Newbie here and I’ve got a question about the WAV files that Audacity saves. I understand that a WAV file can contain either lossy or lossless audio. I’m not sure how, but somewhere I got the impression that when I export my recording as a WAV, that Audacity saves it as lossless. However when I save the exact same recording as a lossless project, it again saves the recording as a WAV file but is exactly twice the size of the previous WAV file (no editing was done, or change in format). What is the difference between the two WAV files? I’m using version 2.3.3.
If I’ve posted this in the wrong section let me know.
You can compare the file format details by dropping into [u]MediaInfoOnline[/u]. (Or you can download and install the “regular” MediaInfo application on your computer.)
As long as you know there are 8-bits in a byte you can calculate file size for uncompressed data as follows: File Size in bytes = Playing Time In Seconds x Sample rate in Hz x Number of channels x (bit depth/8).
For example, CD audio is 44,100 samples per second x 2-channels x (16/8) = 176,400 bytes per second. (And that works out to about 10MB per minute.)
However when I save the exact same recording as a lossless project,
When you save a project it’s saved as 32-bit floating-point which is twice as big as 16-bits, but you don’t get a WAV file unless you export.
You can export to floating point, and it’s possible for a WAV file to contain compressed audio but it’s rare and I’ve never seen a file like that.