php cuRL 响应 "unable to transcode data stream audio/flac -> audio/x-float-array" - IBM Watson 语音转文本 API

Question

我不太了解如何使用 cURL.I 我正在尝试使用 IBM Watson API 将语音转换为文本。当我尝试不使用参数进行转换时（翻译英文音频文件），我得到了没有任何错误的响应。

但是当我添加

curl_setopt($ch, CURLOPT_POSTFIELDS, array(
      'model'=>'ja-JP_NarrowbandModel'
))

它returns

{ "code_description": "Bad Request", "code": 400, "error": "unable to 
transcode data stream audio/flac -> audio/x-float-array " }

我不确定是我的语法有问题还是其他地方出了问题。

我阅读了以下文档：https://console.bluemix.net/docs/services/speech-to-text/http.html#http

<?php
$ch = curl_init();
$file = file_get_contents('audio-file.flac');
curl_setopt($ch, CURLOPT_URL, 'https://stream.watsonplatform.net/speech-to-text/api/v1/recognize');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $file);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_USERPWD, 'apikey' . ':' . 'MY_API_HERE');
$headers = array();
$headers[] = 'Content-Type: audio/flac';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POSTFIELDS, array(
'model'=>'ja-JP_NarrowbandModel'
));
$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);
print_r($result);

Answer 1

您正在设置 CURLOPT_POSTFIELDS 两次，一次使用您的文件内容，第二次使用包含 'model'=>'ja-JP_NarrowbandModel'.

的数组

根据the documentation，您可以将模型作为查询参数传递。

尝试这样的事情（未测试）：

<?php

$file = file_get_contents('audio-file.flac');

$url = 'https://stream.watsonplatform.net/speech-to-text/api/v1/recognize';
$model = 'ja-JP_NarrowbandModel';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url . '?model=' . $model);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $file);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_USERPWD, 'apikey' . ':' . 'MY_API_HERE');

$headers = array();
$headers[] = 'Content-Type: audio/flac';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);
print_r($result);

php cuRL 响应 "unable to transcode data stream audio/flac -> audio/x-float-array" - IBM Watson 语音转文本 API

php cuRL response "unable to transcode data stream audio/flac -> audio/x-float-array" - IBM Watson Speech to text API

php

curl

ibm-watson