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I'm trying to read data, I want this data in numbers (int double float something i can operate with in order to make some dsp) from a buffer obtained from a pcm configured as S16_LE, (signed 16 bits little endian) but i don't understand how information is organized inside the buffer. I think 16 bits means that signal values are between -32767 and 32768 but nothing more..

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    $\begingroup$ yes, it's -32768 to 32767. Little endian just refers to the byte order. $\endgroup$
    – Hilmar
    Apr 23, 2020 at 16:30

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Endianness refers to how multi-byte words are organized, supposing that a byte is an 8-bit word. For big-endian, ordering puts the most significant byte first and the least significant byte last. This is the converse for little-endians.

An unsigned hexadecimal number 0x2317 needs two 8-bytes

  • big-endian order: 0x23 0x17,
  • little-endian order : 0x17 0x23.
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    $\begingroup$ The little-endian order is 0x17 0x23 $\endgroup$
    – Justme
    Apr 23, 2020 at 21:51

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