<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 12.0.0 -",
    "tvOS: 17.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "PHASE",
  "identifier" : "/documentation/PHASE/PHASEEnvelopeDistanceModelParameters/init(envelope:)",
  "metadataVersion" : "0.1.0",
  "role" : "Initializer",
  "symbol" : {
    "kind" : "Initializer",
    "modules" : [
      "PHASE"
    ],
    "preciseIdentifier" : "c:objc(cs)PHASEEnvelopeDistanceModelParameters(im)initWithEnvelope:"
  },
  "title" : "init(envelope:)"
}
-->

# init(envelope:)

Creates the distance model parameters with an envelope.

```
init(envelope: PHASEEnvelope)
```

## Parameters

`envelope`

The envelope that shapes sound dissipation over distance.

---

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)