How to connect PHP to Baidu speech emotion recognition interface?

How does PHP connect to Baidu’s voice emotion recognition interface?

1. Overview
Speech emotion recognition is one of the popular research directions in the field of artificial intelligence. It can be used to identify people's emotional states and help companies conduct market research, emotional analysis and other tasks. Baidu Speech Emotion Recognition Interface is a network interface that provides emotional analysis functions. It can perform emotional analysis on input speech and determine the emotion expressed.

This article will introduce how to use PHP to connect to Baidu’s speech emotion recognition interface and provide relevant code examples.

2. Preparation

1. Register a Baidu AI developer account and create a new application. Obtain the corresponding API Key and Secret Key.
2. Install PHP's curl extension and json extension. These two extensions are used to make network requests and process JSON data.

3. Code Example
In the following code example, we will use PHP's curl library to send an HTTP request and call the Baidu speech emotion recognition interface.

<?php
// 定义接口的URL
$url = 'https://aidemo.baidu.com/api/emotion/v1/audio';

// 定义请求头
$headers = array(
    'Content-Type: application/json;charset=UTF-8',
);

// 定义请求参数
$data = array(
    'format' => 'pcm',
    'token' => 'YOUR_TOKEN',
    'cuid' => 'YOUR_CUID',
    'rate' => 16000,
    'channel' => 1,
    'speech' => base64_encode(file_get_contents('YOUR_AUDIO_FILE')),
);

// 发送HTTP POST请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
$result = curl_exec($ch);
curl_close($ch);

// 处理返回结果
if ($result) {
    $result = json_decode($result, true);
    if ($result['err_no'] == 0) {
        // 请求成功
        $emotion = $result['result']['emotion'];
        echo "情感识别结果：$emotion";
    } else {
        // 请求失败
        $err_msg = $result['err_msg'];
        echo "请求失败：$err_msg";
    }
} else {
    echo "请求失败";
}
?>

In the above code, the URL and request header of the Baidu speech emotion recognition interface are first defined. Then, the request parameters are defined, of which YOUR_TOKEN and YOUR_CUID need to be replaced with your own token and cuid, and YOUR_AUDIO_FILE needs to be replaced with the path of the audio file to be recognized. .

Next, send an HTTP POST request, use the curl library to set the request parameters, execute the request and get the return result. Finally, the analysis returns the result. If the recognition is successful, the emotion recognition result is output, otherwise an error message is output.

4. Summary
This article introduces how to use PHP to connect to Baidu speech emotion recognition interface, and provides code examples. By using the Baidu speech emotion recognition interface, we can perform emotional analysis on the input speech, providing help for enterprises in market research, emotional analysis and other work.

The above is the detailed content of How to connect PHP to Baidu speech emotion recognition interface?. For more information, please follow other related articles on the PHP Chinese website!