I wrote > Since you got DSP stuff working on an Arduino Due, it should also work on an > ESP8266, I guess...
Now I just realized you did everything with 32 bit integer math. I'll forget about audio synthesis on ESP8266 and rather check out the CHIP. Thanks so far! > Gesendet: Dienstag, 10. Mai 2016 um 00:37 Uhr > Von: "Christof Ressi" <[email protected]> > An: "cyrille henry" <[email protected]> > Cc: [email protected] > Betreff: Aw: Re: [PD] LibPd on microcontroller > > Hi, > > I've read your mail, it actually was the key source of inspiration for trying > out DSP on a microcontroller! > > > in fact, I did not recommend audio processing on hardware that did not have > > support for float arithmetic. > > (only me or crazy nerd do that). > > I might be crazy as well then :-). I just wanna give it a try and see how far > I'll get. I'm just excited about the low price of these modules, given their > rather fast speed (and of course the integrated WiFi functionality!). I'm > dreaming of tiny effect/sound modules that do a certain DSP job and > receive/send messages via WiFi. > > > > a micro controller to use is for example the cortex M4. You can find them > > on the teensy hardware. > > Apparantly the Teensy 3.x uses the non-FPU version of the cortex M4: > https://forum.pjrc.com/threads/25909-Teensy3-1-and-FPU-%28Floating-Poitn-Unit%29 > > Right now I can't see any advantage over the ESP8266. Also it costs about 4 > times as much! > > Some guy made a benchmark test between ESP8266, Teensy 3.1 and Arduino Due: > http://forum.arduino.cc/index.php?topic=337653.0 > > The ESP8266 wins for floating points (and loses clearly for integers). > > Since you got DSP stuff working on an Arduino Due, it should also work on an > ESP8266, I guess... But it's my task to find out. > > By the way, what kind of interface did you actually choose for the audio > output and have you tried several methods? > > Thanks for sharing your experience! > > Christof > > > > > > > > > > Gesendet: Montag, 09. Mai 2016 um 17:39 Uhr > > Von: "cyrille henry" <[email protected]> > > An: [email protected] > > Betreff: Re: [PD] LibPd on microcontroller > > > > hello, > > > > I recently send a mail in this list describing my experience of audio > > synthesis on microcontroler, but i did not use libpd. > > > > i did not recommend libpd for microcontrolers. > > > > in fact, I did not recommend audio processing on hardware that did not have > > support for float arithmetic. > > (only me or crazy nerd do that). > > > > a micro controller to use is for example the cortex M4. You can find them > > on the teensy hardware. > > teensy also provide a audio synthesis library, and is supported by arduino > > IDE. > > > > You can also have a look at the heavy compiler if you want to embedded a pd > > patch. > > > > Cyrille > > > > > > > > > > Le 09/05/2016 17:01, Christof Ressi a écrit : > > > Hi, > > > > > > has anyone experience in using LibPd on a microcontroller? > > > I wanna try to run some rather basic DSP code on this guy here: > > > https://www.olimex.com/Products/IoT/MOD-WIFI-ESP8266-DEV/open-source-hardware > > > There are some existing Arduino/C++ frameworks and I thought I could > > > either write my own small DSP library in C++ or use LibPd. > > > > > > I understood that LibPd is completely independed of audio drivers and > > > external libraries and since it's plain C code it should work on > > > everything that can run code. However, I have only encountered LibPd in > > > the context of other applications (processing, openFrameworks) and mobile > > > devices so far. Do you think it could work on an ESP8266? I'm also a bit > > > concerned about efficiency, as computation power is rather limited: > > > > > > "ESP8266EX is embedded with Tensilica L106 32-bit micro controller (MCU), > > > which features extra low > > > power consumption and 16-bit RSIC. The CPU clock speed is 80MHz. > > > It can also reach a maximum > > > value of 160MHz. Real Time Operation System (RTOS) is enabled. > > > Currently, only 20% of MIPS has > > > been occupied by the WiFi stack, the rest can all be used for > > > user application programming and > > > development." > > > > > > Christof > > > > > > _______________________________________________ > > > [email protected] mailing list > > > UNSUBSCRIBE and account-management -> > > > https://lists.puredata.info/listinfo/pd-list > > > > > > > _______________________________________________ > > [email protected] mailing list > > UNSUBSCRIBE and account-management -> > > https://lists.puredata.info/listinfo/pd-list > > _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
