A large number of file coding types for ".wav" files have been registered with Microsoft and the following are supported for ".wav" files in Vox Studio: 8-bits linear PCM, 16-bits linear PCM, A-law, Mu-law, Dialogic ADPCM, OKI ADPCM.
The industry standard format for multimedia sound files is the ".wav" PCM format. These files are usually (but not necessarily) recorded at 11.025 KHz, 22.05 KHz, 44.1 KHz or 48 KHz sampling rates with a resolution of either 8 or 16 bits.
In addition to 11, 22, 44 and 48 KHz files Vox Studio can also record and play back ".wav" files at 6.0, 6.053, 7.2, 8.0, 8.117, 16, 24, 32 and 64 KHz. These are the sampling frequencies used by most industry-standard telephony voice cards.
A nice characteristic of ".wav" files is that they have a header that contains useful information such as resolution in bits and sampling rate in Hz. Therefore, when Vox Studio reads ".wav" files it is unnecessary to tell it what the file type is. Vox Studio gets that information from the ".wav" files themselves (this is not so with telephony type files which usually contain raw data only).
Vox Studio can also write the very old ".wav" file format used by some obsolete ".wav" utilities. There is an option in the output file format section of the Defaults menu that allows you to write the old-format files. Do not use this unless you absolutely must do so.
The higher the sampling rate and resolution, the better the sound quality. Unfortunately the storage requirements are also directly proportional to both the sampling rate and resolution:
6,000 Hz Telephone quality, poor
6,053 Hz Telephone quality, poor
7,200 Hz Telephone quality, poor
8,000 Hz Telephone quality, ok to good
8,117 Hz Telephone quality, ok to good
11,025 Hz AM radio quality
22,050 Hz FM radio quality
44,100 Hz CD quality (if 16 bits)
48,000 Hz CD quality (if 16 bits)