Have I misunderstood how BRR works this whole time?

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psycopathicteen
Posts: 2910
Joined: Wed May 19, 2010 6:12 pm

Have I misunderstood how BRR works this whole time?

Post by psycopathicteen » Wed Oct 23, 2019 3:27 pm

I've always expected the 4 bit samples representing values from -8 to 7. Now I'm wondering if it's supposed to be -7.5 to 7.5 instead because I can't get the conversion math correct.

psycopathicteen
Posts: 2910
Joined: Wed May 19, 2010 6:12 pm

Re: Have I misunderstood how BRR works this whole time?

Post by psycopathicteen » Wed Oct 23, 2019 8:56 pm

Never mind I figured out what I did wrong. Turns out it's better to filter first, then shift, instead of shift first and then sample. Shifting first can cause it to overflow.

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