The digital companding algorithm is all about processing:Group of answer choices8-bit linear-to-12-bit compressed code12-bit compressed-to-8-bit linear code12-bit linear-to-8-bit compressed code8-bit compressed-to-12-bit linear code

To answer the question step by step:

1. Understand the term "digital companding algorithm":

   • Companding is a method used in signal processing where the dynamic range of a signal is compressed before transmission and expanded back to its original form upon reception.

2. Identify the options provided:

   • 8-bit linear-to-12-bit compressed code
   • 12-bit compressed-to-8-bit linear code
   • 12-bit linear-to-8-bit compressed code
   • 8-bit compressed-to-12-bit linear code

3. Determine the typical use of companding in digital signal processing:

   • Companding is often used to reduce the number of bits needed to represent a signal while maintaining its quality. This usually involves compressing a higher bit-depth signal to a lower bit-depth.

4. Analyze the options in the context of companding:

   • 8-bit linear-to-12-bit compressed code: This suggests increasing the bit-depth, which is not typical for companding.
   • 12-bit compressed-to-8-bit linear code: This suggests decompressing a signal, which is not the primary focus of companding.
   • 12-bit linear-to-8-bit compressed code: This suggests compressing a higher bit-depth signal to a lower bit-depth, which aligns with the purpose of companding.
   • 8-bit compressed-to-12-bit linear code: This suggests decompressing a signal, which is not the primary focus of companding.

5. Select the most appropriate option:

   • The correct answer is "12-bit linear-to-8-bit compressed code."

Therefore, the digital companding algorithm is all about processing: 12-bit linear-to-8-bit compressed code.