TAPIEx ActiveX Control v3.6 |
Property SAPI_UseNativeAudioObj As BooleanRead/Write: Read and Write
The native audio object of SAPI 5.1 (ISpMMSysAudio) supports PCM wave format only. But some telephony devices such as Dialogic ProLine/2V,D/41E,D/41ESC,D/21D,D/41D,D/21H,D/41H don't support PCM (it support u-LAW only), so those devices MUST set SAPI_UseNativeAudioObj false to perform TTS or SR.