CODEWITHSUNDEEP
google-cloud-speech
Dan Holevoet
Dan Holevoet

Reputation: 9183

What types of audio are supported by Cloud Speech API?

There are a lot of audio formats (e.g., mp3, m4a), sources (e.g., dictation, commands, phone calls, meetings) and devices (e.g., phones, PCs, IoT devices). Which ones work best with Cloud Speech API?

Upvotes: 0

Views: 916

Answers (1)

Marcin Orlowski
Marcin Orlowski

Reputation: 75629

Which ones work best with Cloud Speech API?

Supported ones shall work best:

  • LINEAR16 Uncompressed 16-bit signed little-endian samples. This is the only encoding that may be used by speech.asyncrecognize.
  • FLAC This is the recommended encoding for speech.syncrecognize and StreamingRecognize because it uses lossless compression; therefore recognition accuracy is not compromised by a lossy codec.
  • MULAW 8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.
  • AMR Adaptive Multi-Rate Narrowband codec. sampleRate must be 8000 Hz.
  • AMR_WB Adaptive Multi-Rate Wideband codec. sampleRate must be 16000 Hz.

https://cloud.google.com/speech/reference/rest/v1beta1/RecognitionConfig#AudioEncoding

Upvotes: 4

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