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Text of the page (random words):
nostatic software dev blog monday february 10 2025 state of nam on raspberry pi it s been almost two years now since i first posted a video of neural amp modeler captures running on my raspberry pi 4 a lot has changed since then originally the nam playback code was extremely expensive so much so that a raspberry pi 4 could only manage to run feather models because i wanted to run more accurate models nam optimization became a bit of a pet project with some optimizations to the nam core codebase we were able to increase performance by more than 2x that combined with more widespread availability of a 64bit os for the pi made standard nam captures possible with plenty of headroom left for a cabinet ir and some light effects more recently i have been working on my own implementation of wavenet and lstm models with a focus on performance the result of which you can see running in the image above in my stompbox app note the numbers in the bottom left that is the realtime cpu usage as reported by jack this is running a standard nam capture audio buffer size is 96 samples cpu usage of standard models is now low enough that i can easily run two models at once with plenty of cpu left over for ir and effects i can even just barely run three models at once 5 comments saturday april 15 2023 this boss sd 1 pedal does not exist i ve been messing around lately with combining neural amp modeler with another open source project i ve contributed to in the past livespice livespice allows you to simulate audio circuits in real time which is very cool the disadvantage it has is that it is very cpu heavy it s cpu usage is also not super consistent but can be spiky which makes it hard to use in a live low latency environments without getting audio dropouts it is however very easy to use it to generate training data for neural amp modeler so that s what i did because it uses a simulation of the pedal circuit the generated training audio has none of the added noise that is difficult to fully avoid when capturing actual pedals this idealized version of the pedal should be even easier for the neural net model to learn and indeed it is here is the esr of a feather model the smallest least cpu intensive default nam model type it shows 0 000 but it was actually around 0 0001 you can get the resulting nam model here on tonehunt 2 comments labels audio guitar wednesday march 8 2023 neural amp modeler nam running on raspberry pi recently i ve been messing around with and contributing to the neural amp modeler project it uses machine learning more specifically the wavenet model to create captures of amplifiers and distortion pedals it has been gaining a lot of traction recently with lots of people modeling their equipment the resulting models are very good i ve now got it integrated into my raspberry pi pedalboard the audio for the above video was recorded on a raspberry pi 4 the hardware on the pedalboard consists of raspberry pi 4 hotone jogg audio interface hotone ampero control midi controller wio terminal used for a serial based display my pedalboard is using a custom app on top of jack audio but i have also made a neural amp modeler lv2 plugin available 26 comments labels audio guitar linux music tuesday september 13 2022 chord data for jazz standards i recently started playing jazz on bass guitar so naturally i also recently started writing software for facilitating jazz practice as a basis for a number of my projects i needed access to chord data from a corpus of jazz standards the best source i found was the database of user submitted scores for the ireal mobile app https www irealpro com main playlists i ve been converting these to an easy to parse json format the current database of songs can be found here https github com mikeoliphant jazzstandards here is an example score title alone together composer schwartz arthur key d rhythm medium swing sections label a mainsegment chords dm6 em7b5 a7b9 dm6 em7b5 a7b9 dm6 am7b5 d7b9 gm7 gm7 bm7 e7 gm7 c7 fmaj7 em7b5 a7b9 endings chords dmaj7 d em7b5 a7b9 chords dmaj7 dmaj7 label b mainsegment chords am7b5 d7b9 gm6 gm6 gm7b5 c7b9 fmaj7 em7b5 a7b9 endings label a mainsegment chords dm6 em7b5 a7b9 dm6 em7b5 a7b9 dm6 bm7b5 bb7 a7b9 dm6 em7b5 a7b9 endings 0 comments labels music friday october 29 2021 arduino sketch for tft display rendering using serial commands i ve been using a seeed studio wio terminal as an external display for a raspberry pi i initially wrote an arduino sketch that took high level application specific commands over serial and rendered appropriate display elements this has the disadvantage that adding ui features required updating the arduino code which is more of a pain and slower to iterate on instead i m now planning on sending rendering commands over the serial interface turning the microcontroller into a general purpose rendering device i ve thrown my initial code up on github here github com mikeoliphant serialtft it currently only supports a small set of commands for rendering rectangles and text i ll be adding more features as i need them 0 comments labels arduino graphics sunday october 17 2021 speeding up arduino tft tft_espi writes i ve been recently playing around with arduino microcontroller stuff specifically a seeed studio wio terminal playing around with the tft display i noticed that drawing to it was pretty slow after doing some research i found out that direct tft writes are indeed quite slow but there is an easy way around it the tft_espi graphics library a modified version of which is used by the wio terminal provides a sprite class that can be used to do quick tft writes if you have enough memory which the wio terminal just barely does you can create a full screen sized sprite the sprite class supports the same drawing api as the main tft class so it is pretty easy to convert code that is writing directly to the tft to use a sprite instead to initialize it do this tft_espi tft tft_espi tft_esprite screen tft_esprite tft in your setup after initializing the tft do this screen createsprite tft width tft height then use screen instead of tft for all of your drawing calls when you want to update the tft with the current state of your sprite do this screen pushsprite 0 0 that s it the result is a display that will update much faster one caveat is that this method uses up the vast majority of the wio terminal s ram it works fine for me since my application is not otherwise particularly memory hungry more complicated applications using wifi for example may run into problems if that happens a good if more complicated solution would be to use a smaller screen area sprite and do targeted writes to sub areas of the screen 0 comments labels arduino graphics monday october 4 2021 fixing hotone jogg asio no devices connected issue i recently ordered a hotone jogg guitar audio interface pedal and had trouble getting the windows 10 asio drivers to work turns out that asio support was added with a firmware update and the pedal i got had the old firmware if you are having this problem you need to get the updated firmware from here https www hotoneaudio com support 2 scroll down until you see jogg firmware with hotone asio driver support and click on the link to download the firmware follow the included instructions you have to open up the unit to flip a dip switch which is not very user friendly and you should soon be good to go 0 comments labels audio guitar older posts home my github github com mikeoliphant contact name email message tags game xna xblig graphics c kff audio terrain blockzombies wpf tunescape music hlsl linux guitar wp7 ld48 android art game design ios tv3d arduino gadgets 3ds nintendo psm vita xml networking unmanaged vista water wireless blog archive 2025 1 february 1 state of nam on raspberry pi 2023 2 april 1 march 1 2022 1 september 1 2021 5 october 4 january 1 2020 4 november 1 august 1 january 2 2016 2 september 1 march 1 2013 5 october 1 august 1 february 2 january 1 2012 13 december 1 august 2 june 1 may 1 april 2 march 1 february 2 january 3 2011 35 december 2 october 3 september 2 august 4 july 2 june 3 may 1 april 6 march 4 february 3 january 5 2010 44 december 6 november 4 october 5 september 6 august 2 july 5 june 4 may 2 april 3 march 4 february 3 2009 15 december 1 november 1 october 1 september 2 august 5 march 3 january 2 2008 10 december 6 october 2 june 1 may 1 2007 9 december 4 november 2 august 1 july 2 my food blog menu in progress sites i like box2d xna cg textures dafont com experimental gameplay project gamedev net gametrailers com graphics runner ign indie games blog ludum dare the freesound project tigsource wonderfl