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HomeAPI ReferenceVoice AgentSpeech-to-TextText-to-SpeechIntelligenceSelf-Hosted Deployments
    • Getting Started with Speech to Text
  • Pre-Recorded Audio
    • Getting Started
    • Feature Overview
    • Template Apps
  • Streaming Audio
    • Compare Flux to Nova-3
  • Models and Languages
    • Models & Languages Overview
    • Languages Support
    • Language Detection
    • Multilingual Codeswitching
    • Model Options
    • Version
  • Formatting
    • Speaker Diarization
    • Dictation
    • Filler Words
    • Measurements
    • Numerals
    • Paragraphs
    • Profanity Filtering
    • Punctuation
    • Redaction
    • Smart Formatting
    • Supported Entity Types
    • Utterances
    • Utterance Split
  • Custom Vocabulary
    • Find and Replace
    • Keyterm Prompting
    • Keywords
    • Search
  • Media Input Settings
    • Channels
    • Encoding
    • Multichannel
    • Sample Rate
  • Results Processing
    • Understanding Word Confidence Scores
    • STT Callback
    • STT Tagging
    • Extra Metadata
  • Migrating
    • Migrating From Amazon Web Services (AWS) Transcribe to Deepgram
    • Migrating From Google Speech-to-Text (STT) to Deepgram
    • Migrating From OpenAI Whisper to Deepgram
    • Migrating from AssemblyAI Speech-to-Text to Deepgram
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  • Enable Feature
Media Input Settings

Sample Rate

Sample Rate allows you to specify the sample rate of your submitted audio.
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Understanding Word Confidence Scores

Use word-level confidence scores to detect transcription errors and assess transcript quality.

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Built with

sample_rate int32

Pre-recorded Streaming:NovaStreaming:Flux All available languages

Enable Feature

Sample Rate is required when using the Encoding feature for non-containerized/raw audio. For containerized audio formats, both sample_rate and encoding should be omitted.

To enable Sample Rate, when you call Deepgram’s API, add a sample_rate parameter in the query string and set it to the sample rate of your submitted audio.

sample_rate=SAMPLE_RATE_VALUE

cURL
$curl \
>  --request POST \
>  --header 'Authorization: Token YOUR_DEEPGRAM_API_KEY' \
>  --header 'Content-Type: audio/mp3' \
>  --data-binary @youraudio.mp3 \
>  --url 'https://api.deepgram.com/v1/listen?sample_rate=8000&encoding=linear16'

When submitting audio encoded with the Adaptive Multi-Rate (AMR) codec, you must submit specific Sample Rate values:

  • amr-nb: AMR narrowband codec. When using this option, you must specify sample_rate=8000 (encoding=amr-nb&sample_rate=8000).
  • amr-wb: AMR wideband codec. When using this option, you must also specify sample_rate=16000 (encoding=amr-wb&sample_rate=16000).