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Mar 30, 2017
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Update speech usage examples. #3206

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Update speech usage examples.
daspecster Mar 24, 2017
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61 changes: 31 additions & 30 deletions docs/speech-usage.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -77,10 +77,10 @@ Synchronous Recognition
-----------------------

The :meth:`~google.cloud.speech.Client.sync_recognize` method converts speech
data to text and returns alternative text transcriptons.
data to text and returns alternative text transcriptions.

This example uses ``language_code='en-GB'`` to better recognize a dialect from
Great Britian.
Great Britain.

.. code-block:: python

Expand All @@ -89,15 +89,12 @@ Great Britian.
>>> sample = client.sample(source_uri='gs://my-bucket/recording.flac',
... encoding=speech.Encoding.FLAC,
... sample_rate=44100)
>>> results = sample.sync_recognize(
... speech.Encoding.FLAC, 16000,
... source_uri='gs://my-bucket/recording.flac', language_code='en-GB',
... max_alternatives=2)
>>> results = sample.sync_recognize(language_code='en-GB', max_alternatives=2)

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>>> for result in results:
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + alternative.confidence)
... print('confidence: ' + str(alternative.confidence))
====================
transcript: Hello, this is a test
confidence: 0.81
Expand All @@ -120,7 +117,7 @@ Example of using the profanity filter.
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + alternative.confidence)
... print('confidence: ' + str(alternative.confidence))
====================
transcript: Hello, this is a f****** test
confidence: 0.81
Expand All @@ -143,7 +140,7 @@ words to the vocabulary of the recognizer.
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + alternative.confidence)
... print('confidence: ' + str(alternative.confidence))
====================
transcript: Hello, this is a test
confidence: 0.81
Expand All @@ -168,11 +165,15 @@ speech data to possible text alternatives on the fly.
... sample = client.sample(stream=stream,
... encoding=speech.Encoding.LINEAR16,
... sample_rate=16000)
... results = list(sample.streaming_recognize())
>>> print(results[0].alternatives[0].transcript)
'hello'
>>> print(results[0].alternatives[0].confidence)
0.973458576
... results = sample.streaming_recognize()
... for result in results:
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + str(alternative.confidence))
====================
transcript: hello thank you for using Google Cloud platform
confidence: 0.927983105183


By default the API will perform continuous recognition
Expand All @@ -191,13 +192,15 @@ See: `Single Utterance`_
... sample = client.sample(stream=stream,
... encoding=speech.Encoding.LINEAR16,
... sample_rate=16000)
... responses = sample.streaming_recognize(single_utterance=True)
... results = list(responses)
>>> print(results[0].alternatives[0].transcript)
hello
>>> print(results[0].alternatives[0].confidence)
0.96523453546

... results = sample.streaming_recognize(single_utterance=True)
... for result in results:
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + str(alternative.confidence))
====================
transcript: testing a pause
confidence: 0.933770477772

If ``interim_results`` is set to :data:`True`, interim results
(tentative hypotheses) may be returned as they become available.
Expand All @@ -210,27 +213,25 @@ If ``interim_results`` is set to :data:`True`, interim results
... sample = client.sample(stream=stream,
... encoding=speech.Encoding.LINEAR16,
... sample_rate=16000)
... for results in sample.streaming_recognize(interim_results=True):
... print('=' * 20)
... print(results[0].alternatives[0].transcript)
... print(results[0].alternatives[0].confidence)
... print(results[0].is_final)
... print(results[0].stability)
... results = sample.streaming_recognize(interim_results=True):
... for result in results:
... for alternative in result.alternatives:
... print('=' * 20)
... print('transcript: ' + alternative.transcript)
... print('confidence: ' + str(alternative.confidence))
... print('is_final:' + str(result.is_final))
====================
'he'
None
False
0.113245
====================
'hell'
None
False
0.132454
====================
'hello'
0.973458576
True
0.982345


.. _Single Utterance: https://cloud.google.com/speech/reference/rpc/google.cloud.speech.v1beta1#streamingrecognitionconfig
Expand Down