The error message "Error: You're sending frequent requests to server. Retry the operation later or switch to a standard paid tier" suggests that you are hitting a usage limit on the text to speech service. The Azure Cognitive Services Text to Speech service has usage limits based on the pricing tier you have subscribed to, which could be a free tier or a paid tier.
If you are using the free tier, there are usage limits on the number of requests per second and per month. If you exceed these limits, you may receive this error message. If you are using a paid tier, you may have exceeded the usage limits of your subscription. In either case, you will need to either wait for some time before trying again or switch to a higher tier to get more requests per month.
To resolve this issue, you can try the following steps:
- Check your current pricing tier: Go to the Azure portal and check the pricing tier of your Text to Speech resource. If you are using the free tier, check if you have exceeded the monthly usage limit.
- Wait for some time: If you are hitting the usage limit, you can wait for some time and try again later when the usage limit resets.
- Upgrade to a higher tier: If you are consistently hitting the usage limit, you may want to consider upgrading to a higher pricing tier that offers more requests per month.
- Optimize your application: If you are using the Text to Speech service frequently, you may want to optimize your application to reduce the number of requests to the service. For example, you can cache the audio files locally so that you don't need to generate them again.
- Please mark this as helpful if it helps you :-)