请求协助解决Google Speech-to-Text采样率配置无效的400错误

Looks like that error is pointing to a simple but critical missing piece in your request. Let's break down what's going wrong and fix it right away:

1. The Root Issue #

Google's Speech-to-Text API requires you to explicitly define your audio's sample rate in the config object—even if you're using a standard rate like 16000 Hz. Your current request doesn't include the sampleRateHertz field, so the API can't properly parse your 16kHz WAV file.

Also, there's a tiny syntax issue with your enableAutomaticPunctuation value: you passed it as a string "true" instead of a JSON boolean true (no quotes). While this isn't causing your current error, it could lead to unexpected behavior later, so we'll fix that too.

2. Corrected Request JSON #

Here's the revised version of your request with both fixes applied:

{
  "config": {
    "enableAutomaticPunctuation": true,
    "encoding": "LINEAR16",
    "languageCode": "en-US",
    "model": "default",
    "sampleRateHertz": 16000
  },
  "audio": {
    "content": "QzpcU3BlZWNoVG9UZXh0XGVuZ2xpc2hcUENNXEVORy1DUk0tRE9XTlRJTUUud2F2"
  }
}

3. Quick Reminders #

• Double-check that sampleRateHertz exactly matches your audio's actual sample rate (16000 Hz in your case). Mismatched values will trigger the same error.
• JSON boolean values (true/false) should never be wrapped in quotes—use them as raw boolean types.
• Your encoding: "LINEAR16" is perfect for your PCM 16-bit mono audio, so no changes needed there.

Give this updated request a shot, and it should resolve that 400 error you're hitting.

内容的提问来源于stack exchange，提问作者Tarun