Re: [PD] overdriven speaker

2011-03-10 Thread -
Hi the papers on http://www.klippel.de/pubs/papers.asp where quiet interesting. But the page went down. It looks like it went to: http://www.klippel.de/nc/know-how/literature/papers.html?sword_list[0]=paper&sword_list[1]=speaker Greetings Am 16.10.2010 06:46, schrieb Martin Schied: > Hi! > > I'm

Re: [PD] overdriven speaker

2010-11-14 Thread Mathieu Bouchard
On Wed, 10 Nov 2010, - wrote: By the way it is kind of sad that everyone (including me) always uses tanh, while there are much much more functions out there which could be better suited, produce less high harmonics (aliasing!) or just sound better. A while ago I took a small dive into this top

Re: [PD] overdriven speaker

2010-11-04 Thread Martin Schied
Hi Mathieu - again, sorry for the big delay. I was a bit busy the past 2 weeks. On 22.10.2010 07:35, Mathieu Bouchard wrote: On Thu, 21 Oct 2010, Martin Schied wrote: Isn't the heat proportional to the mean power ? Then you just do [*~] with itself and then some kind of [rpole~] to a

Re: [PD] overdriven speaker

2010-10-22 Thread Martin Schied
On 22.10.2010 06:05, Mathieu Bouchard wrote: On Fri, 22 Oct 2010, Martin Schied wrote: I wanted to use a fairly high a < 1 because then the phase for all frequencies is approximately 90° off like for the ideal a=1. Using slightly smaller factors and comparing input / output didn't satisfy my

Re: [PD] overdriven speaker

2010-10-21 Thread Mathieu Bouchard
On Thu, 21 Oct 2010, Martin Schied wrote: Isn't the heat proportional to the mean power ? Then you just do [*~] with itself and then some kind of [rpole~] to account for the accumulation thereof. After that I don't really know what to do with that. one could feed the output of thi

Re: [PD] overdriven speaker

2010-10-21 Thread Mathieu Bouchard
On Fri, 22 Oct 2010, Martin Schied wrote: I wanted to use a fairly high a < 1 because then the phase for all frequencies is approximately 90° off like for the ideal a=1. Using slightly smaller factors and comparing input / output didn't satisfy my expectations. maybe that would't matter at all

Re: [PD] overdriven speaker

2010-10-21 Thread Martin Schied
On 22.10.2010 03:10, Mathieu Bouchard wrote: On Fri, 22 Oct 2010, Martin Schied wrote: yeah, but this is often the case when messing things up in pd. I tried rpole~ 1 with sinewaves first which worked as integrator, but already had different results for the output of rpole~ if the wave start

Re: [PD] overdriven speaker

2010-10-21 Thread Martin Schied
Hi! I agree with Martin Peach in most points and want to add some sentences. On 22.10.2010 01:17, Martin Peach wrote: A perfect speaker will reproduce the sound exactly by transforming the instantaneous voltage to a displacement in or out. That's called 'compliance' in the speaker biz. The id

Re: [PD] overdriven speaker

2010-10-21 Thread Mathieu Bouchard
On Fri, 22 Oct 2010, Martin Schied wrote: yeah, but this is often the case when messing things up in pd. I tried rpole~ 1 with sinewaves first which worked as integrator, but already had different results for the output of rpole~ if the wave started at 0 or pi/2 (which is logic, but I didn't t

Re: [PD] overdriven speaker

2010-10-21 Thread Martin Schied
Hi! On 21.10.2010 07:17, Mathieu Bouchard wrote: On Thu, 21 Oct 2010, Martin Schied wrote: It shouldn't be too hard to do this integration with basic pole / zero objects. A problem using integration only is the lack of mechanical damping. A real speaker goes back to x=0 if no signal is pres

Re: [PD] overdriven speaker

2010-10-21 Thread Martin Peach
A perfect speaker will reproduce the sound exactly by transforming the instantaneous voltage to a displacement in or out. That's called 'compliance' in the speaker biz. The ideal speaker has zero mass and is totally rigid. So nonlinearities will show up: 1> when the speaker is massive and can't

Re: [PD] overdriven speaker

2010-10-21 Thread Martin Schied
Hi! Looking at power and air pressure - we don't have to care about them as long as we don't want to include thermal effects Isn't the heat proportional to the mean power ? Then you just do [*~] with itself and then some kind of [rpole~] to account for the accumulation thereof. After that

Re: [PD] overdriven speaker

2010-10-20 Thread Mathieu Bouchard
On Thu, 21 Oct 2010, Martin Schied wrote: It shouldn't be too hard to do this integration with basic pole / zero objects. A problem using integration only is the lack of mechanical damping. A real speaker goes back to x=0 if no signal is present. A simple integrator doesn't right. That's why

Re: [PD] overdriven speaker

2010-10-20 Thread Mathieu Bouchard
On Thu, 21 Oct 2010, Martin Schied wrote: The peak output voltage of the amplifier is equal for all frequencies and defines the maximum acceleration the cone can experience. So we can say the acceleration is Alright, I should have thought about it. I mean, it's great that you wrote it, and i

Re: [PD] overdriven speaker

2010-10-20 Thread Martin Schied
It shouldn't be too hard to do this integration with basic pole / zero objects. A problem using integration only is the lack of mechanical damping. A real speaker goes back to x=0 if no signal is present. A simple integrator doesn't - so the 'simulated' cone would just fly away slowly. So som

Re: [PD] overdriven speaker

2010-10-20 Thread Martin Schied
Hi! Sorry for answering this late. And I was wrong in my last mail. The signal doesn't have to be differentiated but integrated (like you already did in your first post).? The signal in pd represents the current flowing through the speaker's coil (if we assume it isn't capacitive or inducti

Re: [PD] overdriven speaker

2010-10-19 Thread Mathieu Bouchard
On Tue, 19 Oct 2010, Martin Schied wrote: using the first deviation as modulation should be more physically correct but sounded very tinny and thin. how do you compute that ?... how is the pressure wave supposed to relate to the digital wave ? I don't expect it to be a 1:1 mapping... my mech

Re: [PD] overdriven speaker

2010-10-19 Thread Mathieu Bouchard
On Mon, 18 Oct 2010, Pierre Massat wrote: Sounds really cool with a guitar and with high gain (around 50). What's nice is the change in the spectrum depending on the volume of the input. But all waveshapers also do change the spectrum according to the volume (except those that are linear, whi

Re: [PD] overdriven speaker

2010-10-18 Thread Martin Schied
really nice distortion. I just fed it a few drum loops and it sounds very similar to drunken DJs at 5am... I added a lop~ 200 before the modulation going into vd~ to reduce harsh sounds a bit, emphasizes the nice "pow" sound for bassdrums. using the first deviation as modulation should be mor

Re: [PD] overdriven speaker

2010-10-18 Thread Pierre Massat
Sounds really cool with a guitar and with high gain (around 50). What's nice is the change in the spectrum depending on the volume of the input. Le 18 octobre 2010 20:13, Mathieu Bouchard a écrit : > On Mon, 18 Oct 2010, Pierre Massat wrote: > > This is getting interesting. I'm sorry, how did y

Re: [PD] overdriven speaker

2010-10-18 Thread Mathieu Bouchard
On Mon, 18 Oct 2010, Pierre Massat wrote: This is getting interesting. I'm sorry, how did you do this with vd~? C'est juste ça (en attachement). En fait, ma vraie patch est plus complexe, mais j'essaye pas vraiment de reproduire le phénomène physique de toute façon. Mes formules de vitesse s

Re: [PD] overdriven speaker

2010-10-18 Thread Pierre Massat
This is getting interesting. I'm sorry, how did you do this with vd~? 2010/10/18 Mathieu Bouchard > On Sat, 16 Oct 2010, Martin Schied wrote: > > field) and also time variant (temperature) and modulation (doppler effect >> / amplitude modulation) effects. I don't know which effects have a stron

Re: [PD] overdriven speaker

2010-10-18 Thread Mathieu Bouchard
On Sat, 16 Oct 2010, Martin Schied wrote: field) and also time variant (temperature) and modulation (doppler effect / amplitude modulation) effects. I don't know which effects have a stronger or weaker influence, for a sinewave, a peak of ±1 millimètre at 1 kiloHertz travels like y = 0.001

Re: [PD] overdriven speaker

2010-10-15 Thread Martin Schied
Hi! I'm no speaker modeling expert at all, but I can try to describe what produces sounds in an overloaded speaker. There are various sources of distortion, symmetrical (mechanic suspension) and asymmetrical (magnetic field) and also time variant (temperature) and modulation (doppler effect /

Re: [PD] overdriven speaker

2010-10-15 Thread -
Thank you for your answer, but as I wrote I don't want the sound of simple clipping like clip~, tanh~ or overdrive~. I want the sound of a speaker crying for mercy because you put just too much through it. But I don't know where to start. I know there are complex distortion effects, which are able

[PD] overdriven speaker

2010-10-14 Thread -
Hi, does anyone know how to simulate the sound of an overdriven speaker? You know the crunchy sound when you torture it with a strong bass. It's nowhere near the sound of an normal overdrive with some kind of clipping. Greetings - ___ Pd-list@iem.at ma