[DirectX 8.1 C/C++ Programmer's Reference] DSFXEcho (58.1585081585082%)

DirectX 8.1 (C++) > DirectX Audio > DirectSound C/C++ Reference > DirectSound Structures

[DirectX 8.1 Visual Basic Programmer's Reference] DSFXECHO (44.5277149321267%)

DirectX 8.1 (Visual Basic) > DirectX Audio > DirectSound Visual Basic Reference > DirectSound Types