CODEWITHSUNDEEP
azurevoice-recognitionrate-limiting
mebaad
mebaad

Reputation: 11

Microsoft Azure cognition services - Speaker Recognition - Rate Limit

I use Microsoft Azure and the cognition service to be able to use the Speaker Recognition API. I have a subscription "Pay as you go" with the Standard Pricing Tier (5 calls per second) . I use Unity to make the voice recording and to send the audio to the server.

Every 5 seconds, I send the audio to the server inside the update function of the C# script. But around 30 seconds of speech, I got the error 429 : code: RateLimitExceeded, message : Rate limit is exceeded. Try again later.

If anyone use it, do you know why I got this response from the server, while I have a subscription to avoid this limit.

I joined the Microsoft assistant, and they told me that the subscription is active, but I don't see any direct debit.

Upvotes: 1

Views: 255

Answers (1)

Karishma Tiwari - MSFT
Karishma Tiwari - MSFT

Reputation: 1545

If you look at the note in the readme section here https://github.com/Microsoft/Cognitive-SpeakerRecognition-Windows,

Note: Make sure that the number of requests per minute resulting from tunning the step size won't exceed your subscription's rate limit.

For example, applying a step size of 1 on an audio file of size 1 minute will result in 60 requests. Applying a step size of 2 on the same audio file will result in 30 requests. For your convenience, we have provided sample audios to enroll 2 speakers and a sample audio for streaming. These audios are found under SpeakerRecognition\Windows\Streaming\SPIDStreamingAPI-WPF-Samples\SampleAudios.

Also, according to the API link on https://azure.microsoft.com/en-us/services/cognitive-services/speaker-recognition/ The audio file format must meet the following requirements:

  1. Container - WAV
  2. Encoding - PCM
  3. Rate - 16K
  4. Sample Format - 16 bit
  5. Channels - Mono

Upvotes: 1

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