本页面介绍了如何使用 REST 接口和 curl
命令向 Speech-to-Text 发送语音识别请求。
Speech-to-Text 能够将 Google 语音识别技术轻松集成到开发者应用中。您可以向 Speech-to-Text API 发送音频数据,然后该 API 会返回该音频文件的文字转录。如需详细了解该服务,请参阅 Speech-to-Text 基础知识。
准备工作
- Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.
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In the Google Cloud console, on the project selector page, select or create a Google Cloud project.
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Make sure that billing is enabled for your Google Cloud project.
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Enable the Speech-to-Text APIs.
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Make sure that you have the following role or roles on the project: Cloud Speech Administrator
Check for the roles
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In the Google Cloud console, go to the IAM page.
Go to IAM - Select the project.
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In the Principal column, find all rows that identify you or a group that you're included in. To learn which groups you're included in, contact your administrator.
- For all rows that specify or include you, check the Role colunn to see whether the list of roles includes the required roles.
Grant the roles
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In the Google Cloud console, go to the IAM page.
进入 IAM - 选择项目。
- 点击 授予访问权限。
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在新的主账号字段中,输入您的用户标识符。 这通常是 Google 账号的电子邮件地址。
- 在选择角色列表中,选择一个角色。
- 如需授予其他角色,请点击 添加其他角色,然后添加其他各个角色。
- 点击 Save(保存)。
- Install the Google Cloud CLI.
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To initialize the gcloud CLI, run the following command:
gcloud init
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In the Google Cloud console, on the project selector page, select or create a Google Cloud project.
-
Make sure that billing is enabled for your Google Cloud project.
-
Enable the Speech-to-Text APIs.
-
Make sure that you have the following role or roles on the project: Cloud Speech Administrator
Check for the roles
-
In the Google Cloud console, go to the IAM page.
Go to IAM - Select the project.
-
In the Principal column, find all rows that identify you or a group that you're included in. To learn which groups you're included in, contact your administrator.
- For all rows that specify or include you, check the Role colunn to see whether the list of roles includes the required roles.
Grant the roles
-
In the Google Cloud console, go to the IAM page.
进入 IAM - 选择项目。
- 点击 授予访问权限。
-
在新的主账号字段中,输入您的用户标识符。 这通常是 Google 账号的电子邮件地址。
- 在选择角色列表中,选择一个角色。
- 如需授予其他角色,请点击 添加其他角色,然后添加其他各个角色。
- 点击 Save(保存)。
- Install the Google Cloud CLI.
-
To initialize the gcloud CLI, run the following command:
gcloud init
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发出音频转录请求
请使用以下代码示例向 Speech-to-Text API 发送 recognize
REST 请求。
运行以下命令以创建 JSON 文件作为请求的输入。将
/full/path/to/audio/file.wav
替换为您要转写的音频文件的路径:echo "{ \"config\": { \"auto_decoding_config\": {}, \"language_codes\": [\"en-US\"], \"model\": \"long\" }, \"content\": \"$(base64 -w 0 /full/path/to/audio/file.wav | sed 's/+/-/g; s/\//_/g')\" }" > /tmp/data.txt
使用
curl
发出recognize
请求:curl -X POST -H "Content-Type: application/json; charset=utf-8" \ -H "Authorization: Bearer $(gcloud auth print-access-token)" \ -d @/tmp/data.txt \ https://speech.googleapis.com/v2/projects/PROJECT_ID/locations/global/recognizers/_:recognize
您应该会看到如下所示的响应:
{ "results": [ { "alternatives": [ { "transcript": "how old is the Brooklyn Bridge", "confidence": 0.98267895 } ] } ] }
您向 Speech-to-Text 发送了第一个请求。
清理
为避免因本页中使用的资源导致您的 Google Cloud 账号产生费用,请按照以下步骤操作。
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Optional: Revoke the authentication credentials that you created, and delete the local credential file.
gcloud auth application-default revoke
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Optional: Revoke credentials from the gcloud CLI.
gcloud auth revoke
控制台
gcloud
Delete a Google Cloud project:
gcloud projects delete PROJECT_ID