Re: tanh~ distortion without expr~?

and if you really want a deep dive, here's a quarter-long course (with 
crude videos, plus downloadable patches)...

https://msp.ucsd.edu/syllabi/206.15w/index.htm

cheers
Miller

On 12/11/25 11:30 AM, Simon Iten wrote:
> Yep, this works great!! Here is the implementation and another one, that is also quite nice…
>
> (It is a patch to be compiled with heavy, but you get the idea)
>
>
>
>
>> Am 11.12.2025 um 12:35 schrieb Peter P. <[email protected]>:
>>
>> Wow, quick and neat -merci bien Cyrille!
>> P
>>
>> * cyrille henry <[email protected]> [2025-12-11 12:11]:
>>> hello,
>>>
>>> For a distortion, you can use f(x) = x*(27 + x²) / (27 + 9*x²) as a good enough tanh approximation. (x need to be clipped between -3 and 3)
>>> https://urldefense.com/v3/__https://www.desmos.com/calculator/dxg70xbtne?lang=fr__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfIPJH1PfA$
>>>
>>> Cheers
>>> C
>>>
>>>
>>>
>>> Le 11/12/2025 à 12:01, Peter P. a écrit :
>>>> Hi,
>>>>
>>>> is there a vanilla way to implement tanh~ distortion without using expr~?
>>>>
>>>> Thanks!
>>>> P
>>>>
>>>> ---
>>>> [email protected] - the Pure Data mailinglist
>>>> https://urldefense.com/v3/__https://lists.iem.at/hyperkitty/list/[email protected]/message/WDXKOYLK6LF5XN2UFMODWREXAV2MIQR3/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfLMPfJYtQ$
>>>>
>>>> To unsubscribe send an email to [email protected] mailing list
>>>> UNSUBSCRIBE and account-management -> https://urldefense.com/v3/__https://lists.iem.at/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfJUKLgW-g$
>>>>
>>>
>>> ---
>>> [email protected] - the Pure Data mailinglist
>>> https://urldefense.com/v3/__https://lists.iem.at/hyperkitty/list/[email protected]/message/X3SMOHZDQUF73N3ZHQIUQ45NQWOR45ZR/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfKSv210mA$
>>>
>>> To unsubscribe send an email to [email protected] mailing list
>>> UNSUBSCRIBE and account-management -> https://urldefense.com/v3/__https://lists.iem.at/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfJUKLgW-g$
>> ---
>> [email protected] - the Pure Data mailinglist
>> https://urldefense.com/v3/__https://lists.iem.at/hyperkitty/list/[email protected]/message/QWFI7EJH5BRAA7HGHPZKWITDBWIIDPXW/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfLH_ZKvSw$
>>
>> To unsubscribe send an email to [email protected] mailing list
>> UNSUBSCRIBE and account-management -> https://urldefense.com/v3/__https://lists.iem.at/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfJUKLgW-g$
>>
>
> ---
> [email protected] - the Pure Data mailinglist
> https://urldefense.com/v3/__https://lists.iem.at/hyperkitty/list/[email protected]/message/NRJRL7CP3FUDOVKU76FZATZCRWE7BNRD/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfJ6t5Ck7g$
>
> To unsubscribe send an email to [email protected] mailing list
> UNSUBSCRIBE and account-management -> https://urldefense.com/v3/__https://lists.iem.at/__;!!Mih3wA!Gwvs5Ara2rK8oYyZCPw8DXtirri849uMbi5-AufUJYhJCcLw0CTaQRpLBfFjNej0Br0_PfJUKLgW-g$


---
[email protected] - the Pure Data mailinglist
https://lists.iem.at/hyperkitty/list/[email protected]/message/HU7EJS7XKDFPRI3OAEMHHKBOFV7EWYB2/

To unsubscribe send an email to [email protected] mailing list
UNSUBSCRIBE and account-management -> https://lists.iem.at/