There might also be something by max Matthews or Curtis Roads. 
I think I recall a chapter in the computer music tutorial. 

Sent from a phone. 

> On 27.07.2016, at 20:47, Andy Farnell <padawa...@obiwannabe.co.uk> wrote:
> 
> For impact/contact exciters you will find plenty 
> of empirical studies and theoretical models in the 
> literature by;
> 
> Davide Rocchesso
> Bruno Giodano
> Perry Cook
> 
> These are good initial paper authors to search 
> 
> all best
> Andy Farnell
> 
> 
> 
>> On Wed, Jul 27, 2016 at 07:00:02PM +0200, gm wrote:
>> 
>> Hi
>> 
>> I want to create a signal thats similar to a reverberant knocking or
>> impact sound,
>> basically decaying white noise, but with a more compact onset
>> similar to a minimum phase signal
>> and spectrally completely flat.
>> 
>> I am aware thats a contradiction.
>> 
>> Both, minimum phase impulse and fading random phase white noise are
>> unsatisfactory.
>> The minimum phase impulse does not sound reverberant.
>> 
>> The random phase noise isn't strictly flat anymore when you window
>> it with an exponentially decaying envelope
>> and also lacks a knocking impression.
>> 
>> I am also aware that a knocking impression comes from formants and
>> pronounced modes
>> related to shapes and material and not flat, which is another
>> contradiction..
>> 
>> I am not sure what the signal or phase alignment is I am looking for.
>> 
>> Also it's not a chirp cause a chirp sounds like a chirp.
>> 
>> What happens in a knock/impact besides pronounced modes or formants?
>> Somehow the phases are aligned it seems, similar to minimum phase
>> but then its
>> also random and reverberant.
>> 
>> 
>> Any ideas?
>> 
>> 
>> 
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