Re: spectral freezing...?
| Date | 2006-04-28 16:26 |
| From | Victor Lazzarini |
| Subject | Re: spectral freezing...? |
There is no opcode as such at the moment, but it's good that you asked because you reminded me to do it, which should be simple. At the moment what you can do is to freeze an analysed file, by keeping the value of ktim in pvsfread fixed. Victor > > I wrote a class for Victor's SndObj library to do this and > once I was done realised that looping a small snippet of > the signal repeatedly resulting in pretty much the same > sound as a 'spectral freeze', plus if was less CPU > intensive. As for real spectral freezing in Csound, I > ain't too sure. > > Rory. > > Peiman Khosravi wrote: > > Hello everyone, > > > > I am back again with more questions! > > > > Is there a way to have a real-time spectral freezing > > instrument using the pvs opcodes? I was thinking of > > perhaps using the binit or pvsftw opcodes (?) > > > > Any advice will be much appreciated. > > > > Many thanks > > > > Peiman > -- > Send bugs reports to this list. > To unsubscribe, send email to > csound-unsubscribe@lists.bath.ac.uk |
| Date | 2006-04-28 16:56 |
| From | "Dr. Richard Boulanger" |
| Subject | Re: spectral freezing... - and more? |
Victor, Hope you are well. While you are at it making us all a cool new *spectral freezing* opcode (and maybe other variants!) I would love to suggest that we have been missing a nice sweepable format-filter opcode as well - one that would let us use an f-table or linseg to sweep through the vowels (formant-tables) to do vocal synthesis, talk-box, and other effects. They have a pretty nice one in the nord modular and in reaktor. Dr. B. On Apr 28, 2006, at 11:26 AM, Victor Lazzarini wrote: > There is no opcode as such at the moment, but it's > good that you asked because you reminded me to > do it, which should be simple. > > At the moment what you can do is to freeze an > analysed file, by keeping the value of ktim in > pvsfread fixed. > > Victor > >> >> I wrote a class for Victor's SndObj library to do this and >> once I was done realised that looping a small snippet of >> the signal repeatedly resulting in pretty much the same >> sound as a 'spectral freeze', plus if was less CPU >> intensive. As for real spectral freezing in Csound, I >> ain't too sure. >> >> Rory. >> >> Peiman Khosravi wrote: >>> Hello everyone, >>> >>> I am back again with more questions! >>> >>> Is there a way to have a real-time spectral freezing >>> instrument using the pvs opcodes? I was thinking of >>> perhaps using the binit or pvsftw opcodes (?) >>> >>> Any advice will be much appreciated. >>> >>> Many thanks >>> >>> Peiman >> -- >> Send bugs reports to this list. >> To unsubscribe, send email to >> csound-unsubscribe@lists.bath.ac.uk > -- > Send bugs reports to this list. > To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk |
| Date | 2006-04-28 19:01 |
| From | Peiman Khosravi |
| Subject | Re: spectral freezing...? |
Hello, Thanks for your replies. It would indeed be very nice to have a spectral freezing opcode. Although looping a short fragment from the buffer would achieve a similar effect it would not be very easy to use in real-time performance (where the signal can be instantly captured and frozen): I am at the moment using the Csound~ max external for real-time FFT processing. Just a thought: it would perhaps be nice to have the freeze added as a function to pvsynth (?). Thanks Peiman On 28 Apr 2006, at 16:26, Victor Lazzarini wrote: > There is no opcode as such at the moment, but it's > good that you asked because you reminded me to > do it, which should be simple. > > At the moment what you can do is to freeze an > analysed file, by keeping the value of ktim in > pvsfread fixed. > > Victor > >> >> I wrote a class for Victor's SndObj library to do this and >> once I was done realised that looping a small snippet of >> the signal repeatedly resulting in pretty much the same >> sound as a 'spectral freeze', plus if was less CPU >> intensive. As for real spectral freezing in Csound, I >> ain't too sure. >> >> Rory. >> >> Peiman Khosravi wrote: >>> Hello everyone, >>> >>> I am back again with more questions! >>> >>> Is there a way to have a real-time spectral freezing >>> instrument using the pvs opcodes? I was thinking of >>> perhaps using the binit or pvsftw opcodes (?) >>> >>> Any advice will be much appreciated. >>> >>> Many thanks >>> >>> Peiman >> -- >> Send bugs reports to this list. >> To unsubscribe, send email to >> csound-unsubscribe@lists.bath.ac.uk > -- > Send bugs reports to this list. > To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk |
| Date | 2006-04-28 20:35 |
| From | Rory Walsh |
| Subject | Re: spectral freezing...? |
It shouldn't be too hard to capture the signal and freeze it in the time-pressure domain, in realtime; especially using the fltk opcodes. Obviously this only works well with sustained sounds and sounds that are longer in duration than the loop time so one has to be sharp to capture the sound in time! See the .csd file below. You can start and stop the freezing by turning the freeze button on/off. Rory. |
| Date | 2006-04-28 21:06 |
| From | Peiman Khosravi |
| Subject | Re: spectral freezing...? |
Hi Rory, Thanks for that it works very nicely! Peiman On 28 Apr 2006, at 20:35, Rory Walsh wrote: > It shouldn't be too hard to capture the signal and freeze it in the > time-pressure domain, in realtime; especially using the fltk > opcodes. Obviously this only works well with sustained sounds and > sounds that are longer in duration than the loop time so one has to > be sharp to capture the sound in time! See the .csd file below. You > can start and stop the freezing by turning the freeze button on/off. > > Rory. > > > |