Hi everyones,
At last, I did it .I added flange and phaser effects to my esp32 board but
I cant delay,yet.
Also I added hardware midi knobs and assigned it to esp32 hardware
For a simple start I wrote very simple delay/reverb effects without any
feedback on faust،something like this in dsp format:
Import("sdtfaust.lib");
echo=_,6000:@;
process=_,echo:+;
Suppose sampling rate is 48000Hz
When I run it ,It worked , but for 125ms of reverb when I used this:
.....
echo=_,48000:@;
....
Delay time equal to 1 second and it didn't work ,so I realized it is %100
related to memory problem.
I guessed when we use effect proccessore for audio there must be 2 buffers
,one for input and the other for output so I had to search my compiled
esp32 (dsp to .cpp) file for these buffers.
I found these:
1. int32_t sample_data_in[AUDIO_MAX_CHAN*fBufferSize];
2. int32_t sample_audio_out[AUDIO_MAX_CHAN*fBufferSize];
Then I thought to end of the problem line and added EXT_RAM_ATTR to end of
each above lines and... It didn't work.☹️
So I am a bit of confused...
PS. Because I am using the Arduino IDE and windows 10 ,I enabled psram in
tools menu and write a tiny program and log into the cpu and checked the
amount of ext psram and it was ok(4MB) and arduino ide could see it.
Any help appriciated.
Best Regards
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