Hydrogenaudio Forums > Convert PCM Sample

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doomtn

Mar 13 2008, 06:05

Hi all,

My MP3 decoder generates 16-bit PCM sample signed, I want to convert them into 16-bit PCM sample unsigned.

Thanks in advance.

Yirkha

Mar 13 2008, 08:24

Hi doomtn,

Add 32768 to each sample value.

You are welcome.

doomtn

Mar 13 2008, 11:10

QUOTE(Yirkha @ Mar 13 2008, 08:24)

Hi doomtn,

Add 32768 to each sample value.

You are welcome.

Its not working

cabbagerat

Mar 13 2008, 23:23

QUOTE(doomtn @ Mar 13 2008, 09:10)

Its not working

Post some code, then. You need to be very careful with signed->unsigned conversions in C (and most other languages, I don't know what you are using).

john33

Mar 14 2008, 03:12

QUOTE(doomtn @ Mar 13 2008, 12:05)

Hi all,

My MP3 decoder generates 16-bit PCM sample signed, I want to convert them into 16-bit PCM sample unsigned.

Thanks in advance.

You'll need to move the original value to an unsigned short and then add the 32768. However, why do you want to do it? So far as I'm aware, nothing will play it or know what to do with it.

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