Re: [fluid-dev] Fluidsynth make strange sounds with ALSA

2017-12-13 Thread Marcus Weseloh
Am 14.12.2017 01:05 schrieb "Ceresa Jean-Jacques" < jean-jacques.cer...@orange.fr>: On this type of hardware (Orange Pi pc or RPi 2,...), the audio (on jack 3.5) is a PWM signal (very low quality signal and very noisy) and the audio driver doesn't work very well for low latency. That is true for

Re: [fluid-dev] Fluidsynth make strange sounds with ALSA

2017-12-13 Thread Ceresa Jean-Jacques
Hello, On this type of hardware (Orange Pi pc or RPi 2,...), the audio (on jack 3.5) is a PWM signal (very low quality signal and very noisy) and the audio driver doesn't work very well for low latency. For example , with –o audio.period=1 audio.period-size=1024 , we obtain a distorted sound w

Re: [fluid-dev] Fluidsynth make strange sounds with ALSA

2017-12-13 Thread Element Green
Hello, I suspect the system is running out of CPU resources. You can confirm that by running top or some other utility to show the CPU usage and correlate it with when the problem occurs. Also, does the Orange Pi have a floating point unit? If not, that will greatly increase the CPU usage, due

[fluid-dev] Fluidsynth make strange sounds with ALSA

2017-12-13 Thread Даниль Нигаматзянов
Hello! Sorry if my English is bad! I have some midi device (Arduino homemade drum set), and I use FluidSynth. When I tested it on my desktop computer, it works well, but I have a little delay. I think, it because I use PulseAudio. Now, I want to use FluidSynth on Orange Pi mini computer. I don'