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<?php

/**

* Copyright 2016 Google Inc.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

# [START speech_quickstart]

# Includes the autoloader for libraries installed with composer

require __DIR__ . '/vendor/autoload.php';

# Imports the Google Cloud client library

use Google\Cloud\Speech\V1\SpeechClient;

use Google\Cloud\Speech\V1\RecognitionAudio;

use Google\Cloud\Speech\V1\RecognitionConfig;

use Google\Cloud\Speech\V1\RecognitionConfig\AudioEncoding;

# The name of the audio file to transcribe

$audioFile = __DIR__ . '/test/data/audio32KHz.raw';

# get contents of a file into a string

$content = file_get_contents($audioFile);

# set string as audio content

$audio = (new RecognitionAudio())

->setContent($content);

# The audio file's encoding, sample rate and language

$config = new RecognitionConfig([

'encoding' => AudioEncoding::LINEAR16,

'sample_rate_hertz' => 32000,

'language_code' => 'en-US'

]);

# Instantiates a client

$client = new SpeechClient();

# Detects speech in the audio file

$response = $client->recognize($config, $audio);

# Print most likely transcription

foreach ($response->getResults() as $result) {

$alternatives = $result->getAlternatives();

$mostLikely = $alternatives[0];

$transcript = $mostLikely->getTranscript();

printf('Transcript: %s' . PHP_EOL, $transcript);

}

$client->close();

# [END speech_quickstart]