Re: [PD] [helmholtz~]
hi phil, what are you trying to do? do you need midi from your electric bass? or just a way to make a synth in pd? i ask because i built a gr-300 emulation for bass that works very well and with almost no latency. you can drive any oscillator within pd from that. it's all signalpath though. ideally you would use such a thing with a hexaphonic (or quadraphonic) pickup, because it's monophonic. but the same is true for helmholtz i guess. cheers, simon On Feb 14, 2013, at 1:24 AM, Phil Stone pkst...@ucdavis.edu wrote: Hi Katja, I'm looking with great interest at your [helmholtz~] pitch tracking object. I'm not asking to be lazy (I'm going to try it out for myself!), but I'm wondering if you have any general impressions of its performance as to how it compares with [sigmund~]. I'm particularly interested as to how it will do for tracking a fretless electric bass. It looks like an excellent piece of work, and I've enjoyed reading your detailed page about it. Phil Stone ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] [helmholtz~]
Hi Simon, I've been using [sigmund~] with pretty good results, tracking the bass and using it to drive various things in a complex Pd setup. I'm always interested in alternative pitch trackers, though. I play a Steinberger XL, so I won't likely be carving it up to put in a hex pickup; that's kept me a way from Roland's approach (that plus the cost!). I'm still quite intrigued by what you've done; do you have any documentation about it? Thanks for writing, Phil On 2/14/13 12:48 AM, Simon Iten wrote: hi phil, what are you trying to do? do you need midi from your electric bass? or just a way to make a synth in pd? i ask because i built a gr-300 emulation for bass that works very well and with almost no latency. you can drive any oscillator within pd from that. it's all signalpath though. ideally you would use such a thing with a hexaphonic (or quadraphonic) pickup, because it's monophonic. but the same is true for helmholtz i guess. cheers, simon On Feb 14, 2013, at 1:24 AM, Phil Stone pkst...@ucdavis.edu wrote: Hi Katja, I'm looking with great interest at your [helmholtz~] pitch tracking object. I'm not asking to be lazy (I'm going to try it out for myself!), but I'm wondering if you have any general impressions of its performance as to how it compares with [sigmund~]. I'm particularly interested as to how it will do for tracking a fretless electric bass. It looks like an excellent piece of work, and I've enjoyed reading your detailed page about it. Phil Stone ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] [helmholtz~]
[helmholtz~] is probably more accurate and will show you all of the pitch fluctuations live. [sigmund~] with the argument notes is probably preferable, if you only want one simple value per note. On Thu, Feb 14, 2013 at 1:24 AM, Phil Stone pkst...@ucdavis.edu wrote: Hi Katja, I'm looking with great interest at your [helmholtz~] pitch tracking object. I'm not asking to be lazy (I'm going to try it out for myself!), but I'm wondering if you have any general impressions of its performance as to how it compares with [sigmund~]. I'm particularly interested as to how it will do for tracking a fretless electric bass. It looks like an excellent piece of work, and I've enjoyed reading your detailed page about it. Phil Stone __**_ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/** listinfo/pd-list http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] [helmholtz~]
I'm not home at the moment but I will send you the snippet I used for pitch tracking when I get home. Have a nice day On Feb 14, 2013 5:13 PM, Phil Stone pkst...@ucdavis.edu wrote: Hi Simon, I've been using [sigmund~] with pretty good results, tracking the bass and using it to drive various things in a complex Pd setup. I'm always interested in alternative pitch trackers, though. I play a Steinberger XL, so I won't likely be carving it up to put in a hex pickup; that's kept me a way from Roland's approach (that plus the cost!). I'm still quite intrigued by what you've done; do you have any documentation about it? Thanks for writing, Phil On 2/14/13 12:48 AM, Simon Iten wrote: hi phil, what are you trying to do? do you need midi from your electric bass? or just a way to make a synth in pd? i ask because i built a gr-300 emulation for bass that works very well and with almost no latency. you can drive any oscillator within pd from that. it's all signalpath though. ideally you would use such a thing with a hexaphonic (or quadraphonic) pickup, because it's monophonic. but the same is true for helmholtz i guess. cheers, simon On Feb 14, 2013, at 1:24 AM, Phil Stone pkst...@ucdavis.edu wrote: Hi Katja, I'm looking with great interest at your [helmholtz~] pitch tracking object. I'm not asking to be lazy (I'm going to try it out for myself!), but I'm wondering if you have any general impressions of its performance as to how it compares with [sigmund~]. I'm particularly interested as to how it will do for tracking a fretless electric bass. It looks like an excellent piece of work, and I've enjoyed reading your detailed page about it. Phil Stone __**_ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/** listinfo/pd-list http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] [helmholtz~]
Hi Katja, I'm looking with great interest at your [helmholtz~] pitch tracking object. I'm not asking to be lazy (I'm going to try it out for myself!), but I'm wondering if you have any general impressions of its performance as to how it compares with [sigmund~]. I'm particularly interested as to how it will do for tracking a fretless electric bass. It looks like an excellent piece of work, and I've enjoyed reading your detailed page about it. Phil Stone ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Helmholtz Motion Verifier
A job for spectral tools I would guess. At the point spectral flux hits a first minimum and autocorrelation hits a first maximum, the string will be in stable resonance. You could use something fast like bonk or a schmitt trigger to time those from the onset and get a measure of how well the note was bowed. Actually verifying that the thing is in stick-slip Helmholtz motion is a different thing than looking at the waveform, you need a stroboscope or very high speed camera for that. BTW if you have never seen the images of Prof Andrew Davidhazy there's plenty of string sequences there. He kindly gave me some for my book cover. ajf On Sat, 11 Dec 2010 20:29:11 +0100 Ludwig Maes ludwig.m...@gmail.com wrote: How would one (and how hard or easy would it be) write a patch which does the following: Instruct the user to play a sustained note on the violin; then give feedback about how accurate Helmholtz motion is achieved; Could we measure how short the transient takes from nonHelmholtz motion to helmholtz motion? How about changing from a note on one string to one on another, ... Could we write a patch that trains the user to minimize install and end times for helmholtz motion and to somehow show a level of periodicity during the systaining period? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- Andy Farnell padawa...@obiwannabe.co.uk ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] Helmholtz Motion Verifier
How would one (and how hard or easy would it be) write a patch which does the following: Instruct the user to play a sustained note on the violin; then give feedback about how accurate Helmholtz motion is achieved; Could we measure how short the transient takes from nonHelmholtz motion to helmholtz motion? How about changing from a note on one string to one on another, ... Could we write a patch that trains the user to minimize install and end times for helmholtz motion and to somehow show a level of periodicity during the systaining period? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Helmholtz Motion Verifier
And a different question: Just like how the different non harmonic partials are shifted and forced into a harmonic compromise in a bowed string, does something similar happen when playing simultaneous harmony? I.e. would partials on 2 strings sharing bow and bridge, say fingered at a frequency ratio of close to 2:3 but not exactly 2:3 (i.e. equal temperament), also modelock to the just(=pythagorean/integer ratio) interval 2:3? would the one out of 2 slips on one string be simultaneous with one out of 3 slips on the other? On 11 December 2010 20:29, Ludwig Maes ludwig.m...@gmail.com wrote: How would one (and how hard or easy would it be) write a patch which does the following: Instruct the user to play a sustained note on the violin; then give feedback about how accurate Helmholtz motion is achieved; Could we measure how short the transient takes from nonHelmholtz motion to helmholtz motion? How about changing from a note on one string to one on another, ... Could we write a patch that trains the user to minimize install and end times for helmholtz motion and to somehow show a level of periodicity during the systaining period? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Helmholtz Motion Verifier
Interesting idea! Might be a good idea to use a pickup, since the body resonances of the instrument will smear the helmholtz motion from the signal a bit if you use mic. Regarding your second question: There will be no phase lock across 2 strings, which is why it is possible, and even likely, that double stops can be played out of tune! Can such a patch be written in Pd? Certainly! Collin ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
