关于Bing Speech API处理WAV文件及语音转文字时长统计的技术问询

Hey there! Let's tackle your questions about the Bing Speech API (which has now evolved into part of Azure Speech Service) clearly:

1. WAV File Support for Speech-to-Text #

Absolutely, the Bing Speech API (and its successor Azure Speech Service) fully supports speech-to-text processing for single-sentence WAV files. As long as your WAV file follows standard audio specifications—like PCM encoding, 16kHz/8kHz sampling rate, 16-bit depth, and mono channel—it will work seamlessly with the API.

2. Word Duration & Pause Statistics Output #

Yes, you can get the detailed timing data you're looking for, though the API won't output it in exactly the formatted string you provided out of the box. Instead, it returns structured recognition results with word-level timing offsets, which you can use to calculate word durations, pause lengths, and total duration easily.

Here's how it works:

• When making your API request, enable word-level timing (this is usually done by setting a parameter like includeWordLevelTiming=true in your request, depending on the SDK or REST endpoint you're using).
• The response will include for each recognized word:
  • A start time (offset from the beginning of the audio)
  • An end time (when the word finishes)
• You can derive the metrics you need from these values:
  • Word duration = end time - start time
  • Pause duration = next word's start time - previous word's end time
  • Total duration = end time of the last recognized word (or the full audio file duration, if you prefer)

For your example input "This is linda", here's how you'd map the API's structured data to your desired output:

word: this duration: 5ms
word: is duration: 2ms
pause duration: 2ms
word: linda duration: 5ms
total duration : 12ms

You just need to parse the API's response, compute these values, and format them into the string style you want.

内容的提问来源于stack exchange，提问作者kumar