


Click in the following button to use this new version: Audacity is our recommended audio editor online for MP3 and WAV files. Constrained prevents a very high bit rate peak from happening by setting an upper limit.We have upgraded AudaCity online in our platform.

Constrained: sets an upper limit to the variable bit rate.Off: will export a file with a constant bit rate, the rate that you set.On: (default) will give you a variable bit rate to optimize the exported audio.This is the mode used for Variable Bit Rate. Opus uses a 20 ms frame size by default, as it gives a decent mix of low latency and good quality, the default 20 ms frames are a good choice for most applications. The Frame Duration ranges from 2.5 ms to 60 ms. This controls the degree of compression used ranging from 1 to 10 (default). Opus at 64-96 kbps shows slightly superior quality compared to AAC and significantly better quality compared to Vorbis and MP3 at the same bit rate. The default is 128 kbps, Opus at 128 kbps (VBR) is pretty much transparent. Opus Export in Audacity offers several different bit rate options for the export ranging from 6 kbps up to 256 kbps. The Format options offer different ways to control the trade-off between the size and quality of the exported files.
