houtson
Senior Member

Hi, i think it's operating as intended, certainly the way I thought it operated i.e. once you have set a stage that is it set until you change it and the stage is independent of others. I've used one stage to say...

thanks - void arm_q15_to_float (const q15_t * pSrc, float32_t * pDst, uint32_t blockSize )

Thanks I'll try that Is there and arm_ function to convert a block of int16_t to float? I should have said above I'm using a teensy 4, cheers Paul

The tone attenuation is on the feedback leg of an old reverb effect that I don't own so difficult to isolate. I have the a schematic of it so believe it is as spec'd above, cheers Paul.

Quick bit of feedback to say I got that working - thanks for the pointers @Blackaddr and @WMXZ. I'm a complete noob at filter design so I'll capture a few notes here for anyone else coming behind me. I used the...

Maxim do a range of digipots that you can use for this. Also Microchip MCP42050 is popular. Discussion on subject in another forum might be of interest.......

Sounds fantastic, well done, I bet it's been a labour of love and a whole lot of effort. Industrial design looks great also with the case and the buttons (is that an injection moulded case?), I didn't realise that was...

Thanks, came across this http://users.sussex.ac.uk/~tafj0/DSP_IIR.html which looks handy Cheers Paul

Hi, thanks for the pointers The issue with the library one is the noted issue with low corner freq (<400Hz). I'll have a look at the CMSIS-DSP, I'm assuming I'd need to wrap that in a new object and convert the...

sounds good, let us known how you get on , cheers Paul

I'd recommend trying a bigger step size. 0.0001 is 10,000 steps and well beyond what you will be able to accurately measure on a pot (and I think what you will be able to hear). Midi CC moves from 0 to max in 127...

Hi, You can change AUDIO_BLOCK_SAMPLES (which sets the block size (default is 128 samples, it is set in AudioStream.h). I generally use 16 which updates every 0.3ms. I still think you are trying to update it...

Hi, your code is updating the object every cycle of the loop - on a teensy 4 this will be very often, if you update it less often does the problem go away? cheers Paul

Hi Jeremiah, I'll give a few basic answers and maybe one of the experts can fill in the details. This code uses a wavetable (AudioWaveformSine). Is this absolutely necessary to achieve acceptable performance on...

Hi, They are samples of (in this case) different acoustic guitars. you'll find more details at the adventurekid website. cheers, Paul

hi h4yn0nnym0u5e, This old thread talks about dynamic connections, might be useful ? cheers, Paul

Hi, I didn't review in detail so may not have understood the problem but it looks like you are using pins reserved for the audio board for other input A number of pins are not shareable for other inputs - check...

hi, looks like you are setting the volume every cycle of loop (rather than every 50ms) - that must be a lot of times a second, that might be a the problem? try changing that, press the button on the teensy to enter...