Resampling Audio to Different Sample Rates
This audio resampler changes the sample rate of your audio file. Choose from standard rates: 8 kHz (telephone), 11.025 kHz, 16 kHz (wideband), 22.05 kHz, 32 kHz, 44.1 kHz (CD), 48 kHz (DAT), 88.2 kHz, 96 kHz, or 192 kHz (high-resolution).
Resampling recalculates the audio waveform to match the new sample rate. Downsampling (higher to lower) removes high frequencies. Upsampling (lower to higher) interpolates new samples.
Who Uses Sample Rate Resampling
- Video editors who recorded at 48 kHz for video but need 44.1 kHz for CD or music distribution. They resample without changing pitch or duration.
- Developers who need audio at specific sample rates for a project—game audio, phone systems, or embedded devices with fixed requirements.
- Podcasters who recorded at 44.1 kHz but want smaller files for distribution. They resample to 22.05 kHz or 16 kHz, which is fine for speech.
- Legacy audio handlers who have audio at unusual sample rates that modern software won't accept. They resample to a standard rate.
- Audio engineers who match sample rates across multiple files for a project that requires consistent rates throughout.
What to Know Before Using It
- Upsampling doesn't add quality. Converting 44.1 kHz to 192 kHz makes a bigger file but doesn't restore frequencies that weren't recorded.
- Downsampling removes high frequencies permanently. Audio converted from 44.1 kHz to 8 kHz loses everything above 4 kHz.
- Different sample rates suit different purposes: 8 kHz for telephone, 16 kHz for voice recognition, 44.1 kHz for music, 48 kHz for video.
- The output is MP3 format. Sample rate conversion happens during encoding, so you can't get lossless output.
- Your browser handles the resampling. Quality is good for most purposes but not professional-audio grade.
FAQ
- What sample rate should I use for speech?
- 16 kHz or 22.05 kHz is sufficient for speech. 44.1 kHz or 48 kHz works but creates larger files without audible benefit.
- What sample rate for music?
- 44.1 kHz (CD standard) or 48 kHz (video standard). Higher rates (96 kHz, 192 kHz) are for recording and processing, not playback.
- Does resampling change pitch or duration?
- No—proper resampling maintains both pitch and duration. Only the sample rate changes.
- Can I resample from any rate?
- The tool accepts any standard sample rate and converts to the listed options. Unusual rates get resampled to your chosen target.
- Is there quality loss in resampling?
- Some—resampling filters aren't perfect. For critical applications, use professional audio software with high-quality resamplers.
- Can I reverse resampling?
- You can convert back, but downsampling loses high-frequency content permanently. Upsampling that back won't restore what was lost.