oh that's right, plus there are things such as instantaneous frequency and instantaneous phase. i think one potential application for sinusoidal modeling is formant-corrected pitch shifting, i think i'm familiar with the Zynaptiq stuff
On Mon, Sep 6, 2021 at 2:56 PM Ian Esten <[email protected]> wrote: > Wavelets are a special case of a filterbank. There’s no sinusoidal > modeling in them, so no sweep or ramp rate. > > On Monday, September 6, 2021, Zhiguang Zhang <[email protected]> wrote: > >> I'm no expert on wavelets but does what you mention approach some of the >> parameters of wavelets i.e. sweep rate and ramp rate? I know they can be >> useful for decomposing non-stationary signals. Also it seems strange to >> hear of 'other' parameters within phase vocoder (DFT/FFT) sinusoidal >> components but perhaps that's just what was taught in school >> >> >> Zhiguang >> >> On Mon, Sep 6, 2021, 1:46 PM robert bristow-johnson < >> [email protected]> wrote: >> >>> i think i referenced a paper from Masri in my paper. and another from >>> Peeters and Rodet. i can't remember but there was some difference. i >>> think the other guys were doing sinusoidal modeling and i was doing a >>> modified phase vocoder. >>> >>> perhaps the common point we had is that every sinusoidal component can >>> have more than amplitude, frequency, and phase in its representation. it >>> can also have the frequency sweep rate and amplitude ramp rate put into its >>> description. >>> >>> i remember revisiting this gaussian-windowed chirp thing at Stack >>> Exchange. >>> >>> >>> https://dsp.stackexchange.com/questions/24191/stft-multiplied-with-gaussian-window-vs-stft-multiplied-by-rectangular-window/36797#36797 >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__dsp.stackexchange.com_questions_24191_stft-2Dmultiplied-2Dwith-2Dgaussian-2Dwindow-2Dvs-2Dstft-2Dmultiplied-2Dby-2Drectangular-2Dwindow_36797-2336797&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=w_CiiFx8eb9uUtrPcg7_DA&m=GGHt4WkecJQdVBKdw8FKiqhugSze_Ndss0xpw6SGfLU&s=oYZYmGS9k_uURajW6Z9eJXbAMQFpyAm_TgS5o34fCoE&e=> >>> >>> >>> https://dsp.stackexchange.com/questions/48876/does-a-chirp-like-generalization-of-the-gabor-or-morlet-wavelets-definitions-e >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__dsp.stackexchange.com_questions_48876_does-2Da-2Dchirp-2Dlike-2Dgeneralization-2Dof-2Dthe-2Dgabor-2Dor-2Dmorlet-2Dwavelets-2Ddefinitions-2De&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=w_CiiFx8eb9uUtrPcg7_DA&m=GGHt4WkecJQdVBKdw8FKiqhugSze_Ndss0xpw6SGfLU&s=_6xjVngC_BCX1K_YMErfGCh_WYnO67_4Yo_QrGj4ogk&e=> >>> >>> -- >>> >>> r b-j . _ . _ . _ . _ [email protected] >>> >>> "Imagination is more important than knowledge." >>> >>> >>> > On 09/06/2021 1:14 PM STEFFAN DIEDRICHSEN < >>> [email protected]> wrote: >>> > >>> > >>> > I think it’s kind of limited by the correct measurement of the >>> amplitude and/or frequency modulation. There was some work in the late >>> 90’s, I remember a paper from Paul Masri investigating options to measure >>> those parameters. >>> > >>> > Best, >>> > >>> > Steffan >>> > >>> > >>> > >>> > > On 05.09.2021|KW35, at 04:29, robert bristow-johnson < >>> [email protected]> wrote: >>> > > >>> > > >>> > > https://ieeexplore.ieee.org/document/969581 >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__ieeexplore.ieee.org_document_969581&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=w_CiiFx8eb9uUtrPcg7_DA&m=GGHt4WkecJQdVBKdw8FKiqhugSze_Ndss0xpw6SGfLU&s=MHifQsiCsSPM6CISW54A9RPtytVqOtf-5awF_E_Me8E&e=> >>> > > >>> > > >>> https://www.researchgate.net/publication/3927319_Intraframe_time-scaling_of_nonstationary_sinusoids_within_the_phase_vocoder >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_publication_3927319-5FIntraframe-5Ftime-2Dscaling-5Fof-5Fnonstationary-5Fsinusoids-5Fwithin-5Fthe-5Fphase-5Fvocoder&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=w_CiiFx8eb9uUtrPcg7_DA&m=GGHt4WkecJQdVBKdw8FKiqhugSze_Ndss0xpw6SGfLU&s=CqMhcl5GwQKfliXhH-jnPoB5uha3T6BYq7ae8rl0xQE&e=> >>> ( >>> https://www.researchgate.net/publication/3927319_Intraframe_time-scaling_of_nonstationary_sinusoi%20ds_within_the_phase_vocoder >>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_publication_3927319-5FIntraframe-5Ftime-2Dscaling-5Fof-5Fnonstationary-5Fsinusoi-2520ds-5Fwithin-5Fthe-5Fphase-5Fvocoder&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=w_CiiFx8eb9uUtrPcg7_DA&m=GGHt4WkecJQdVBKdw8FKiqhugSze_Ndss0xpw6SGfLU&s=hVB_tLkygTyQWmydMPoo6UgVlPTcdF3BB-0z2hML1Q4&e=> >>> ) >>> > > >>> > > I still like the idea but it turned out to make little difference >>> audibly. >>> > > >>> > > -- >>> > > >>> > >>> >>> . >>> . >>> . >>> >>
