Steps and precautions for connecting Baidu voice wake-up interface with PHP

Steps and precautions for PHP to implement docking with Baidu voice wake-up interface

Introduction: Voice technology plays an increasingly important role in modern social life. Baidu Voice Wake-up Interface is a powerful voice recognition technology that can help developers implement customized wake-up words to facilitate users to interact through voice. This article will introduce how to use PHP language to connect to Baidu voice wake-up interface, and provide relevant code examples.

1. Preparation

1. Register Baidu developer account
   Register a developer account on Baidu open platform, create a new application, and obtain API Key and Secret Key .
2. Install PHP environment
   Make sure that the PHP environment has been installed and the cURL extension is enabled.

2. Obtain Access Token

Before using the Baidu voice wake-up interface, you need to obtain an Access Token.

<?php
$clientId = 'your_client_id';
$clientSecret = 'your_client_secret';

$url = 'https://aip.baidubce.com/oauth/2.0/token';
$data = array(
    'grant_type' => 'client_credentials',
    'client_id' => $clientId,
    'client_secret' => $clientSecret
);

$options = array(
    'http' => array(
        'method' => 'POST',
        'header' => 'Content-Type: application/x-www-form-urlencoded',
        'content' => http_build_query($data),
    ),
);

$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);

$accessToken = $result['access_token'];
?>

In the above code, $clientId and $clientSecret need to be replaced with actual values.

3. Perform voice wake-up

1. Upload wake-up word file
   Create a new wake-up word file on Baidu open platform and upload the file to Baidu server. After the upload is completed, the ID of the wake word file can be obtained.
2. Start voice wake-up
   Use the following code, combined with the obtained Access Token and wake-up word file ID, to perform voice wake-up through the Baidu voice wake-up interface.

<?php
$accessToken = 'your_access_token';
$deviceId = 'your_device_id';
$wordListId = 'your_word_list_id';

$url = 'https://vop.baidu.com/server_api';
$data = array(
    'access_token' => $accessToken,
    'device_id' => $deviceId,
    'wordlist_id' => $wordListId,
);

$options = array(
    'http' => array(
        'header' => 'Content-Type: application/json',
        'method' => 'POST',
        'content' => json_encode($data),
    ),
);

$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);

if ($result['err_no'] == 0) {
    // 语音唤醒成功
} else {
    // 语音唤醒失败
}
?>

In the above code, $accessToken needs to be replaced with the previously obtained Access Token; $deviceId and $wordListId should be replaced with the actual device ID and wake word file ID.

Note:

1. When using the Baidu voice wake-up interface, you should ensure that the server can access the Baidu server normally. If there are firewalls or other network restrictions, please configure them appropriately.
2. Access Token has a validity period. It is recommended to obtain it again before each request to avoid expiration and request failure.
3. During the development process, you should carefully read the voice wake-up interface document of Baidu Open Platform to understand the usage and parameter configuration of the interface.
4. In order to ensure the stability and security of the interface, it is recommended to perform necessary parameter verification and error handling on the request.

Summary: This article introduces how to use PHP language to connect to Baidu voice wake-up interface. By obtaining the Access Token and using the wake word file ID, we can effectively implement the voice wake-up function. In actual development, we need to pay attention to some details, such as network access, Access Token validity period and error handling. I hope this article can help everyone understand the use of Baidu voice wake-up interface.

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