adiRecordAsync

typedef struct
{
 DWORD size;    /* size of this structure           */
 DWORD DTMFabort;
    /* mask that specifies DTMF tones to abort;              */
    /* INT32 gain; recording gain in dB SLC parms              */
    /* (used if silence det)]               */
 DWORD novoicetime; 
    /* length of initial silence to stop                */
    /* recording (ms);use 0 to deactivate initial              */
    /* silence detection.              */
 DWORD silencetime;
    /* length of silence to stop recording after              */
    /* voice has been detected ; use 0 to deactivate.              */
 INT32 silenceampl; /* qualif level for silence (dBm)                */
 DWORD silencedeglitch;
     /* deglitch while qualifying silence   */
     /*-[Beep for record]-------------------*/
 DWORD beepfreq;    /* beep frequency (Hz)                 */
 INT32 beepampl;    /* beep amplitude (dBm)                */
 DWORD beeptime;    /* beep time (ms) 0=no beep            */
     /*--[AGC parms]------------------------*/
 DWORD AGCenable; /* enable AGC; use 1 to activate       */
 INT32 AGCtargetampl;      /* target AGC level (dBm)      */
 INT32 AGCsilenceampl;      /* silence level (dBm)         */
 DWORD AGCattacktime;      /* attack time (ms)            */
 DWORD AGCdecaytime;      /* decay time (ms)             */
} ADI_RECORD_PARMS;

DSP File	Encoding Rate
voice.dsp/voxr.dsp	ADI_ENCODE_NMS_16, ADI_ENCODE_NMS_24, ADI_ENCODE_NMS_32, ADI_ENCODE_NMS_64
rvoice.dsp	ADI_ENCODE_MULAW, ADI_ENCODE_ALAW, ADI_ENCODE_PCM8M16
okirec.dsp	ADI_ENCODE_OKI_24, ADI_ENCODE_OKI_32
wavrec.dsp	ADI_ENCODE_PCM11M8, ADI_ENCODE_PCM11M16
g726r.dsp	ADI_ENCODE_G726

Note: You cannot initiate a record operation while playing voice or generating tones. You cannot start a record operation if the energy detector is active, unless both novoicetime and silencetime are zero.