ok so looking at a lot of posts on many different forums, videos on youtube and research from books it would seem like there are many ways round this but i am not convinced still. so basically as many of others out there, i would like t build a loop pedal, however my idea would appear to be the most straight forward, i think lol. i will lay my ideas out in order of signal flow, hopefully shouldn't be very confusing. (signal flow from a guitar or microphone btw) ok so idea 1:IMG_0005 | idea two for loop pedal construction | marcjwebb | Flickr guitar/microphone - audio pre-amp - ardiono - storage(sd card) - pre-amp - audio output. i would also like to connect 3 foot-switches which will be button 'A' - play/pause, button 'B' record (first pressed will record, second press will stop recording but keep playing), and button 'C'-stop. my main question on this is how can i get the audio to loop over and over and how do i go about being able to record say 3/4 parts on top of each other ( recording them whilst previous part plays) also with the three switches should i be linking them to the analogue inputs on the arduino and programming what they do or into the digital ones. ok so idea two, this is pretty much the same but with the addition of an independent Audio IC ship(or possibly another arduino) to act in place of the pre-amp, signal flow for idea 2:IMG_0006 | idea one for loop pedal construction | marcjwebb | Flickr guitar/microphone - audio IC Chip - arduino - storage - pre-amp - audio output. so like i said, just really the AUdio IC in place of pre-amp which is practically the same, the way i would like to store the audio is still to an SD card. so here is what i have to ask about achieving this. (i am really new to this, but have done the reasearch and have a level of understanding if it wasn't obvious lol.) which would be better, the audio IC or is the arduino enough on its own? if it is suggested the separate IC would be better, any recommendations? is the arduino capable of doing what i would like it to? i do have some code questions but would like to clear the main bits first lol can i run separate proto-boards for each section and link them all individually to the arduino and let the arduino do the busy bit? if you can help of have some suggestions then please do not hesitate to contact me with any input (even if you think its shite) many thanks guys, marc webb marcjwebbmusic@googlemail.com
nice to see people like to help , cheers guys
One day had passed without a response. That's really nothing to be snide to us about. You could have just bumped your post if you wanted, no need to be sarcastically rude.
Anyway, the Arduino is not nearly fast enough and has not nearly enough RAM to do audio recording/looping, and an SD card is even slower. Maybe one could figure a way to do it, but it would end up being a very crappy sample rate.
You could I guess use an arduino to trigger cheap voice recording modules, like those keychain type ones with record and playback buttons, but again, that will end up being a very lofi solution.
i do apologies but was getting a bit disheartened was was seeing loads of views but no responses. thank you for your input, its much appreciated. would you say that using a separate audio IC to deal with the input, looping and recording would be better? and thus using the arduino only to control the 3 switches and an lcd display? thanks again, marc