Package speech is an auto-generated package for the Cloud Speech-to-Text API.

Converts audio to text by applying powerful neural network models.

Use of Context

The ctx passed to NewClient is used for authentication requests and for creating the underlying connection, but is not used for subsequent calls. Individual methods on the client use the ctx given to them.

To close the open connection, use the Close() method.

For information about setting deadlines, reusing contexts, and more please visit




This section is empty.


This section is empty.


func DefaultAuthScopes

func DefaultAuthScopes() []string

    DefaultAuthScopes reports the default set of authentication scopes to use with this package.


    type CallOptions

    type CallOptions struct {
    	Recognize            []gax.CallOption
    	LongRunningRecognize []gax.CallOption
    	StreamingRecognize   []gax.CallOption

      CallOptions contains the retry settings for each method of Client.

      type Client

      type Client struct {
      	// LROClient is used internally to handle longrunning operations.
      	// It is exposed so that its CallOptions can be modified if required.
      	// Users should not Close this client.
      	LROClient *lroauto.OperationsClient
      	// The call options for this service.
      	CallOptions *CallOptions
      	// contains filtered or unexported fields

        Client is a client for interacting with Cloud Speech-to-Text API.

        Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

        func NewClient

        func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error)

          NewClient creates a new speech client.

          Service that implements Google Cloud Speech API.


          func (*Client) Close

          func (c *Client) Close() error

            Close closes the connection to the API service. The user should invoke this when the client is no longer required.

            func (*Client) Connection

            func (c *Client) Connection() *grpc.ClientConn

              Connection returns a connection to the API service.


              func (*Client) LongRunningRecognize

                LongRunningRecognize performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface. Returns either an Operation.error or an Operation.response which contains a LongRunningRecognizeResponse message. For more information on asynchronous speech recognition, see the how-to (at


                func (*Client) LongRunningRecognizeOperation

                func (c *Client) LongRunningRecognizeOperation(name string) *LongRunningRecognizeOperation

                  LongRunningRecognizeOperation returns a new LongRunningRecognizeOperation from a given name. The name must be that of a previously created LongRunningRecognizeOperation, possibly from a different process.

                  func (*Client) Recognize

                    Recognize performs synchronous speech recognition: receive results after all audio has been sent and processed.


                    func (*Client) StreamingRecognize

                    func (c *Client) StreamingRecognize(ctx context.Context, opts ...gax.CallOption) (speechpb.Speech_StreamingRecognizeClient, error)

                      StreamingRecognize performs bidirectional streaming speech recognition: receive results while sending audio. This method is only available via the gRPC API (not REST).


                      type LongRunningRecognizeOperation

                      type LongRunningRecognizeOperation struct {
                      	// contains filtered or unexported fields

                        LongRunningRecognizeOperation manages a long-running operation from LongRunningRecognize.

                        func (*LongRunningRecognizeOperation) Done

                          Done reports whether the long-running operation has completed.

                          func (*LongRunningRecognizeOperation) Metadata

                            Metadata returns metadata associated with the long-running operation. Metadata itself does not contact the server, but Poll does. To get the latest metadata, call this method after a successful call to Poll. If the metadata is not available, the returned metadata and error are both nil.

                            func (*LongRunningRecognizeOperation) Name

                              Name returns the name of the long-running operation. The name is assigned by the server and is unique within the service from which the operation is created.

                              func (*LongRunningRecognizeOperation) Poll

                                Poll fetches the latest state of the long-running operation.

                                Poll also fetches the latest metadata, which can be retrieved by Metadata.

                                If Poll fails, the error is returned and op is unmodified. If Poll succeeds and the operation has completed with failure, the error is returned and op.Done will return true. If Poll succeeds and the operation has completed successfully, op.Done will return true, and the response of the operation is returned. If Poll succeeds and the operation has not completed, the returned response and error are both nil.

                                func (*LongRunningRecognizeOperation) Wait

                                  Wait blocks until the long-running operation is completed, returning the response and any errors encountered.

                                  See documentation of Poll for error-handling information.