59 lines
1.6 KiB
ReStructuredText
59 lines
1.6 KiB
ReStructuredText
.. audio_clips_for_i2s:
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Create audio clip files for use with I²S Speakers
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=================================================
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It is possible to create sound clips to include in your build to use with I²S speakers. No need for a media player component!
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- Using `Audacity <https://github.com/audacity/audacity>`__, convert audio to WAV, mono, 16kHz, Unsigned 8bit PCM
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.. figure:: /guides/images/save_as_wav.png
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:alt: Audacity export dialog
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:height: 200
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:align: center
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- Convert again, this time with `SOX <https://github.com/chirlu/sox>`__.
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.. code-block:: console
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sox startup.wav --bits 8 --encoding signed-integer --endian little startup_again.raw
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- Now convert it into a hexadecimal string using `xxd <https://github.com/ckormanyos/xxd>`__ into a C++ file.
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.. code-block:: console
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xxd -i startup_again.raw startup.c
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- The resulting file needs a modification in the start line:
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Open in an editor and change
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``unsigned char startup_again_raw[] = {…[SNIP]…}``
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to
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``std::vector<unsigned char> startup_raw = {…[SNIP]…}``.
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Now you can rename the file to startup.h, put it inside the esphome configuration directory and put it in a include in your device config like this:
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.. code-block:: yaml
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esphome:
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includes:
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- startup.h
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Now you can define using the audio clip using the following:
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.. code-block:: yaml
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- speaker.play:
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id: speaker
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data: !lambda return startup_raw;
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Enjoy!
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HowTo by [NUT].
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See also
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--------
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- :doc:`/components/speaker/index`
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- :doc:`/components/speaker/i2s_audio`
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- :ghedit:`Edit`
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