[PD] Few steps further on analog synth emulation on RPi

Tue Sep 18 10:04:07 CEST 2012

to take benefits of all the recents changes miller made to tweak pd for RPi
i don't know another way to do that
but any suggestion would be appreciated...

-- 
do it yourself
http://antoine.villeret.free.fr
http://drii.ensad.fr
--
Google lit ce mail...
si vous refusez cela, utilisez l'adresse antoine.villeret [at] free.fr pour
me contacter

2012/9/18 Pierre Massat <pimassat at gmail.com>

> Why do you need to compile it?..
>
>
>
> 2012/9/17 Cyrille Henry <ch at chnry.net>
>
>> hello,
>> yes, you are right, there is a typo.
>> it's
>> git clone git://pure-data.git.**sourceforge.net/gitroot/pure-**
>> data/pure-data<http://pure-data.git.sourceforge.net/gitroot/pure-data/pure-data>
>> (or git clone git://pure-data.git.**sourceforge.net/gitroot/pure-**
>> data/pure-data<http://pure-data.git.sourceforge.net/gitroot/pure-data/pure-data>pure-data)
>>
>>
>> try
>> sudo apt-get install autoconf
>>
>> thanks for the feedback, we will correct the documentation.
>>
>> cheers
>> c
>>
>>
>>
>> Le 17/09/2012 20:44, m.e.grimm a écrit :
>>
>>  hey,
>>>
>>> so you know
>>>
>>> with this i get:
>>>
>>> pi at raspberrypi ~/Desktop/pure-data/src $ git clone
>>> git://pure-data.git.**sourceforge.net/gitroot/pure-**data/<http://pure-data.git.sourceforge.net/gitroot/pure-data/>pure-data
>>> Cloning into 'pure-data'...
>>> fatal: The remote end hung up unexpectedly
>>>
>>> so i have to do:
>>>
>>> git clone git://pure-data.git.**sourceforge.net/gitroot/pure-**
>>> data/pure-data<http://pure-data.git.sourceforge.net/gitroot/pure-data/pure-data>
>>> (no space)
>>>
>>> but then i get:
>>>
>>> pi at raspberrypi ~/Desktop/pure-data/src $ autoconf-bash: autoconf:
>>> command not found
>>>
>>> where is autoconf?
>>>
>>> m
>>>
>>> On Sun, Sep 16, 2012 at 6:38 PM, Antoine Villeret
>>> <antoine.villeret at gmail.com> wrote:
>>>
>>>> hi all, here is an up-to-date tutorial to make an analog synth with a
>>>> Raspberry Pi and pd :
>>>>
>>>> 1. installing raspbian on a SD card
>>>>
>>>> see instruction :
>>>> http://www.raspbian.org/
>>>> http://elinux.org/RPi_Easy_SD_**Card_Setup<http://elinux.org/RPi_Easy_SD_Card_Setup>
>>>>
>>>> connect a keyboard, a mouse, an HDMI screen and an ethernet cable with
>>>> DHCP
>>>> (to get internet access) and boot on the SD card to configure the OS :
>>>> - expand root
>>>> - change keyboard
>>>> - change password
>>>> - change local (fr utf8)
>>>> - change memory split : minimum allocated to video
>>>> - enable ssh
>>>> - boot : no desktop
>>>> - update
>>>>
>>>> sudo apt-get update / upgrade
>>>> sudo reboot
>>>> log in and start graphical interface :
>>>> startx
>>>>
>>>> 2. installing puredata
>>>>
>>>> sudo apt-get install git tk8.5-dev libasound2-dev subversion
>>>> downloading latest pd :
>>>>
>>>> git clone git://pure-data.git.**sourceforge.net/gitroot/pure-**data/<http://pure-data.git.sourceforge.net/gitroot/pure-data/>pure-data
>>>> cd pure-data/src
>>>> autoconf
>>>> ./configure CFLAGS="-mfpu=vfp -mfloat-abi=hard"
>>>> make
>>>> sudo make install
>>>>
>>>> It takes around 20min to build, be patient.
>>>> you can start pd using the « pd » command
>>>>
>>>> 3. optimising the system for pd :
>>>>
>>>> sudo leafpad /etc/security/limits.conf
>>>> or try nano if you don’t start an X server
>>>> add
>>>> * - rtprio 99
>>>> * - memlock 1000000000
>>>> start pd and go to media > preference > startup
>>>> add the following flag in the startup flag field :
>>>> -rt -alsa -noadc -audiobuf 25
>>>>
>>>> then apply and restart pd.
>>>>
>>>> 4. test
>>>>
>>>> download analog synth emulation patch by Cyrille Henry here :
>>>> svn checkout
>>>> https://pure-data.svn.**sourceforge.net/svnroot/pure-**
>>>> data/trunk/externals/nusmuk/**nusmuk-audio/<https://pure-data.svn.sourceforge.net/svnroot/pure-data/trunk/externals/nusmuk/nusmuk-audio/>
>>>> ~/nusmuk-audio
>>>> cd ~/nusmuk-audio
>>>> make
>>>> cd examples
>>>> pd analog_synth_emulation.pd
>>>>
>>>> 5. Performance :
>>>>
>>>> The analog output is very poor now. Some (like Miller) are working on
>>>> improving it (thanks for their work). The signal to noise ratio is low
>>>> and
>>>> there is also some quantization distorsion.
>>>>
>>>> On the other hand, one can output some audio through HDMI. We use an
>>>> HDMI
>>>> display to convert audio and to send it to good quality loudspeaker. We
>>>> later tried a USB soundcard (Edirol UA-1A) which works out-of-the-box.
>>>>
>>>> We tried to reduce latency without hearing click with the Cyrille’s
>>>> patch,
>>>> here are the results :
>>>> 10 ms latency with USB soundcard
>>>> 20 ms latency with integrated HDMI audio
>>>> We also tried to input audio with USB soundcard but audio is crackly as
>>>> soon
>>>> as input is enable (with output too).
>>>>
>>>> 6. Getting data from real world
>>>>
>>>> Most of MIDI-USB interface should work out-of-the-box.
>>>> With Edirol UM-1EX we get a MIDI loopback between 30 and 35ms.
>>>>
>>>> HID works great.
>>>> svn checkout
>>>> https://pure-data.svn.**sourceforge.net/svnroot/pure-**
>>>> data/trunk/externals/hid/<https://pure-data.svn.sourceforge.net/svnroot/pure-data/trunk/externals/hid/>
>>>> ~/hid
>>>> cd hid/
>>>> make
>>>> pd hid-help.pd
>>>>
>>>> The Byron interface (http://www.1010.co.uk/org/**byron.html<http://www.1010.co.uk/org/byron.html>)
>>>> is one of the
>>>> cheapest way to make a CV-to-computer interface.
>>>>
>>>> A TCP loop on a local computer takes less than 1.5 ms.
>>>>
>>>> 7. Autologin
>>>>
>>>> To enable auto login, we follow this :
>>>> http://elinux.org/RPi_Debian_**Auto_Login<http://elinux.org/RPi_Debian_Auto_Login>.
>>>> And to start pd at startup, we
>>>> follow the steps on the same page but replace startx by ~/autostart.sh
>>>> wich
>>>> is a script like this :
>>>> pd -nogui -audiodev 3 -open
>>>> ~/nusmuk-audio/examples/**analog_synth_emulation.pd
>>>>
>>>> ______________________________**_________________
>>>> Pd-list at iem.at mailing list
>>>> UNSUBSCRIBE and account-management ->
>>>> http://lists.puredata.info/**listinfo/pd-list<http://lists.puredata.info/listinfo/pd-list>
>>>>
>>>>
>>>
>>>
>>>
>> ______________________________**_________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/**
>> listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>
>>
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20120918/3e65bed1/attachment.htm>