just upgraded to the new version .and now when i export a audio file at 44hz 32bit floating which is the same as the original,it saves in some other format thats unreadable,by the player thar created it and instead of being around 35meg they are now double in size anybody else getting this cheers dave
To create an ordinary WAV file that is compatible with just about everything, use:
“File menu > Export > Export as WAV”
I presume that you mean 44100 Hz, 32-bit float.
Although Audacity imports most files as “32-bit float”, that does NOT mean that the original format was 32-bit float. Other than professional audio tools, few applications support 32-bit float format.
“Normal” WAV files are 16-bit integer (the same as CD audio). 32-bit audio files are double the size of 16-bit files.
At 16-bits that would be about a 3-minute file. 32-bits is twice the size or half the playing-time.
You can check and compare the details of both files with [u]MediaInfo[/u].
“CD quality” audio (44.1kHz, 16-bit, stereo) is about 10MB per minute. …Sometimes I remember that and sometimes I have to re-calculate. 
If you know there 8-bits in a byte and if you know that the sample rate in Hz is samples per second, you can easily calculate file size or playing time, etc.,* (for uncompressed files).
For example, 44,1kHz, 32-bit, stereo = 44,100 x (32/8) x 2-channels = 352,800 bytes per second. That works-out to about 20MB per minute, so a 35MB file would be about 1.5 minutes.
A spreadsheet is handy for that. 
…For compressed files, you can similarly use the bitrate. The bitrate in kbps is kilo_bits_ per second so you can divide by 8 to get kilo_bytes_ per second. You can calculate the bitrate for an uncompressed file (CD audio is 1411kbps) but mostly bitrate is used when talking about compressed files.
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- Technically, Hz or kHz is frequency or cycles per second which is the frequency of the sample-rate clock.
around 35meg
With 16-bit stereo that would be about a 3-minute file. 32-bits is twice the size or half the playing-time.
“CD quality” audio (44.1kHz, 16-bit, stereo) is about 10MB per minute. …Sometimes I remember that and sometimes I have to re-calculate. 
You can check and compare the details of both files with [u]MediaInfo[/u].
If you know there 8-bits in a byte and if you know that the sample rate in Hz is samples per second, you can easily calculate file size or playing time, etc.,* (for uncompressed files).
For example, 44,1kHz, 32-bit, stereo = 44,100 x (32/8) x 2-channels = 352,800 bytes per second. That works-out to about 20MB per minute, so a 35MB file would be about 1.5 minutes.
A spreadsheet is handy for that. 
…For compressed files, you can similarly use the bitrate. The bitrate in kbps is kilo_bits_ per second so you can divide by 8 to get kilo_bytes_ per second. You can calculate the bitrate for an uncompressed file (CD audio is 1411kbps) but mostly bitrate is used when talking about compressed files.
\
- Technically, Hz or kHz is frequency or cycles per second which is the frequency of the sample-rate clock.
what it is i record my waves on the keyboard i have yamaha prs sx900 direct from my midi files , the default for wave is 44.100 32bit floating, now they play on anything, the problem started when i upgraded to the new version ,2.33 i have saved hundreds of files the same way ,no problem , they all play on my keyboard or on my ipad and file player,now when i import a file , and export again, in the same format ,they won’t play on anything ,just says format not supported had no problem with the other version only stared when i upgraded to 2.3.3
You can check the format on this web page: MediaInfoOnline - MediaInfo in your browser
I expect you will find that they are not “32-bit floating”.
it says their 16bit ,but in the window on the left of the file when i import them it says 32bit floating ,ive been exporting them in the same format and all my files play only since i updated to 2.33 that this has stared to happen,
Read through this post again, it explains what is happening: https://forum.audacityteam.org/t/saving-file-formats-wrong/55225/2
Does that make it clear?
just checked my keyboard specs and record is 44.00 16 bit. what’s confused me is the 32bit floating that appears in the window at the side of the wave file in Audacity that says 32bit floating when you import a file ,and more confusing why did the files i saved with the earlier version actual save the files in 16bit when i told it to save in 32bit floating ,HEAD CABBAGED
I agree that’s a bit confusing. Personally I’d like that to be removed.
Audacity works internally in 32-bit float format, so to avoid unnecessary conversions, by default Audacity imports most file types as 32-bit float (regardless of what the file format was). “Import” is when Audacity copies the audio data from the file into the Audacity project.
I don’t know of any version of Audacity that does that.
If you were using a very old version of Audacity, the layout of the export options has changed - perhaps that’s what confused you.
Thanks for all the replies guys,very helpful, getting to grips now , will just export 16bit next time ,should solve my problem 