<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "SensorKit",
  "identifier" : "/documentation/SensorKit/SRSensor/siriSpeechMetrics",
  "metadataVersion" : "0.1.0",
  "role" : "Type Property",
  "symbol" : {
    "kind" : "Type Property",
    "modules" : [
      "SensorKit"
    ],
    "preciseIdentifier" : "c:@SRSensorSiriSpeechMetrics"
  },
  "title" : "siriSpeechMetrics"
}
-->

# siriSpeechMetrics

A sensor that provides data describing a user’s speech to Siri.

```
static let siriSpeechMetrics: SRSensor
```

## Discussion

The [`sample`](/documentation/SensorKit/SRFetchResult/sample) type for this sensor is [`SRSpeechMetrics`](/documentation/SensorKit/SRSpeechMetrics).

The metrics provide details about the user’s voice, such as tenor, pitch, cadence, and speech timing, which includes words per minute and the average duration between words.

This sensor doesn’t provide raw audio data. For user privacy, SensorKit removes any transcript strings from the result.

You need to provide a reason to analyze speech by adding the <doc://com.apple.documentation/documentation/BundleResources/Information-Property-List/NSSensorKitUsageDetail/SRSensorUsageSpeechMetrics> dictionary to the <doc://com.apple.documentation/documentation/BundleResources/Information-Property-List/NSSensorKitUsageDetail> key in the information property list.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)