BloodyCactus wrote:how are you reading midi? is it external fed into the pi uart?
BloodyCactus wrote:the onboard audio is really bad to the point one shouldnt use it.
BloodyCactus wrote:i _ASSUME_ the wavetable l/r output pins are analogue sound...
d0pefish wrote:I totally agree with disregarding the internal audio - it is dreadful.
BloodyCactus wrote:Id also suggest pulse then you get the whole world of jackd/midictrl and mapping and such.
BloodyCactus wrote:http://members.chello.nl/~g.lammertink/Techniek/Wavetabl/wave.htm
d0pefish wrote:I'm using a USB MIDI interface, so I'm not hitting the GPIO, and the speed issues are there when outputting with internal audio and USB audio (I have a few different kinds of USB audio device).
RJDog wrote:d0pefish wrote:I'm using a USB MIDI interface, so I'm not hitting the GPIO, and the speed issues are there when outputting with internal audio and USB audio (I have a few different kinds of USB audio device).
The USB MIDI interface might be the issue. Unless you are using a really high end one like a Mark of the Unicorn, or good Roland, buffer and timing issues could be the culprit. This is one of the reasons why I developed my own using an Atmega 328.
Kamerat wrote:Have you published information about your homemade MIDI interface somewhere?
gdjacobs wrote:Another option would be integrating an FTDI bridge chip to provide the UART via USB. These have been successfully used for MIDI on Pis in the past.
Super_Relay wrote: it will probably be 10pcbs and i doubt i will need more than 2 of them
BloodyCactus wrote:ospark is expensive once you get over like an inch by an inch. I go seeed studio for my larger boards.
ab0tj wrote:Take a look at the USER header on the HardMPU schematic- This might be a good use case?
BloodyCactus wrote:ospark is expensive once you get over like an inch by an inch. I go seeed studio for my larger boards.
gdjacobs wrote:I recommend using a board with at least a Cortex A7 based CPU. NEON gives a significant boost with Munt and is shown to make real time MT-32 emulation possible.
PhilsComputerLab wrote:I have an Orange Pi PC and FluidSynth would not work well for me. I used Armbian as OS and the MIDI playback was kind of laggy and "off".
PhilsComputerLab wrote:If it's ok with you, I can merge with the existing "Munt on Pi" thread and move it to Sound?
RJDog wrote:PhilsComputerLab wrote:If it's ok with you, I can merge with the existing "Munt on Pi" thread and move it to Sound?
Yeah, I followed that thread pretty closely; definitely good work. My attempts here are to essentially productize that idea into a unique form factor. I don't disagree with merging the two... for sure both belong in Sound.
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