A comb filter has a certain purpose. Do you know it?
Not everybody is good at electronics (where comb filters have a clearer
meaning) or physics, but it does pay to take a little time to at least
try to understand the difference between free wheel thinking about some
glossy subject (DSP)
[Peter S]
but when i consider that part of designing comb filters
tuned to musical notes, i have to at least pause and wonder which
interpolation would be better or sufficient for whatever application and
that's why it didn't seem trivial to me.
Linear interpolation is fast and dirty, and
On 5/10/15 3:42 PM, Matthias Puech wrote:
I have a recursive comb filter, implemented with a simple delay line of size N and feedback F in
[0..1]. If feedback is high and I ping it, it decays exponentially as it should, to
give the typical ringing effect. The decay time D is also proportional
On 12/05/2015, robert bristow-johnson r...@audioimagination.com wrote:
so Peter, this (the answer to the OP's question) is trivial? it's not
string theory, but it's more than trivial.
The poster's question was: how to solve F in a decaying exponential
for a given D and T:
Thank you very much to all of you for the great resources and the blazingly
fast answers. It gives me much to digest. Indeed, my question was simply about
a feedback path, no feedforward.
I solved my problem, using Peter’s comment and with the great help of Matt
(offline), simply by doing:
F
On 11/05/2015, Peter S peter.schoffhau...@gmail.com wrote:
By the way,
the 'decay time' is also well defined in case of one-pole filters, and
is called 'time constant'
dspguide.com gives the following time constant formula for one pole filters:
x = exp ( -1 / d )
where d is the desired decay
Le 10 mai 2015 à 16:50, robert bristow-johnson r...@audioimagination.com a
écrit :
it's not trivial and it's not in the basic lit.
This make me somehow relieved and disappointed at the same time. ;)
lemme find and review my own notes/equations regarding that (i think i titled
it Fun with
On 5/10/15 3:42 PM, Matthias Puech wrote:
This is my first post on this list, although I have been reading it for quite
some time, with great interest.
welcum
I am a CS researcher in an unrelated field, but fascinated for as long as I
can remember by DSP and sound synthesis.
On 11/05/2015, robert bristow-johnson r...@audioimagination.com wrote:
apologies for the hyperbole. if you consider both feedback and
feedforward gain,
Where does the 'feedforward' part come from? As I understand, poster
has a delay line with a simple feedback loop, and no feedforward path:
On 10/05/2015, robert bristow-johnson r...@audioimagination.com wrote:
it's not trivial and it's not in the basic lit.
It's trivial, and it's in the 1961 Schroeder paper linked in the previous post.
- Peter
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On 5/10/15 8:00 PM, Peter S wrote:
On 10/05/2015, robert bristow-johnsonr...@audioimagination.com wrote:
it's not trivial and it's not in the basic lit.
It's trivial, and it's in the 1961 Schroeder paper linked in the previous post.
apologies for the hyperbole. if you consider both
On 10/05/2015, Matthias Puech pu...@cs.mcgill.ca wrote:
I have a recursive comb filter, implemented with a simple delay line of size
N and feedback F in [0..1]. If feedback is high and I ping it, it decays
exponentially as it should, to give the typical ringing effect. The decay
time D is also
Hello DSPists,
This is my first post on this list, although I have been reading it for quite
some time, with great interest. I am a CS researcher in an unrelated field, but
fascinated for as long as I can remember by DSP and sound synthesis.
Unfortunately my knowledge is still basic, and now
I'm about to build a clouds from pcb and quite interested in how to reprogram
it. Seen your parasites on muffs and anxious to try it.
Matt
(From Ableton)
Sent from a phone.
On 10.05.2015, at 21:42, Matthias Puech pu...@cs.mcgill.ca wrote:
Hello DSPists,
This is my first post on this
Oops that was meant as directly to Matthias.
But as long as there is no filter in the feedback loop, Rt60 is your friend ;)
http://www.sengpielaudio.com/calculator-RT60.htm
Sent from a phone.
On 10.05.2015, at 21:54, Matt Jackson
matt.jack...@ableton.commailto:matt.jack...@ableton.com wrote:
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