Where can I obtain written licensing clarification for prerecorded Azure AI Speech audio?

sofiane lallem 0 Reputation points
2026-10-28T20:53:14.22+00:00

Hello,

I'm developing Code de la route Algerien, a free, ad-supported Android app for learning the Algerian driving code.

I would like to generate approximately 356 prerecorded MP3 files using the existing ar-DZ-AminaNeural and ar-DZ-IsmaelNeural voices, then distribute them either inside the APK for offline playback or through my own server/CDN.

Before proceeding, I need written clarification of the applicable licensing terms, including whether this use is permitted in an ad-supported app and whether the generated audio can be stored, copied, embedded, and redistributed.

I also need to know whether accessing Edge Read Aloud through edge-tts is authorized for this purpose.

Could a Microsoft representative direct me to the appropriate licensing or product team for an authoritative answer?

Thank you.

Microsoft Edge | Other | Windows 11
0 comments No comments

2 answers

Sort by: Newest
  1. S.Sengupta 33,091 Reputation points MVP Volunteer Moderator
    2026-10-29T00:27:40.1433333+00:00

    Your plan has a safe route and a risky one.

    Safe route: Azure AI Speech

    TTS output can be used commercially, with no royalty or separate license.

    Generate on a paid (Standard/pay-as-you-go) Speech resource, not free credits or a student subscription.

    Use your own text as input.

    Follow the responsible-use guidelines and disclose that the voices are synthetic.

    Don’t use the output to train or improve a competing TTS service.

    Embedding the MP3s in the APK or serving them from your CDN matches the “offline MP3 in an app” case Microsoft staff have answered.

    Ad revenue counts as commercial use, which those answers allow.

    Amina and Ismael are prebuilt neural voices, so the custom-voice consent rules shouldn’t apply. Check the current voice list for any note on them.

    Risky route: edge-tts

    It uses the Edge “Read Aloud” service the way the browser does.

    It isn’t a documented or supported API.

    I’m not aware of Microsoft authorizing it for commercial use, and Microsoft staff recommend Azure AI Speech instead.

    It has broken without warning when Microsoft changed its access method.

    Don’t build a monetized app on it.

    Before shipping

    Generate all 356 clips in one batch on a paid Azure resource.

    Keep the invoice and the date.

    Save a copy of the current Product Terms and the voice list.

    Add a short in-app note such as “Audio voices are AI-generated.”

    Keep the source text and the generated files together.

    Whether you keep the rights after the subscription ends. Ask Azure support or Microsoft Licensing to confirm in writing.

    This is community guidance, not legal advice.

    Was this answer helpful?

    0 comments No comments

  2. AI answer

    2026-10-28T22:53:48.9633333+00:00

    Generate the files through a billed Azure AI Speech resource, and request case-specific written confirmation by opening an Azure support ticket against that resource; do not use Edge Read Aloud through edge-tts unless Microsoft separately authorizes that workflow in writing.

    Documented Azure Speech position

    ar-DZ-AminaNeural and ar-DZ-IsmaelNeural are listed Azure Speech prebuilt standard neural voices.^1^

    Microsoft Q&A’s accepted licensing guidance states that output from paid Azure Text-to-Speech using prebuilt neural voices may generally be used commercially and redistributed. It also identifies these conditions:

    • Use a billed/paid Azure Speech tier.
    • Hold the necessary rights to all input text.
    • Provide appropriate disclosure that the audio is synthetic or AI-generated.
    • Do not use the output to create, train, or improve a competing or similar TTS service.^2^

    A separate accepted answer expressly addresses commercial voice-over use and says commercial use of generated files is allowed when using a billed Speech resource and your own input content.^3^

    Azure’s official technical documentation confirms that TTS output can be saved as a file and that batch synthesis produces downloadable audio files. Therefore, prerecorded MP3 creation and storage are supported product operations.^4^

    For the proposed app, that guidance supports:

    • Generating the 356 MP3 files with a paid Azure Speech resource.
    • Including them in the APK or hosting them on your server/CDN.
    • Playing them in a free, advertising-supported application.
    • Retaining and copying the generated files as needed for distribution.

    You remain responsible for rights to the driving-code text and for any legally required synthetic-voice disclosure. Microsoft’s official guidance specifically places responsibility for input-content licenses, permissions, and applicable disclosure requirements on the customer.^5^

    Obtain a written, case-specific response

    1. Create or select the paid Azure Speech resource that will generate the files.
    2. In Azure Portal, open that resource.
    3. In its resource menu, select Help → Support + Troubleshooting.
    4. Complete the prompts and select Create a support request.
    5. Select Azure AI Speech as the relevant service where available, and describe the request as a licensing/terms clarification, not a technical fault.
    6. Request an answer by email so the response is retained with the case.

    Opening a ticket requires Owner, Contributor, Support Request Contributor, or equivalent Microsoft.Support/* permission at subscription scope. Azure documents both the resource-menu route and the required roles.^6^

    Suggested ticket text:

    Please confirm in writing whether audio generated through my billed Azure AI Speech resource using the prebuilt voices ar-DZ-AminaNeural and ar-DZ-IsmaelNeural may be stored, copied, embedded in an Android APK, hosted on my CDN, and distributed to users in a free advertising-supported application. Approximately 356 prerecorded MP3 files will be generated. I own or have obtained the necessary rights to the input text. Please identify the governing Product Terms, required disclosures, and any restrictions that apply.

    Microsoft Q&A is a public technical forum, so an accepted answer is useful published guidance but is not a negotiated legal opinion. For contractual certainty, retain the support response together with the Product Terms applicable to the subscription on the synthesis date.

    Edge Read Aloud and edge-tts

    Do not treat Azure Speech rights as authorization to automate Edge Read Aloud. Edge documentation describes Read Aloud as a browser feature that reads webpage content and explains that online voices may use an Azure-powered server-side library; it does not grant rights to capture and redistribute the resulting audio.^7^

    Microsoft Q&A states that no public documentation explicitly grants commercial-use rights for Edge Read Aloud or third-party clients such as edge-tts, and recommends direct Microsoft clarification before proceeding.^8^ The edge-tts project’s open-source license covers the wrapper software; it does not itself license Microsoft’s backend service or generated output.^9^

    Accordingly, the defensible implementation is the official Azure Speech SDK or REST API under the paid Azure subscription. Include the Edge question separately in the support ticket, but absence of a reply or public prohibition should not be interpreted as permission.


    References

    1. Language and voice support for Azure Speech
    2. Can audio generated with Azure Text-to-Speech be publicly redistributed? - Microsoft Q&A
    3. Can I use Azure Text-to-Speech for Commercial Usage?
    4. Transparency note: text to speech
    5. Data, privacy, and security for text to speech
    6. Create an Azure support request
    7. User data and privacy in Microsoft Edge
    8. Commercial Use of Edge Read Aloud Voices via edge-tts - Microsoft Q&A
    9. edge-tts/LICENSE at master · rany2/edge-tts · GitHub
    AI-generated content may be incorrect. Read our transparency notes for more information.

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.