diff --git a/src/osekit/public_api/export_analysis.py b/src/osekit/public_api/export_analysis.py
index 05de0859..c435743e 100644
--- a/src/osekit/public_api/export_analysis.py
+++ b/src/osekit/public_api/export_analysis.py
@@ -6,13 +6,17 @@
 import logging
 import os
 from pathlib import Path
+from typing import TYPE_CHECKING
 
 from osekit import config, setup_logging
 from osekit.config import global_logging_context as glc
 from osekit.core_api.audio_dataset import AudioDataset
-from osekit.core_api.spectro_dataset import SpectroDataset
 from osekit.public_api.analysis import AnalysisType
 from osekit.public_api.dataset import Dataset
+from osekit.utils.deserialization import deserialize_spectro_or_ltas_dataset
+
+if TYPE_CHECKING:
+    from osekit.core_api.spectro_dataset import SpectroDataset
 
 
 def write_analysis(
@@ -314,7 +318,7 @@ def main() -> None:
         else None
     )
     sds = (
-        SpectroDataset.from_json(Path(args.sds_json))
+        deserialize_spectro_or_ltas_dataset(path=Path(args.sds_json))
         if args.sds_json.lower() != "none"
         else None
     )
diff --git a/src/osekit/utils/deserialization.py b/src/osekit/utils/deserialization.py
new file mode 100644
index 00000000..37957f24
--- /dev/null
+++ b/src/osekit/utils/deserialization.py
@@ -0,0 +1,25 @@
+from pathlib import Path
+
+from osekit.core_api.ltas_dataset import LTASDataset
+from osekit.core_api.spectro_dataset import SpectroDataset
+
+
+def deserialize_spectro_or_ltas_dataset(path: Path) -> SpectroDataset | LTASDataset:
+    """Return a ``LTASDataset`` or a ``SpectroDataset`` from the specified json file.
+
+    Parameters
+    ----------
+    path: Path
+        Path to the json file.
+
+    Returns
+    -------
+    SpectroDataset | LTASDataset
+        The deserialized ``LTASDataset`` if ``nb_time_bins`` is set to an integer, else
+        the deserialized ``SpectroDataset``.
+
+    """
+    try:
+        return LTASDataset.from_json(file=path)
+    except KeyError:
+        return SpectroDataset.from_json(file=path)
diff --git a/tests/test_export_analysis.py b/tests/test_export_analysis.py
index 7b606ee2..de3655f1 100644
--- a/tests/test_export_analysis.py
+++ b/tests/test_export_analysis.py
@@ -8,7 +8,6 @@
 
 from osekit import config
 from osekit.core_api.audio_dataset import AudioDataset
-from osekit.core_api.spectro_dataset import SpectroDataset
 from osekit.public_api import export_analysis
 from osekit.public_api.export_analysis import create_parser
 from osekit.utils.job import Job
@@ -164,7 +163,11 @@ def mock_sds_json(path: Path) -> Path:
         calls["sds_json"] = path
         return path
 
-    monkeypatch.setattr(SpectroDataset, "from_json", mock_sds_json)
+    monkeypatch.setattr(
+        export_analysis,
+        "deserialize_spectro_or_ltas_dataset",
+        mock_sds_json,
+    )
 
     def mock_write_analysis(*args: list, **kwargs: dict) -> None:
         for k, v in kwargs.items():
diff --git a/tests/test_utils.py b/tests/test_utils.py
index a9b32de8..02f8bcda 100755
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -3,12 +3,15 @@
 import time
 from contextlib import nullcontext
 from pathlib import Path
+from typing import TYPE_CHECKING
 
 import numpy as np
 import pandas as pd
 import pytest
 from pandas import Timedelta
 
+from osekit.core_api.ltas_dataset import LTASDataset
+from osekit.core_api.spectro_dataset import SpectroDataset
 from osekit.utils.audio_utils import Normalization, normalize
 from osekit.utils.core_utils import (
     file_indexes_per_batch,
@@ -16,9 +19,13 @@
     locked,
     nb_files_per_batch,
 )
+from osekit.utils.deserialization import deserialize_spectro_or_ltas_dataset
 from osekit.utils.formatting_utils import aplose2raven
 from osekit.utils.path_utils import is_absolute, move_tree
 
+if TYPE_CHECKING:
+    from _pytest.monkeypatch import MonkeyPatch
+
 
 @pytest.fixture
 def aplose_dataframe() -> pd.DataFrame:
@@ -546,3 +553,24 @@ def test_normalization(
 ) -> None:
     normalized = normalize(values=values, normalization=normalization)
     assert np.array_equal(normalized, expected)
+
+
+def test_deserialize_spectro_or_ltas_dataset(monkeypatch: MonkeyPatch) -> None:
+    def sds_deserialization(*args, **kwargs) -> str:  # noqa: ANN002, ANN003
+        return "SpectroDataset"
+
+    def ltasds_deserialization(*args, **kwargs) -> str:  # noqa: ANN002, ANN003
+        return "LTASDataset"
+
+    monkeypatch.setattr(SpectroDataset, "from_json", sds_deserialization)
+    monkeypatch.setattr(LTASDataset, "from_json", ltasds_deserialization)
+
+    assert deserialize_spectro_or_ltas_dataset(path=Path()) == "LTASDataset"
+
+    def raise_key_error(*args, **kwargs) -> None:  # noqa: ANN002, ANN003
+        msg = "'nb_time_bins'"
+        raise KeyError(msg)
+
+    monkeypatch.setattr(LTASDataset, "from_json", raise_key_error)
+
+    assert deserialize_spectro_or_ltas_dataset(path=Path()) == "SpectroDataset"