[music-dsp] WDF Gyrator in BlockCompiler anyone ?
Hi List, Does anyone have any experience with Wave Digital Filters, particularly using BlockCompiler from www.acoustics.hut.fi ? I'm working through the example transformer model in the paper Real-Time Audio Tranformer Emulation for Virtual Tube Amplifiers but I'm stuck with an aspect of the gyrator component of the windings circuits. It is stated that the gyrator port resistance for both of its ports is equal to N (the transformation ratio), but I can't figure out how to set the ratio for the .gyrator object in BlockCompiler, which doesn't have any parameters. I naively tried to create my own object based on the existing gyrator and added an N parameter. I have found that I can set the port resistance of the reflection free port (wa-port-block) but am unable to do the same for the w-port (non adaptive / RFP) because the resistance parameter is already connected - presumably to the resistance of the parallel adapter port that the gyrator is connected to. The original gyrator object just copies the port resistance from the w-port to the wa-port, so the port resistances are equal, but I can't see how this relates to the requirement of setting the port resistance to N. Can anyone advise me ? RegardsRob -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] WDF Gyrator in BlockCompiler anyone ?
Hi, I tried to use the block compiler, though researchers from finland (from the same research lab) do not recomend to use it anynmore, since it became unstable and does not have support anymore since Dr Karjalainen passed away (the creator of block compiler. Newer WDF tools will soon be available. Cheers Thomaz -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
[music-dsp] Possible Job Opportunity
Hi Everyone. Danville Signal specializes in DSP based hardware and software solutions (mostly around ADI SHARC XMOS) aimed at OEMs. Much of our work is directed at high performance consumer and professional audio applications. We have just started looking at the possibility of adding to our technical staff. We are considering a broad range of candidates, from recent graduates (electrical engineering or convince us otherwise) to seasoned experts. Obviously, we are posting to this list because we want someone who has a strong passion for audio applications. If you are interested, drop me an email with a short description of why we should start a conversation. Tell us about audio projects you have participated in and what your contribution was. Are you software oriented, hardware oriented or both? Can you solder? Do you speak or write well? In general, I hate resumes. We are not interested in headhunters. Thanks, Al Clark acl...@danvillesignal.com www.danvillesignal.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] WDF Gyrator in BlockCompiler anyone ?
I did a research on that seminar you just presented I know that the block compiler was good enough for simple models. They worked up to a model of a tube audio transformer. After that no further work was produced, when it became unstable for complex models. Rafael paiva is working on a C++ environment for future WDF models (rcdpa...@gmail.com ), he could give you further feedback when it will be ready. Block compiler reads Clisp code which makes it somehow difficult to use. Cheers Thomaz -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
