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Fixed Point: cut, round, saturation?

Discussion in 'Electronic Basics' started by Davy, Dec 22, 2005.

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  1. Davy

    Davy Guest

    Hi all,

    I used to read FIR filter RTL implementation. I found they use a lot of
    cut(i.e. delete several LSB bits) , round(i.e. delete several LSB
    bits), and saturate to protect the data overflow.

    I found they like to cut and saturate in the middle of the data path.
    And round at the end of
    the data path.

    Is there any book talk about Fixed Point operation?
    And is there any design tools?

    Any suggestions will be appreciated!
    Best regards,
    Davy
     
  2. that's noise shaping, i believe.
    there should be. O&S has some theoretical analysis stuff.

    Randy Yates has a web page someone. i'm sure he'll be coming along
    soon. i don't know where it is and am too lazy to Google for it. (try
    it yourself.)
    i thought there were. MATLAB?

    r b-j
     
  3. Randy Yates

    Randy Yates Guest

    It doesn't seem like we have enough information to conclude this,
    Robert.
    I'm not sure you're answering the question he's asking.
    --
    % Randy Yates % "Remember the good old 1980's, when
    %% Fuquay-Varina, NC % things were so uncomplicated?"
    %%% 919-577-9882 % 'Ticket To The Moon'
    %%%% <> % *Time*, Electric Light Orchestra
    http://home.earthlink.net/~yatescr
     
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