Cheetah Speech-to-Text
Go API

API Reference for the Cheetah Go SDK (pkg.go.dev )

cheetah.FrameLength

var FrameLength int

Number of audio samples per frame.

cheetah.SampleRate

var SampleRate int

Audio sample rate accepted by Cheetah.

cheetah.Version

var Version string

Cheetah version.

cheetah.Cheetah

type Cheetah struct

Struct for the Cheetah Speech-to-Text engine.

cheetah.Cheetah.AccessKey

var AccessKey string

AccessKey obtained from Picovoice Console (https://console.picovoice.ai/ ).

cheetah.Cheetah.ModelPath

var ModelPath string

Absolute path to the file containing model parameters.

cheetah.Cheetah.LibraryPath

var LibraryPath string

Absolute path to Cheetah's dynamic library.

cheetah.Cheetah.EndpointDuration

var EndpointDuration float32

Duration of endpoint in seconds. A speech endpoint is detected when there is a chunk of audio (with a duration specified herein) after an utterance without any speech in it. Set to 0 to disable endpoint detection.

cheetah.Cheetah.EnableAutomaticPunctuation

var EnableAutomaticPunctuation bool

Flag to enable automatic punctuation insertion.

cheetah.Cheetah.Delete()

func (cheetah *Cheetah) Delete() error

Releases resources acquired by Cheetah.

Returns

• error : Error produced by the Cheetah SDK. nil if no error was encountered.

cheetah.Cheetah.Flush()

func (cheetah *Cheetah) Flush() (string, error)

Marks the end of the audio stream, flushes internal state of the object, and returns any remaining transcribed text. Return any remaining transcribed text. If none is available then an empty string is returned.

Returns

• string : Any transcription text.
• error : Error produced by the Cheetah SDK. nil if no error was encountered.

cheetah.Cheetah.Init()

func (cheetah *Cheetah) Init() error

Init function for Cheetah. Must be called before attempting process.

Returns

• error : Error produced by the Cheetah SDK. nil if no error was encountered.

cheetah.Cheetah.Process()

func (cheetah *Cheetah) Process(pcm []int16) (string, bool, error)

Processes a frame of audio and returns newly-transcribed text and a flag indicating if an endpoint has been detected. Upon detection of an endpoint, the client may invoke .Flush() to retrieve any remaining transcription. Returns Any newly-transcribed speech (if none is available then an empty string is returned) and a flag indicating if an endpoint has been detected.

Returns

• string : Any newly-transcribed speech.
• bool : A flag indicating whether an endpoint has been detected.
• error : Error produced by the Cheetah SDK. nil if no error was encountered.

cheetah.NewCheetah()

func NewCheetah(accessKey string) Cheetah

Creates a Cheetah struct with default parameters.

Parameters

• accessKey string : AccessKey obtained from Picovoice Console (https://console.picovoice.ai/ ).

Returns

• Cheetah : An instance of Cheetah struct.

cheetah.CheetahError

type CheetahError struct

Custom error type for errors produced from the Cheetah Go SDK.

cheetah.CheetahError.Error()

func (e *CheetahError) Error() string

Formats the Cheetah error into a string.

Returns

• string : Formatted error string.

cheetah.PvStatus

type PvStatus struct

Status return codes from the Cheetah library. Possible values are:

const (
    SUCCESS                  PvStatus = 0
    OUT_OF_MEMORY            PvStatus = 1
    IO_ERROR                 PvStatus = 2
    INVALID_ARGUMENT         PvStatus = 3
    STOP_ITERATION           PvStatus = 4
    KEY_ERROR                PvStatus = 5
    INVALID_STATE            PvStatus = 6
    RUNTIME_ERROR            PvStatus = 7
    ACTIVATION_ERROR         PvStatus = 8
    ACTIVATION_LIMIT_REACHED PvStatus = 9
    ACTIVATION_THROTTLED     PvStatus = 10
    ACTIVATION_REFUSED       PvStatus = 11
)