and seeing biquad coefficients MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit
Do ggee's objects recognize the sampling rate? They didn't appear to for me. When I changed the SR and used the same frequency value, I heard a change in the center frequency of the filter.
Sam From: Hans-Christoph Steiner Sent: 4/9/2012 5:59 PM To: Samuel Burt Cc: Pd List Subject: Re: [PD] [PD-announce] new GUI obect: filterview, for generating and seeing biquad coefficients
It understands the global sample rate, but not yet the sample rate set with [block~].
.hc
On Apr 9, 2012, at 3:28 PM, Samuel Burt wrote:
I've just taught myself about biquad~ and understand enough to know that a change in sampling rate will change the calculation of the center frequency. I was hoping the second outlet would output this information. Will it change based on the sampling rate or will it always be calculated for 44.1K?
Sam
On Apr 9, 2012, at 3:20 , Hans-Christoph Steiner wrote:
The second outlet will eventually output the current filter bandwith, center, and gain, but right now it does nothing.
.hc
On Apr 9, 2012, at 2:39 PM, Samuel Burt wrote:
Hans,
Great to know. It works wonderfully with the beta of 0.43-extended here.
What is the second outlet of filterview?
I really appreciate the safeguards to prevent the filter from becoming unstable.
Sam
On Apr 9, 2012, at 11:13 , Hans-Christoph Steiner wrote:
The last bit is the key bit of information: filterview will only work on 0.43, not 0.42.5. It relies on some of the new features of 0.43.
.hc
On Apr 9, 2012, at 9:57 AM, Samuel Burt wrote:
Here are the steps I took:
I opened the help patch in the directory with the .pd_darwin binary file.
I turned on audio.
I selected a high pass filter.
I wondered if changing the bandwidth would do anything, so I moved my cursor over one of the red lines that show bandwidth. The line became highlighted but I could not move it from its position.
I selected a band pass filter.
I attempted to move the bandwidth, again, to no avail.
I single-clicked (no hold) in the area between the bandwidth markers and began changing the frequency of the band pass filter.
The filter continued following my pointer as long as it was inside the borders of the GUI.
If I moved my pointer out of the GUI and pressed command-E, the frequency would stop moving.
Pressing command-E, again, would resume following my pointer without my clicking anywhere.
Then, Pd failed with a spinning beach ball. A force quit was necessary.
In the meantime, when I clicked on the patch's titlebar, it showed one of the cursor symbols for changing the bandwidth.
Let me know if I can help test it more.
I suppose I left out one bit of information. I am running Pd-extended 0.42.5-extended.
Sam
On Apr 8, 2012, at 6:35 , Hans-Christoph Steiner wrote:
Hmm, I thought I got rid of that issue with it sticking to the mouse pointer... arg. Can you tell me the steps to reproduce it?
I should add more to the help patch. The goal was to make it as self-explanatory as possible. So you can click and move the filter center and gain, and click and drag on the vertical bandwidth lines to control the bandwidth.
.hc
On Apr 8, 2012, at 4:33 PM, Samuel Burt wrote:
> Hans, > > This is so exciting. The binary is working here on a MacIntosh 2.8 GHz Intel Core 2 Duo with OS 10.6.8. I thought you might appreciate some quick user feedback. > > When I click the graphic, it lets me adjust frequency and amplitude, but then my cursor gets stuck to it like mouse up isn't working. Every time I click it adds another red vertical line. > > A slight bit more documentation would be helpful in the help patch, too, explaining how one can interact with the graph with the mouse. Is it possible to change the bandwidth with the GUI? is there a key combination one can hold? > > Sam > >
The arc of history bends towards justice. - Dr. Martin Luther King, Jr.
"[T]he greatest purveyor of violence in the world today [is] my own government." - Martin Luther King, Jr.
News is what people want to keep hidden and everything else is publicity. - Bill Moyers