> ## Documentation Index
> Fetch the complete documentation index at: https://dragonwingdocs-staging.qualcomm.com/llms.txt
> Use this file to discover all available pages before exploring further.
# VAD API
> This file contains CAPI VAD module APIs.
**Header:** `spf/api/modules/vad_api.h`
## Structures
### `param_id_vad_static_cfg_t`
**Members**
### `param_id_vad_context_ml_model_config_t`
**Members**
### `capi_vad_context_threshold_struct_t`
**Members**
Context\_id is indepedent of mode\_bit and usecase designer has to tune this based on model which is being set from application}
### `param_id_vad_context_threshold_t`
**Members**
### `param_id_vad_speech_dynamic_config_t`
**Members**
### `param_id_vad_enable_speech_reset_t`
**Members**
### `param_id_vad_speech_reset_period_t`
**Members**
### `param_id_vad_pre_roll_duration_t`
**Members**
## Type Definitions
### `param_id_vad_static_cfg_t`
```cpp theme={null}
typedef struct param_id_vad_static_cfg_t param_id_vad_static_cfg_t
```
### `param_id_vad_context_ml_model_config_t`
```cpp theme={null}
typedef struct param_id_vad_context_ml_model_config_t param_id_vad_context_ml_model_config_t
```
### `capi_vad_context_threshold_struct_t`
```cpp theme={null}
typedef struct capi_vad_context_threshold_struct_t capi_vad_context_threshold_struct_t
```
### `param_id_vad_context_threshold_t`
```cpp theme={null}
typedef struct param_id_vad_context_threshold_t param_id_vad_context_threshold_t
```
### `param_id_vad_speech_dynamic_config_t`
```cpp theme={null}
typedef struct param_id_vad_speech_dynamic_config_t param_id_vad_speech_dynamic_config_t
```
### `param_id_vad_enable_speech_reset_t`
```cpp theme={null}
typedef struct param_id_vad_enable_speech_reset_t param_id_vad_enable_speech_reset_t
```
### `param_id_vad_speech_reset_period_t`
```cpp theme={null}
typedef struct param_id_vad_speech_reset_period_t param_id_vad_speech_reset_period_t
```
### `param_id_vad_pre_roll_duration_t`
```cpp theme={null}
typedef struct param_id_vad_pre_roll_duration_t param_id_vad_pre_roll_duration_t
```
## Macros
### `PARAM_ID_VAD_STATIC_CFG`
```c theme={null}
#define PARAM_ID_VAD_STATIC_CFG 0x08001BE2
```
### `PARAM_ID_VAD_CONTEXT_ML_MODEL_CONFIG`
```c theme={null}
#define PARAM_ID_VAD_CONTEXT_ML_MODEL_CONFIG 0x08001BEA
```
### `PARAM_ID_VAD_CONTEXT_THRESHOLD`
```c theme={null}
#define PARAM_ID_VAD_CONTEXT_THRESHOLD 0x08001BE3
```
### `PARAM_ID_VAD_SPEECH_DYNAMIC_CONFIG`
```c theme={null}
#define PARAM_ID_VAD_SPEECH_DYNAMIC_CONFIG 0x08001BE4
```
### `PARAM_ID_VAD_ENABLE_SPEECH_RESET`
```c theme={null}
#define PARAM_ID_VAD_ENABLE_SPEECH_RESET 0x08001BE5
```
### `PARAM_ID_VAD_SPEECH_RESET_PERIOD`
```c theme={null}
#define PARAM_ID_VAD_SPEECH_RESET_PERIOD 0x08001BE6
```
### `PARAM_ID_VAD_PRE_ROLL_DURATION`
```c theme={null}
#define PARAM_ID_VAD_PRE_ROLL_DURATION 0x08001BE7
```
### `VAD_RELEASE_VERSION_MSB`
```c theme={null}
#define VAD_RELEASE_VERSION_MSB AR_NON_GUID(0x01000100)
```
### `VAD_RELEASE_VERSION_LSB`
```c theme={null}
#define VAD_RELEASE_VERSION_LSB AR_NON_GUID(0x00000000)
```
### `CAPI_VAD_MAX_INPUT_PORTS`
```c theme={null}
#define CAPI_VAD_MAX_INPUT_PORTS 1
```
### `CAPI_VAD_MAX_OUTPUT_PORTS`
```c theme={null}
#define CAPI_VAD_MAX_OUTPUT_PORTS 0
```
### `CAPI_VAD_STACK_SIZE_REQUIREMENT`
```c theme={null}
#define CAPI_VAD_STACK_SIZE_REQUIREMENT 8192
```
### `MODULE_ID_VAD`
```c theme={null}
#define MODULE_ID_VAD 0x07001188
```