Sign in
Search audiodsp
Subscribe to audiodsp
audiodsp by Keywords
Ads
Discussion Groups
Discussion Groups | Audio Signal Processing
Technical discussions related to Audio Signal Processing (digital effects, acoustics, noise reduction, musical signal processing, etc).
Search Results for "iir"
Converting FIR from IIR [7 Articles]
itza...@yahoo.co.in - Sep 20 2007
Hi all,
I have designed a FIR filter which has 60 DB SNR.Also I designed IIR filter at 60 DB SNR. FIR taps is around 700 whereas IIR is 12.
So I want to design IIR.But I want li... 
Generating Chirp/LFM by using IIR filters [2 Articles]
keta...@gmail.com - Sep 5 2006
Help needed in designing chirp generator and pulse compressor using iir filters (this amounts to using an IDT, I guess).
I want to generate chirp using an IIR filter.
I want... Audio IIR filter never settles after the initial error input
gordon_ao - Jun 5 2004
Hello all,
A simple question actually. Just found an issue with IIR low pass
filter in decimation low pass after the SINC filter in a Sigma Delta
A/D system. The one bit inp... Is the use of IIR filters for audio processing is a good idea?. [3 Articles]
kssubrahmanya - May 6 2005
Hi all,
what are the effects of using IIR filter on audio signal?.
... abt IIR filters and DSPs
Sameer Kibey - Jul 25 2003
hi all
I am interested in implementation of cascaded second order IIR filters. Do i
necessarily have to use a floating point DSP for this application? Any
serious drawback if a... IIR audio filtering [2 Articles]
daro...@yahoo.fr - Sep 1 2008
Hi !
I have little experience with time filtering ,ad i'd very much appreciate some input. So here's the deal:
I'm trying to enhance audio with some non-linear processing
so bas... resampling of an IIR filter [3 Articles]
stefanosorrentino - Nov 28 2002
Hello friends.
I have an apparently unsolvable problem:
I have a given IIR filter (they give me the poles and the zeros).
The filter was originally sampled at a given (very high... How to design an IIR filter using slope(db/oct) information [5 Articles]
care...@rediffmail.com - Mar 3 2005
Topic : To design an IIR HPF filter using IPP(Intel Integrated Performance
Primitives) library.
Current need: to calculate BW or Q from slope.
The specification of filter is :... Exponenital Filter design [2 Articles]
gordon_ao - Jan 24 2005
Hello Folks
At the moment I am trying to design a one pole simple IIR digital
filter to simulate exponential delay effect with simple equations
like 1 - e^(-t/T), where T i... 1-Bit Goertzel Algorithm Performance [2 Articles]
dn...@newelltech.com - May 14 2007
I'm implementing a DTMF detector using the Goertzel Algorithm.
I have raw simulations built using Excel (I know...) and am getting some interesting results.
I don't see a lot o... Overflow in IIR filters
Carsten Borg - Jan 3 2001
I'm implementing a resampling (decimation) filter on a fixed-point platform
(c54x) as a cascade of second-order-section IIR filters. Unfortunately my
implementation is very sens... How to design filter to match both magnitude and phase
gordon_ao - Sep 11 2003
Hello folks,
I would really appreciate your insight in terms of how to design
digital filters to match both magnitude and phase of a narrow band
complex Analog gain(simple 1s... Audio Equalizer [2 Articles]
akin...@hotmail.com - May 5 2008
Hi
I want build a multiband ( 10 band) 2-channel audio equalizer with FIR or IIR filters. Can you suggest any sample project or ready library for that purpose ?
Regards,
Aki... About Implementing A Sound Equalizer [2 Articles]
akin...@hotmail.com - Apr 20 2008
Hello ,
I want to build a multiband equalizer. I know that I must create bandpass filters for that aim.
So should they be FIR or IIR filters and why ?
Is there any sampl... FIR & IIR : design,filtering
akin...@hotmail.com - Apr 23 2008
Hello
I am using some FIR and IIR filters. I use coefficients from Dsptutor's java applets. First of all , have you ever experienced Dpstutor's designs on projects ?
I am us... Octave and 1/3-octave bandpass filter bank [6 Articles]
hank...@in.waw.pl - Apr 8 2005
Hi everyone,
My previous post was not submitted, so I decided to write it again.
I'm supposed to design a bandpass filter bank (octave and 1/3-octave) for audio measurements ... Data types in Audio Signal Processing
akin...@hotmail.com - Apr 20 2008
Hello
I want to implement my own audio equalizer.
First of all I create FIR& IIR bandpass filters but they process"doubl" or "float" samples. But I get sound samples as sh... Howling rejection
Curl - Oct 16 2001
Hello
My aim is to set up a howling detector (and canceller)
I tried an adaptive IIR notch filter (using LMS), but I have still problems with this system (due to harmonics freq... Re: Frequency response
Erik de Castro Lopo - Nov 29 2007
rendoddi wrote:
> Suppose you have H(z)=B(z)/A(z), the transfer function of a digital
> filter.
> How do you calculate the ANALYTIC expression of the filter's impulse
> r... fractional-octave band filters via FFT
normanrg - Feb 26 2004
Does anyone out there have experience or info in how to construct
fractional-octave bandwidth filters using FFTs? It does not seem to
be an accepted method, yet I cannot under... Re: Amplitude Estimation
Bernhard Holzmayer - Jun 21 2006
1st of all I'm using 512 taps on a 256 Samples Per Second signal. I
know I can eliminate the coefficients that are close to zero and still
get pretty much the same response... Optimal envelope extraction from an audio signal [3 Articles]
Brett Carruthers - Apr 27 2006
Hello,
I am currently using a digital 1000 point lowpass filter to extract
the envelope from an audio signal of which I have removed the
negative components (by using the ab... kingsbury filter [2 Articles]
Goh Kean Leong RBMA/ESD - Sep 2 2002
hi all forum yahoo group members,
I have few question regarding a type of IIR filter structure that name
as "kingsbury filter". This type of filter structure is claim to b... RE: Speech Noise
Egler, Mark - Mar 7 2002
Marcio,
If you design a second-order low-pass Butterworth "analog-prototype" IIR filter, which just about any digital filter design package can ... Biquad filtering with Fs/Fo > 200 [4 Articles]
dgen...@engmail.uwaterloo.ca - Oct 29 2007
I'm designing a parametric equalizer using a spartan 3e starter board and a TI PCM codec I wired to it, running at 48kHz. I decided to use the biquad IIR filter core from opencore... RE: AUTOMATIC EQUALIZER
THEOPHILUS MEDEIROS - Jan 28 2005
I thought of using adaptive filtering, but since it's a pahse coerrection. It might not be that easy. I plan on doing this using offline filtering. I just have to calibrate... Re: Re: Equalizers [3 Articles]
Jeff Brower - Mar 3 2008
Gene-
> The advantage of the parallel architecture is that it will give you the same filter combining response as an analog
> graphic EQ; that is, adjacent filters will inter... Re: DTMF decoding using fixed-point arithmetic
Amaresh patil - Apr 28 2006
Hi
The format of the data needs careful selection. it is not strainght. I would suggest you to first find out the max and min value of delay output data format and current o... Re: audio interpolation
Grzegorz Kraszewski - Dec 15 2005
Hello sunil@suni...
> Please, can anybody tell how can I remove the hiss noise from the
> interpolated audio signal? Here, I am simulating the interpolation using
> c-program a... Re: Guitar Valve Preamp with DSP
Bernhard Holzmayer - Oct 2 2006
On Tuesday 26 September 2006 07:09, williamluisterry wrote:
> Hi. I've working with al TMS320C613 DSK building some guitar effects.
> I was suscesfully whit all of these but I ... Re: Filter Order in Analog and Digital [6 Articles]
Jeff Brower - Mar 22 2005
Glidden-
> Thanks for you email. In the figure, I see the slope (coming down on
> the right side) change, just like mine (it just looks like a sag) !!! I will
> sent you t... RE: Unknown Filter Type
Egler, Mark - Jan 14 2005
I
looked it up myself, and I was wrong. A Volterra filter is not recursive, i.e.
it's FIR but with polynomial terms. What Jon has is recursive (IIR) and I
haven't found a...