本頁說明如何設定辨識器,從預設的可能語言清單中,自動辨識音訊檔案中使用的語言。
有時您可能不確定錄音內容包含何種語言。舉例來說,如果您是在擁有多種官方語言的國家/地區發佈服務、應用程式或產品,收到的音訊內容可能來自各種不同語言的使用者。如此一來,如果要替語音轉錄要求指定單一語言代碼,難度可能就更高了。
多語言辨識
Cloud Speech-to-Text 可讓您指定音訊資料可能包含的一組語言。建立 Recognizer 或傳送辨識要求時,您可以在 language_codes 欄位中,提供音訊資料可能包含的一或多種語言。如果要求中包含多種語言,Cloud Speech-to-Text 會嘗試使用您提供的替代語言清單中,最適合的語言轉錄音訊。接著,Cloud Speech-to-Text 會為轉錄結果加上預測語言代碼標籤。
此功能適用於需要對語音指令或搜尋指令等簡短陳述式,執行語音轉錄的應用程式。你最多可以列出三種語言,供系統自動辨識。
事前準備
- 登入 Google Cloud 帳戶。如果您是 Google Cloud新手,歡迎 建立帳戶,親自評估產品在實際工作環境中的成效。新客戶還能獲得價值 $300 美元的免費抵免額,可用於執行、測試及部署工作負載。
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In the Google Cloud console, on the project selector page, select or create a Google Cloud project.
Roles required to select or create a project
- Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
-
Create a project: To create a project, you need the Project Creator role
(
roles/resourcemanager.projectCreator), which contains theresourcemanager.projects.createpermission. Learn how to grant roles.
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Verify that billing is enabled for your Google Cloud project.
Enable the Speech-to-Text APIs.
Roles required to enable APIs
To enable APIs, you need the Service Usage Admin IAM role (
roles/serviceusage.serviceUsageAdmin), which contains theserviceusage.services.enablepermission. Learn how to grant roles.-
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 column 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.
Go to IAM - Select the project.
- Click Grant access.
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In the New principals field, enter your user identifier. This is typically the email address for a Google Account.
- Click Select a role, then search for the role.
- To grant additional roles, click Add another role and add each additional role.
- Click Save.
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安裝 Google Cloud CLI。
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若您採用的是外部識別資訊提供者 (IdP),請先使用聯合身分登入 gcloud CLI。
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執行下列指令,初始化 gcloud CLI:
gcloud init -
In the Google Cloud console, on the project selector page, select or create a Google Cloud project.
Roles required to select or create a project
- Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
-
Create a project: To create a project, you need the Project Creator role
(
roles/resourcemanager.projectCreator), which contains theresourcemanager.projects.createpermission. Learn how to grant roles.
-
Verify that billing is enabled for your Google Cloud project.
Enable the Speech-to-Text APIs.
Roles required to enable APIs
To enable APIs, you need the Service Usage Admin IAM role (
roles/serviceusage.serviceUsageAdmin), which contains theserviceusage.services.enablepermission. Learn how to grant roles.-
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 column to see whether the list of roles includes the required roles.
Grant the roles
-
In the Google Cloud console, go to the IAM page.
Go to IAM - Select the project.
- Click Grant access.
-
In the New principals field, enter your user identifier. This is typically the email address for a Google Account.
- Click Select a role, then search for the role.
- To grant additional roles, click Add another role and add each additional role.
- Click Save.
-
-
安裝 Google Cloud CLI。
-
若您採用的是外部識別資訊提供者 (IdP),請先使用聯合身分登入 gcloud CLI。
-
執行下列指令,初始化 gcloud CLI:
gcloud init -
如果您使用本機殼層,請為使用者帳戶建立本機驗證憑證:
gcloud auth application-default login
如果您使用 Cloud Shell,則不需要執行這項操作。
如果系統傳回驗證錯誤,且您使用外部識別資訊提供者 (IdP),請確認您已 使用聯合身分登入 gcloud CLI。
用戶端程式庫可以使用應用程式預設憑證,輕鬆向 Google API 進行驗證,然後傳送要求給這些 API。有了應用程式預設憑證,您就能在本機測試應用程式並部署,不必變更基礎程式碼。詳情請參閱「 進行驗證以使用用戶端程式庫」一文。
此外,請務必安裝用戶端程式庫。
在音訊語音轉錄要求中啟用語言辨識
以下是對本機音訊檔案執行同步語音辨識的範例,支援多種語言。
Python
清除所用資源
為避免系統向您的 Google Cloud 帳戶收取本頁面所用資源的費用,請按照下列步驟操作。
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選用:撤銷您建立的驗證憑證,並刪除本機憑證檔案。
gcloud auth application-default revoke
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選用:從 gcloud CLI 撤銷憑證。
gcloud auth revoke
控制台
gcloud
刪除 Google Cloud 專案:
gcloud projects delete PROJECT_ID