Remove sox effects library and API

CMakeLists.txt

@@ -166,10 +166,6 @@ else()
 endif()
 
 add_subdirectory(src/libtorchaudio)
-if (BUILD_SOX)
-  add_subdirectory(third_party/sox)
-  add_subdirectory(src/libtorchaudio/sox)
-endif()
 if (USE_FFMPEG)
   if (DEFINED ENV{FFMPEG_ROOT})
     add_subdirectory(third_party/ffmpeg/single)

docs/source/functional.rst

@@ -23,7 +23,6 @@ Utility
    mask_along_axis_iid
    mu_law_encoding
    mu_law_decoding
-   apply_codec
    resample
    loudness
    convolve

docs/source/torchaudio.rst

@@ -78,14 +78,6 @@ The following table summarizes the backends.
        to retrieve the supported codecs.
 
        This backend Supports various protocols, such as HTTPS and MP4, and file-like objects.
-   * - 2
-     - SoX
-     - Linux, macOS
-     - Use :py:func:`~torchaudio.utils.sox_utils.list_read_formats` and
-       :py:func:`~torchaudio.utils.sox_utils.list_write_formats`
-       to retrieve the supported codecs.
-
-       This backend does *not* support file-like objects.
    * - 3
      - SoundFile
      - Linux, macOS, Windows

docs/source/utils.rst

@@ -8,7 +8,7 @@ torchaudio.utils
 .. warning::
     Starting with version 2.8, we are refactoring TorchAudio to transition it
     into a maintenance phase. As a result:
-    - ``sox_utils`` and `ffmpeg_utils`` are deprecated in 2.8 and will be removed in 2.9.
+    - ``ffmpeg_utils`` are deprecated in 2.8 and will be removed in 2.9.
     - The decoding and encoding capabilities of PyTorch for both audio and video
       are being consolidated into TorchCodec.
     Please see https://github.com/pytorch/audio/issues/3902 for more information.

examples/libtorchaudio/CMakeLists.txt

@@ -2,8 +2,6 @@ cmake_minimum_required(VERSION 3.5)
 
 project(libtorchaudio-cpp-example)
 
-SET(BUILD_SOX ON CACHE BOOL "Build libsox into libtorchaudio")
-
 SET(BUILD_KALDI OFF CACHE BOOL "Build Kaldi into libtorchaudio")
 SET(BUILD_RNNT ON CACHE BOOL "Build RNN transducer into libtorchaudio")
 SET(BUILD_TORCHAUDIO_PYTHON_EXTENSION OFF CACHE BOOL "Build Python binding")