diff --git a/objects/sigmf-expanded-recording/definition.json b/objects/sigmf-expanded-recording/definition.json
new file mode 100644
index 0000000..a9dbdae
--- /dev/null
+++ b/objects/sigmf-expanded-recording/definition.json
@@ -0,0 +1,136 @@
+{
+    "attributes": {
+        "iq-sample": {
+            "description": "Binary file of IQ samples",
+            "disable_correlation": true,
+            "misp-attribute": "attachment",
+            "multiple": true,
+            "ui-priority": 0
+        },
+        "datatype": {
+            "description": "",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "sample_rate": {
+            "description": "The sample rate of the signal in samples per second.",
+            "disable_correlation": true,
+            "misp-attribute": "float",
+            "ui-priority": 0
+        },
+        "version": {
+            "description": "The version of the SigMF specification used to create the Metadata file.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "num_channels": {
+            "description": "Total number of interleaved channels in the Dataset file. If omitted, this defaults to one.",
+            "disable_correlation": true,
+            "misp-attribute": "counter",
+            "ui-priority": 0
+        },
+        "sha512": {
+            "description": "The SHA512 hash of the Dataset file associated with the SigMF file.",
+            "disable_correlation": true,
+            "misp-attribute": "sha512",
+            "ui-priority": 0
+        },
+        "offset": {
+            "description": "The index number of the first sample in the Dataset. If not provided, this value defaults to zero. Typically used when a Recording is split over multiple files. All sample indices in SigMF are absolute, and so all other indices referenced in metadata for this recording SHOULD be greater than or equal to this value.",
+            "disable_correlation": true,
+            "misp-attribute": "counter",
+            "ui-priority": 0
+        },
+        "description": {
+            "description": "A text description of the SigMF Recording.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "author": {
+            "description": "A text identifier for the author potentially including name, handle, email, and/or other ID like Amateur Call Sign.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "meta_doi": {
+            "description": "The registered DOI (ISO 26324) for a Recording's Metadata file.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "data_doi": {
+            "description": "The registered DOI (ISO 26324) for a Recording's Dataset file.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "recorder": {
+            "description": "The name of the software used to make this SigMF Recording.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "license": {
+            "description": "A URL for the license document under which the Recording is offered.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "hw": {
+            "description": "A text description of the hardware used to make the Recording.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "dataset": {
+            "description": "The full filename of the Dataset file this Metadata file describes.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "trailing_bytes": {
+            "description": "The number of bytes to ignore at the end of a Non-Conforming Dataset file.",
+            "disable_correlation": true,
+            "misp-attribute": "counter",
+            "ui-priority": 0
+        },
+        "metadata_only": {
+            "description": "Indicates the Metadata file is intentionally distributed without the Dataset.",
+            "disable_correlation": true,
+            "misp-attribute": "boolean",
+            "ui-priority": 0
+        },
+        "geolocation_lat": {
+            "description": "The location of the Recording system (latitude).",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "geolocation_long": {
+            "description": "The location of the Recording system (longitude).",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "geolocation_alt": {
+            "description": "The location of the Recording system (altitude).",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        },
+        "collection": {
+            "description": "The base filename of a collection with which this Recording is associated.",
+            "disable_correlation": true,
+            "misp-attribute": "text",
+            "ui-priority": 0
+        }
+    },
+    "description": "An object representing a single IQ/RF sample in the Signal Metadata Format Specification (SigMF)",
+    "meta-category": "misc",
+    "name": "sigmf-expanded-recording",
+    "uuid": "f1c2c4e1-d3bf-46b1-b34d-f5e9544a4795",
+    "version": 1
+}
\ No newline at end of file
diff --git a/objects/sigmf-recording/definition.json b/objects/sigmf-recording/definition.json
new file mode 100644
index 0000000..afe313e
--- /dev/null
+++ b/objects/sigmf-recording/definition.json
@@ -0,0 +1,25 @@
+{
+    "attributes": {
+        "SigMF-meta": {
+            "description": "Metadata file in SigMF format (.sigmf-meta)",
+            "disable_correlation": true,
+            "misp-attribute": "attachment",
+            "ui-priority": 0
+        },
+        "SigMF-data": {
+            "description": "Binary file of IQ or RF samples (.sigmf-data)",
+            "disable_correlation": true,
+            "misp-attribute": "attachment",
+            "multiple": true,
+            "ui-priority": 1
+        }
+    },
+    "description": "An object representing  a single IQ/RF sample in the Signal Metadata Format Specification (SigMF)",
+    "meta-category": "misc",
+    "name": "sigmf-recording",
+    "required": [
+        "SigMF-meta"
+    ],
+    "uuid": "0ca64648-38ca-4e48-99ce-2e655cdac02c",
+    "version": 1
+}
\ No newline at end of file