Subject: Dealing with propagating truncation errors From: Ole Wolf Date: 1999/05/26 Newsgroups: comp.dsp THIS WORK IS PLACED IN THE PUBLIC DOMAIN
Name: Dealing with propagating truncation errors.
Category: Algorithmic tricks.
Application: When values are truncated, and the truncated values are used later in the algorithm, ultimately corrupting the output.
From: firstname.lastname@example.org (Eric Jacobsen) Subject: DSP Trick - Using P-M to design a non-linear phase FIR filter. Date: 23 Oct 1999 00:00:00 GMT Newsgroups: comp.dsp THIS WORK IS PLACED IN THE PUBLIC DOMAIN
It is possible to use the Parks-McClellan algorithm to design FIR filters with non-linear phase response. For example, a FIR filter with the equivalent response of a Butterworth filter can be designed using the P-M routine.
DSP Trick: Fast Floating-Point to mu-Law Conversion
From: Jim Thomas Subject: Fast floting point to mu-law conversion Date: 6 May 1999 THIS WORK IS PLACED IN THE PUBLIC DOMAIN
Name: Fast floating point to mu-law conversion
Application: When you need to convert audio data to mu-law and don't have a lot of time to mess around.
Advantages: Very Fast (I implemented this in a seven cycle loop on a Sharc processor).
From: robert bristow-johnson <email@example.com> Subject: Fixed-Point DC Blocking Filter with Noise-Shaping Date: 22 Jun 2000 00:00:00 GMT, Updated: 17 Apr 2001 Newsgroups: comp.dsp THIS WORK IS PLACED IN THE PUBIC DOMINION
Name: Fixed-Point DC Blocking Filter With Noise-Shaping
Application: Used anytime DC offsets need to be removed (audio level metering or nearly any audio signal processing to avoid clicks).
From: Olli Niemitalo (firstname.lastname@example.org) Subject: Trick: Simultaneous parabolic approximation of sin and cos Newsgroups: comp.dsp Date: 2001-06-30 05:15:09 PST
Name: Simultaneous parabolic approximation of sin and cos