convert raw file to wav file

Hello,

I want to convert raw files from a Bat cording system to wav-files for the Bat analysing system.
And I found the Program SOX where I saw that it works with this to file formats.

I work with Windows 10

an I know from the Internet page of the Bat cording systeme that the

RAW files have no header

samplerate 500 kHz
little endien format
PCM 16-bits

other WAV files from an other Bat-cording system have

Channels : 1
Sample Rate : 312500
Precision : 16-bit
Sample Encoding: 16-bit Signed Integer PCM

so i tried a batchfile to convert

@echo
cd C:\temp\sox-14-4-2
for %%i in (C:\temp\*.raw); do (sox.exe -r 500k −b 16 -L −c 1 %%i -r 312500 -b 16 -L -c 1 .\converted\%%i.wav)
pause

but i get this back:

sox.exe FAIL formats: bad input format for file `C:\temp\20230523-N091_B0220-000014.raw': sampling rate was not specified

I thought the "-r 500k" is the information for the sampling rate.

Does anybody can give me an Idea to understand the line?
Thank you for all your Help

Markus

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