取得 WAV 文件信息

WAV 文件基本信息包括如是否立体声，采样频率等。
声明：
Public Const RIFF_ID = 1179011410
Public Const RIFF_WAVE = 1163280727
Public Const RIFF_FMT = 544501094
'Typical header of a simple RIFF WAVE file
Public Type WAVInfo
Riff_Format As Long
chunk_size As Long
ChunkID As Long fmt As Long
Wave_Format As Integer
Channels As Integer '0 = 单声道, 1 = 立体声
SamplesPerSecond As Long
AverageBytesPerSecond As Long '11.025kHz, 22.05kHz, 等
BlockAlign As Integer 'Size of blocks for low level playback
End Type
函数：
Public Function GetWaveInfo(Byval filename As String, Byref w As WAVInfo) _
As Boolean

Dim ff As Integer
ff = FreeFile

On Error GoTo ehandler
Open filename For Binary Access Read As #ff

On Error GoTo ehandler_fo
Get #ff, , w
Close #ff

On Error GoTo ehandler

If w.Riff_Format = RIFF_ID And w.ChunkID = _
RIFF_WAVE And w.fmt = RIFF_FMT Then

GetWaveInfo = True
Else
GetWaveInfo = False
End If

Exit Function

ehandler_fo:
Close #ff
ehandler:
GetWaveInfo = False
End Function

上一篇： 在Visual Basic 6.0中实现自动播放VCD
下一篇： 利用API播放声音文件

标签：

版权申明：本站文章部分自网络，如有侵权，请联系：west999com@outlook.com
特别注意：本站所有转载文章言论不代表本站观点，本站所提供的摄影照片，插画，设计作品，如需使用，请与原作者联系，版权归原作者所有