[Question] How can I record WAV or MP3? about mic HOT 1 CLOSED

.wav (also with −t sndfile)
Microsoft .WAV RIFF files. This is the native audio file format of Windows, and widely used for uncompressed audio.
Normally .wav files have all formatting information in their headers, and so do not need any format options specified for an input file. If any are, they will override the file header, and you will be warned to this effect. You had better know what you are doing! Output format options will cause a format conversion, and the .wav will written appropriately.
SoX can read and write linear PCM, floating point, μ-law, A-law, MS ADPCM, and IMA (or DVI) ADPCM encoded samples. WAV files can also contain audio encoded in many other ways (not currently supported with SoX) e.g. MP3; in some cases such a file can still be read by SoX by overriding the file type, e.g.
   play −t mp3 mp3−encoded.wav
Big endian versions of RIFF files, called RIFX, are also supported. To write a RIFX file, use the −B option with the output file options.