在解析WAV文件时。会从头文件里读取TAG值，表示当前文件的压缩格式，如该值为1，表示没有压缩，其他表示不同的压缩方式。

如当中为6时，表示压缩方式是alaw

列表例如以下：

TAG值

音频描写叙述

0x0000

Unknown

0x0001

Microsoft PCM

0x0002

Microsoft ADPCM

0x0003

IEEE Float

0x0004

Compaq VSELP

0x0005

IBM CVSD

0x0006

Microsoft ALAW

0x0007

Microsoft MULAW

0x0010

OKI ADPCM

0x0011

Intel DVI ADPCM

0x0012

Videologic MediaSpace ADPCM

0x0013

Sierra ADPCM

0x0014

Antex Electronics G.723 ADPCM

0x0015

DSP Solution DIGISTD

0x0016

DSP Solution DIGIFIX

0x0017

Dialogic OKI ADPCM

0x0018

MediaVision ADPCM

0x0019

HP CU

0x0020

Yamaha ADPCM

0x0021

Speech Compression Sonarc

0x0022

DSP Group True Speech

0x0023

Echo Speech EchoSC1

0x0024

Audiofile AF36

0x0025

APTX

0x0026

AudioFile AF10

0x0027

Prosody 1612

0x0028

LRC

0x0030

Dolby AC2

0x0031

Microsoft GSM610

0x0032

Microsoft MSNAudio

0x0033

Antex ADPCME

0x0034

Control Res VQLPC

0x0035

Digireal

0x0036

DigiADPCM AC2

0x0037

Control Res CR10

0x0038

NMS VBXADPCM AC2

0x0039

Roland RDAC

0x003A

EchoSC3

0x003B

Rockwell ADPCM

0x003C

Rockwell Digit LK

0x003D

Xebec

0x0040

Antex Electronics G.721

0x0041

Antex Electronics G.728 CELP

0x0042

Microsoft MSG723

0x0050

MPEG

0x0052

Voxware RT24

0x0053

InSoft PAC

0x0055

MPEG Layer 3

0x0059

Lucent G.723

0x0060

Cirrus

0x0061

ESPCM

0x0062

Voxware

0x0063

Canopus Atrac

0x0064

APICOM G.726 ADPCM

0x0065

APICOM G.722 ADPCM

0x0066

Microsoft DSAT

0x0067

Microsoft DSAT Display

0x0069

Voxware Byte Aligned

0x0070

Voxware AC8

0x0071

Voxware AC10

0x0072

Voxware AC16

0x0073

Voxware AC20

0x0074

Voxware Metavoice

0x0075

Voxware Metasound

0x0076

Voxware RT29HW

0x0077

Voxware VR12

0x0078

Voxware VR18

0x0079

Voxware TQ40

0x0080

Softsound

0x0081

Voxware TQ60

0x0082

MSRT24

0x0083

AT&T G.729A

0x0084

Motion Pixels MVI MV12

0x0085

DF G.726

0x0086

DF GSM610

0x0088

ISIAudio

0x0089

Onlive

0x0091

Siemens SBC24

0x0092

Dolby AC3 SPDIF

0x0097

ZyXEL ADPCM

0x0098

Philips LPCBB

0x0099

Packed

0x0100

Rhetorex ADPCM

0x0101

BeCubed IRAT

0x0111

Vivo G.723

0x0112

Vivo Siren

0x0123

DEC G.723

0x0200

Creative ADPCM

0x0202

Creative FastSpeech8

0x0203

Creative FastSpeech10

0x0220

Quarterdeck

0x0300

Fujitsu FM Towns Snd

0x0400

BTV Digital

0x0680

AT&T VME VMPCM

0x1000

Olivetti OLIGSM

0x1001

Olivetti OLIADPCM

0x1002

Olivetti OLICELP

0x1003

Olivetti OLISBC

0x1004

Olivetti OLIOPR

0x1100

LH Codec

0x1400

Norris

0x1401

AT&T ISIAudio

0x1500

AT&T Soundspace Music Compression

0x2000

DVM

0xFFFE

WAVE_FORMAT_EXTENSIBLE

0xFFFF

Experimental