. Choose CD - 44.1 kHz 16-bit WAV in Preset. Leave Dither when saving 16-bit ticked so quiet fades stay smooth.
- Resample. The new WAV is ready for burning or any CD-standard player.
Already 44.1 kHz? The app now converts only the bit depth or format when the rate already matches - handy for a quick 24-bit to 16-bit job.
Batch convert many files at once
Resample a whole album or a folder of samples with the same settings in one go.
- Select the files. Click Browse and Ctrl+click or Shift+click several files, or drop them all on the window.
- Choose the folder. The output box switches to a folder. Each file is saved as
name_48000hz.flac and so on.
- Set the options and Resample. The progress bar shows which file is running, and a summary lists anything that could not be read.
Tip: choose FLAC to keep the files lossless at about half the size of WAV.
Choose the quality and bit depth
The output file is the same size at every quality level - only the filter and the speed change.
- Very High - mastering, archiving and anything you will process further. A little slower on very long files.
- High - music for streaming releases; artifacts are inaudible on typical material.
- Medium - podcasts, voice and casual listening.
- Low and Quick - speech, voice memos and previews only.
Bit depth: 16-bit PCM for CD and general use (with dither on), 24-bit PCM for studio work, 32-bit float when the file goes back into a DAW. FLAC goes up to 24-bit.
Add MP3, M4A, AAC and OPUS support
WAV, FLAC, AIFF and OGG open out of the box. For compressed formats - and for MP3 output - the app uses FFmpeg, a free tool you add once.
- Download FFmpeg. Get the Windows build from free-codecs.com and unzip it.
- Copy one file. Put
ffmpeg.exe in the same folder as X-Sample-Rate-Converter.exe.
- Restart the app. The status line now shows FFmpeg: found, MP3, M4A, AAC, OPUS, WMA and APE files open like any other, and MP3 320 kbps output is unlocked.
Already have FFmpeg? If ffmpeg.exe is on your Windows PATH, the app finds it there too.
