diff --git a/apps/lea_unicast/app.py b/apps/lea_unicast/app.py
index c12d5228..464ab4f0 100644
--- a/apps/lea_unicast/app.py
+++ b/apps/lea_unicast/app.py
@@ -16,23 +16,18 @@
 # Imports
 # -----------------------------------------------------------------------------
 from __future__ import annotations
+
 import asyncio
 import datetime
-import enum
 import functools
 from importlib import resources
 import json
 import os
 import logging
 import pathlib
-from typing import Optional, List, cast
 import weakref
-import struct
-
-import ctypes
-import wasmtime
-import wasmtime.loader
-import liblc3  # type: ignore
+import lc3
+import wave
 
 import click
 import aiohttp.web
@@ -45,6 +40,7 @@
 from bumble.profiles import ascs, bap, pacs
 from bumble.hci import Address, CodecID, CodingFormat, HCI_IsoDataPacket
 
+
 # -----------------------------------------------------------------------------
 # Logging
 # -----------------------------------------------------------------------------
@@ -54,6 +50,7 @@
 # Constants
 # -----------------------------------------------------------------------------
 DEFAULT_UI_PORT = 7654
+DEFAULT_PCM_BYTES_PER_SAMPLE = 2
 
 
 def _sink_pac_record() -> pacs.PacRecord:
@@ -100,153 +97,8 @@ def _source_pac_record() -> pacs.PacRecord:
     )
 
 
-# -----------------------------------------------------------------------------
-# WASM - liblc3
-# -----------------------------------------------------------------------------
-store = wasmtime.loader.store
-_memory = cast(wasmtime.Memory, liblc3.memory)
-STACK_POINTER = _memory.data_len(store)
-_memory.grow(store, 1)
-# Mapping wasmtime memory to linear address
-memory = (ctypes.c_ubyte * _memory.data_len(store)).from_address(
-    ctypes.addressof(_memory.data_ptr(store).contents)  # type: ignore
-)
-
-
-class Liblc3PcmFormat(enum.IntEnum):
-    S16 = 0
-    S24 = 1
-    S24_3LE = 2
-    FLOAT = 3
-
-
-MAX_DECODER_SIZE = liblc3.lc3_decoder_size(10000, 48000)
-MAX_ENCODER_SIZE = liblc3.lc3_encoder_size(10000, 48000)
-
-DECODER_STACK_POINTER = STACK_POINTER
-ENCODER_STACK_POINTER = DECODER_STACK_POINTER + MAX_DECODER_SIZE * 2
-DECODE_BUFFER_STACK_POINTER = ENCODER_STACK_POINTER + MAX_ENCODER_SIZE * 2
-ENCODE_BUFFER_STACK_POINTER = DECODE_BUFFER_STACK_POINTER + 8192
-DEFAULT_PCM_SAMPLE_RATE = 48000
-DEFAULT_PCM_FORMAT = Liblc3PcmFormat.S16
-DEFAULT_PCM_BYTES_PER_SAMPLE = 2
-
-
-encoders: List[int] = []
-decoders: List[int] = []
-
-
-def setup_encoders(
-    sample_rate_hz: int, frame_duration_us: int, num_channels: int
-) -> None:
-    logger.info(
-        f"setup_encoders {sample_rate_hz}Hz {frame_duration_us}us {num_channels}channels"
-    )
-    encoders[:num_channels] = [
-        liblc3.lc3_setup_encoder(
-            frame_duration_us,
-            sample_rate_hz,
-            DEFAULT_PCM_SAMPLE_RATE,  # Input sample rate
-            ENCODER_STACK_POINTER + MAX_ENCODER_SIZE * i,
-        )
-        for i in range(num_channels)
-    ]
-
-
-def setup_decoders(
-    sample_rate_hz: int, frame_duration_us: int, num_channels: int
-) -> None:
-    logger.info(
-        f"setup_decoders {sample_rate_hz}Hz {frame_duration_us}us {num_channels}channels"
-    )
-    decoders[:num_channels] = [
-        liblc3.lc3_setup_decoder(
-            frame_duration_us,
-            sample_rate_hz,
-            DEFAULT_PCM_SAMPLE_RATE,  # Output sample rate
-            DECODER_STACK_POINTER + MAX_DECODER_SIZE * i,
-        )
-        for i in range(num_channels)
-    ]
-
-
-def decode(
-    frame_duration_us: int,
-    num_channels: int,
-    input_bytes: bytes,
-) -> bytes:
-    if not input_bytes:
-        return b''
-
-    input_buffer_offset = DECODE_BUFFER_STACK_POINTER
-    input_buffer_size = len(input_bytes)
-    input_bytes_per_frame = input_buffer_size // num_channels
-
-    # Copy into wasm
-    memory[input_buffer_offset : input_buffer_offset + input_buffer_size] = input_bytes  # type: ignore
-
-    output_buffer_offset = input_buffer_offset + input_buffer_size
-    output_buffer_size = (
-        liblc3.lc3_frame_samples(frame_duration_us, DEFAULT_PCM_SAMPLE_RATE)
-        * DEFAULT_PCM_BYTES_PER_SAMPLE
-        * num_channels
-    )
-
-    for i in range(num_channels):
-        res = liblc3.lc3_decode(
-            decoders[i],
-            input_buffer_offset + input_bytes_per_frame * i,
-            input_bytes_per_frame,
-            DEFAULT_PCM_FORMAT,
-            output_buffer_offset + i * DEFAULT_PCM_BYTES_PER_SAMPLE,
-            num_channels,  # Stride
-        )
-
-        if res != 0:
-            logging.error(f"Parsing failed, res={res}")
-
-    # Extract decoded data from the output buffer
-    return bytes(
-        memory[output_buffer_offset : output_buffer_offset + output_buffer_size]
-    )
-
-
-def encode(
-    sdu_length: int,
-    num_channels: int,
-    stride: int,
-    input_bytes: bytes,
-) -> bytes:
-    if not input_bytes:
-        return b''
-
-    input_buffer_offset = ENCODE_BUFFER_STACK_POINTER
-    input_buffer_size = len(input_bytes)
-
-    # Copy into wasm
-    memory[input_buffer_offset : input_buffer_offset + input_buffer_size] = input_bytes  # type: ignore
-
-    output_buffer_offset = input_buffer_offset + input_buffer_size
-    output_buffer_size = sdu_length
-    output_frame_size = output_buffer_size // num_channels
-
-    for i in range(num_channels):
-        res = liblc3.lc3_encode(
-            encoders[i],
-            DEFAULT_PCM_FORMAT,
-            input_buffer_offset + DEFAULT_PCM_BYTES_PER_SAMPLE * i,
-            stride,
-            output_frame_size,
-            output_buffer_offset + output_frame_size * i,
-        )
-
-        if res != 0:
-            logging.error(f"Parsing failed, res={res}")
-
-    # Extract decoded data from the output buffer
-    return bytes(
-        memory[output_buffer_offset : output_buffer_offset + output_buffer_size]
-    )
+decoder: lc3.Decoder | None = None
+encoder: lc3.Encoder | None = None
 
 
 async def lc3_source_task(
@@ -256,28 +108,24 @@ async def lc3_source_task(
     device: Device,
     cis_handle: int,
 ) -> None:
-    with open(filename, 'rb') as f:
-        header = f.read(44)
-        assert header[8:12] == b'WAVE'
-
-        pcm_num_channel, pcm_sample_rate, _byte_rate, _block_align, bits_per_sample = (
-            struct.unpack("<HIIHH", header[22:36])
-        )
-        assert pcm_sample_rate == DEFAULT_PCM_SAMPLE_RATE
-        assert bits_per_sample == DEFAULT_PCM_BYTES_PER_SAMPLE * 8
+    assert encoder
+    with wave.open(filename, 'rb') as wav:
+        assert (
+            bits_per_sample := wav.getsampwidth()
+        ) == DEFAULT_PCM_BYTES_PER_SAMPLE * 8
 
-        frame_bytes = (
-            liblc3.lc3_frame_samples(frame_duration_us, DEFAULT_PCM_SAMPLE_RATE)
-            * DEFAULT_PCM_BYTES_PER_SAMPLE
-        )
+        frame_samples = encoder.get_frame_samples()
         packet_sequence_number = 0
 
         while True:
             next_round = datetime.datetime.now() + datetime.timedelta(
                 microseconds=frame_duration_us
             )
-            pcm_data = f.read(frame_bytes)
-            sdu = encode(sdu_length, pcm_num_channel, pcm_num_channel, pcm_data)
+            sdu = encoder.encode(
+                pcm=wav.readframes(frame_samples),
+                num_bytes=sdu_length,
+                bit_depth=bits_per_sample,
+            )
 
             iso_packet = HCI_IsoDataPacket(
                 connection_handle=cis_handle,
@@ -410,7 +258,7 @@ class Speaker:
 
     def __init__(
         self,
-        device_config_path: Optional[str],
+        device_config_path: str | None,
         ui_port: int,
         transport: str,
         lc3_input_file_path: str,
@@ -490,12 +338,11 @@ def on_pdu(pdu: HCI_IsoDataPacket, ase: ascs.AseStateMachine):
                     not isinstance(codec_config, bap.CodecSpecificConfiguration)
                     or codec_config.frame_duration is None
                     or codec_config.audio_channel_allocation is None
+                    or decoder is None
                 ):
                     return
-                pcm = decode(
-                    codec_config.frame_duration.us,
-                    codec_config.audio_channel_allocation.channel_count,
-                    pdu.iso_sdu_fragment,
+                pcm = decoder.decode(
+                    pdu.iso_sdu_fragment, bit_depth=DEFAULT_PCM_BYTES_PER_SAMPLE * 8
                 )
                 self.device.abort_on('disconnection', self.ui_server.send_audio(pcm))
 
@@ -537,16 +384,18 @@ def on_ase_state_change(ase: ascs.AseStateMachine) -> None:
                     ):
                         return
                     if ase.role == ascs.AudioRole.SOURCE:
-                        setup_encoders(
-                            codec_config.sampling_frequency.hz,
-                            codec_config.frame_duration.us,
-                            codec_config.audio_channel_allocation.channel_count,
+                        global encoder
+                        encoder = lc3.Encoder(
+                            frame_duration_us=codec_config.frame_duration.us,
+                            sample_rate_hz=codec_config.sampling_frequency.hz,
+                            num_channels=codec_config.audio_channel_allocation.channel_count,
                         )
                     else:
-                        setup_decoders(
-                            codec_config.sampling_frequency.hz,
-                            codec_config.frame_duration.us,
-                            codec_config.audio_channel_allocation.channel_count,
+                        global decoder
+                        decoder = lc3.Decoder(
+                            frame_duration_us=codec_config.frame_duration.us,
+                            sample_rate_hz=codec_config.sampling_frequency.hz,
+                            num_channels=codec_config.audio_channel_allocation.channel_count,
                         )
 
             for ase in ascs_service.ase_state_machines.values():
diff --git a/apps/lea_unicast/liblc3.wasm b/apps/lea_unicast/liblc3.wasm
deleted file mode 100755
index e9051058..00000000
Binary files a/apps/lea_unicast/liblc3.wasm and /dev/null differ
diff --git a/pyproject.toml b/pyproject.toml
index 33ac7145..bf983389 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,6 @@ development = [
     "types-appdirs >= 1.4.3",
     "types-invoke >= 1.7.3",
     "types-protobuf >= 4.21.0",
-    "wasmtime == 20.0.0",
 ]
 avatar = [
     "pandora-avatar == 0.0.10",
@@ -66,6 +65,9 @@ documentation = [
     "mkdocs-material >= 8.5.6",
     "mkdocstrings[python] >= 0.19.0",
 ]
+lc3 = [
+    "lc3 @ git+https://github.com/google/liblc3.git",
+]
 
 [project.scripts]
 bumble-ble-rpa-tool = "bumble.apps.ble_rpa_tool:main"