Change WAV sample rate
Upload a WAV file and resample it to the sample rate you need.
New sample rate
Upload a WAV file and resample it to the sample rate you need.
Pick a new sample rate and the tool resamples your WAV to it, writing a fresh uncompressed file. The classic moves: 44.1 kHz for CD-lineage audio, 48 kHz for anything destined for video, and lower rates like 16 kHz where speech pipelines demand them.
Mismatched sample rates cause real problems: audio drifting out of sync in video editors, DAWs forcing project-wide conversions, and transcription APIs rejecting input outright. Resampling once, correctly, avoids all of it.
Downsampling discards frequencies above the new Nyquist limit (half the sample rate); content below it is preserved by the resampler. Upsampling never adds detail, it only makes the file bigger, so upsample only when a tool insists on a specific rate.
48 kHz. It is the standard for film and video, and editors stop resampling (or complaining) when your audio already matches.
Not in itself: both cover the audible spectrum. What matters is matching your target medium so no extra conversions happen downstream.
No, resampling runs locally in your browser regardless of file size.