Group ns-MFCC

Modules > ns-MFCC

Classes

Type	Name
struct	ns_mfcc_cfg_t Config and state for MFCC calculator.

Public Attributes

Type	Name
const ns_core_api_t	ns_mfcc_V0_0_1
const ns_core_api_t	ns_mfcc_V1_0_0
const ns_core_api_t	ns_mfcc_current_version
const ns_core_api_t	ns_mfcc_oldest_supported_version

Public Functions

Type	Name
uint32_t	ns_mfcc_compute (ns_mfcc_cfg_t * c, const int16_t * audio_data, float * mfcc_out) Computes MFCC based on audio data.
uint32_t	ns_mfcc_init (ns_mfcc_cfg_t * c) Initializes the MFCC calculator based on desired configuration.

Macros

Type	Name
define	M_2PI 6.283185307179586476925286766559005
define	M_PI 3.14159265358979323846264338328
define	NS_MFCC_API_ID 0xCA0005
define	NS_MFCC_CURRENT_VERSION NS\_MFCC\_V1\_0\_0
define	NS_MFCC_OLDEST_SUPPORTED_VERSION NS\_MFCC\_V0\_0\_1
define	NS_MFCC_SIZEBINS 53
define	NS_MFCC_V0_0_1 { .major = 0, .minor = 0, .revision = 1 }
define	NS_MFCC_V1_0_0 { .major = 1, .minor = 0, .revision = 0 }

Public Attributes Documentation

variable ns_mfcc_V0_0_1

const ns_core_api_t ns_mfcc_V0_0_1;

---

variable ns_mfcc_V1_0_0

const ns_core_api_t ns_mfcc_V1_0_0;

---

variable ns_mfcc_current_version

const ns_core_api_t ns_mfcc_current_version;

---

variable ns_mfcc_oldest_supported_version

const ns_core_api_t ns_mfcc_oldest_supported_version;

---

Public Functions Documentation

function ns_mfcc_compute

Computes MFCC based on audio data.

uint32_t ns_mfcc_compute (
    ns_mfcc_cfg_t * c,
    const int16_t * audio_data,
    float * mfcc_out
) 

Parameters:

• c - configuration struct (see ns_mfcc_cfg_t) from ns_mfcc_init
• audio_data - pointer to audio data (int16_t)
• mfcc_out - pointer to output buffer (float)

Returns:

uint32_t

---

function ns_mfcc_init

Initializes the MFCC calculator based on desired configuration.

uint32_t ns_mfcc_init (
    ns_mfcc_cfg_t * c
) 

Parameters:

• c configuration struct (see ns_mfcc_cfg_t)

Returns:

uint32_t status

---

Macro Definition Documentation

define M_2PI

#define M_2PI `6.283185307179586476925286766559005`

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define M_PI

#define M_PI `3.14159265358979323846264338328`

---

define NS_MFCC_API_ID

#define NS_MFCC_API_ID `0xCA0005`

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define NS_MFCC_CURRENT_VERSION

#define NS_MFCC_CURRENT_VERSION `NS_MFCC_V1_0_0`

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define NS_MFCC_OLDEST_SUPPORTED_VERSION

#define NS_MFCC_OLDEST_SUPPORTED_VERSION `NS_MFCC_V0_0_1`

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define NS_MFCC_SIZEBINS

#define NS_MFCC_SIZEBINS `53`

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define NS_MFCC_V0_0_1

#define NS_MFCC_V0_0_1 `{ .major = 0, .minor = 0, .revision = 1 }`

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define NS_MFCC_V1_0_0

#define NS_MFCC_V1_0_0 `{ .major = 1, .minor = 0, .revision = 0 }`

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