thedreiskre
Active member
I have recently purchased 2 psram chips and soldered them to my teensy 4.1. The memory test worked fine, however when I tried to use them in my program for audio - they didn't work.
I was using them to store wavetables which I was playing back with the a modified version of the waveform object. https://github.com/LawrenceBradshaw/Audio
There was no sound at all produced when using EXTMEM int16_t in defining the arrays, however when I went back to using const int16_t, or just int16_t it worked smoothly. Are there modifications that I
need to make to my waveform object to make EXTMEM work? or is the psram simply not fast enough for polyphonic playback. Any help would be much appreciated.
I was using them to store wavetables which I was playing back with the a modified version of the waveform object. https://github.com/LawrenceBradshaw/Audio
There was no sound at all produced when using EXTMEM int16_t in defining the arrays, however when I went back to using const int16_t, or just int16_t it worked smoothly. Are there modifications that I
need to make to my waveform object to make EXTMEM work? or is the psram simply not fast enough for polyphonic playback. Any help would be much appreciated.