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Type: Posts; User: vincentiuș

1. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Experimenting.. I did change the + sign from the...

Experimenting.. I did change the + sign from the library with a -

*bp++ = signed_saturate_rshift(val1 + tone_offset, 16, 0);

and the thing is happening but i need to keep the half wave up for...
2. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

I did played with the code and it's nice to...

I did played with the code and it's nice to experiment by giving values from the encoder to the mixer gain.
But i think more simple is to invert the offset poles in sort to speak, maybe Halfwave...
3. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Ok, let's see it bipolar, presuming -5V 0 +5V...

Ok, let's see it bipolar, presuming -5V 0 +5V peak to peak for the sinewave then.

Maybe half rectifier is the right term here.. I was think for an inverted offset function in my mind :))

i...
4. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Yes, in principle half rectifier.. but this will...

Yes, in principle half rectifier.. but this will work as the offset function, controlled or small amounts?
5. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Sure! Here is it, the output it's made for the...

Sure!

Here is it, the output it's made for the internal DAC

#include <Audio.h>
#include <Wire.h>
#include <Encoder.h>

// GUItool: begin automatically generated code
6. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Thanks Paul, of course the code is from the...

Thanks Paul, of course the code is from the library it self and it's good for a lot of purposes, something was described here about offset, this is why i was thinking it's a good place to start.
I...
7. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

this is the normal library offset 1.00 on a...

this is the normal library offset 1.00 on a sinewave with PT8211 Dac through an opamp bipolar 10 VPP

21998

and i am trying to switch the offset wave for the same 1.00 value, to be:
21999
8. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

anyone? :D
9. Thread: Amplitude Modulation with offset

by vincentiuș
Replies
21
Views
747

Hey, i was playing with offset and i wonder if...

Hey, i was playing with offset and i wonder if it's possible to change the poles other way around, when going positive, the positive poles to remain an the negative to fade to dc and vice-versa, i...
10. Thread: Waveform.begin no longer resets the wave?

by vincentiuș
Replies
8
Views
1,404

working for waveform unmodulated, but i was...

working for waveform unmodulated, but i was speaking about waveformMod1 for which fm modulation is available
11. Thread: Waveform.begin no longer resets the wave?

by vincentiuș
Replies
8
Views
1,404

Hey, is this available for waveformMod1? i did...

Hey, is this available for waveformMod1? i did tryed

AudioNoInterrupts();
waveformMod1.phaseModulation(0);
AudioInterrupts();
with an external trigger and it's not starting the wave properly,...
12. Thread: Rotary Encoder and counter variable - Encoder.h library

by vincentiuș
Replies
5
Views
1,301

Anyone, something?

Anyone, something?
13. Thread: Rotary Encoder and counter variable - Encoder.h library

by vincentiuș
Replies
5
Views
1,301

Hello guys, I am playing with this code with an...

Hello guys,
I am playing with this code with an single encoder PEC11R-4220F-S0024 which is changing two diferent parameters at one and second switch and i was wondering how can i make it to keep...
14. Thread: excessive ringing on WAVEFORM waves

by vincentiuș
Replies
13
Views
3,251

I didn't fully understand it and how to apply it,...

I didn't fully understand it and how to apply it, but anyway I did it from audiotool for 480 hz, and yes it's going to filter the harmonics. The problem is if i increase the frequency above 5000hz...
15. Thread: excessive ringing on WAVEFORM waves

by vincentiuș
Replies
13
Views
3,251

Hey Paul I did it, i don't think it's a probe...

Hey Paul I did it, i don't think it's a probe problem, i did check with a analog one and is the same.
Here are the two signal
12930
16. Thread: excessive ringing on WAVEFORM waves

by vincentiuș
Replies
13
Views
3,251

Hey guys, I am having the same issue here with...

Hey guys, I am having the same issue here with SGTL5000, i ve tryed all sorts of ways from different topics, long wire, resistor, etc. I don't have the 600ferite as shown in the audio adapter but...
17. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

Here is the stretch with digital encoder and the...

Here is the stretch with digital encoder and the rearranged connections stretch.

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
#include...
18. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

@Theremingenieur Thanks, i've tryed with digital...

@Theremingenieur Thanks, i've tryed with digital rotary encoders and of course, the value is stable in the serial print but no on the dac outputs, still it's a variation. Anyway.. for this can we...
19. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

I've tryed above 1.0 and is the same thing. The...

I've tryed above 1.0 and is the same thing. The code is generating values under 1.00, for each wave. i don't have any problems with cliping and distortion, the issue was with stability of the wave...
20. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

Any news here?

Any news here?
21. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

@jdev & @bmillier Is not about any distortion,...

@jdev & @bmillier Is not about any distortion, it's about a instability of the wave shapes freq, see the link on the top :)

@PaulStoffregen Hey, so here is the version with fixed numbers, for sine...
22. Thread: Audio Tool PT8211 Oscillator stability

by vincentiuș
Replies
14
Views
3,527

Audio Tool PT8211 Oscillator stability

Hey, I am trying to make a project and more precisely an VCO with CV for freq and CV for waveshape for now.
The design is made in the audio tool and the waveshape are fading between them via knob...
23. Thread: Dual channel 16bit dac PT8211

by vincentiuș
Replies
140
Views
40,360

@ Frank. The TDA is Working! Thanks!

@ Frank. The TDA is Working! Thanks!
24. Thread: Dual channel 16bit dac PT8211

by vincentiuș
Replies
140
Views
40,360

Hey Frank! Thanks for heads up! I did replaced as...

Hey Frank! Thanks for heads up! I did replaced as you instructed me, now i get some squares generated although it's a sine waveform code.
Where can i disable the oversampling?
25. Thread: DAC on Audio System Design Tool not working

by vincentiuș
Replies
12
Views
3,257

Here is the sketch that i made and I am trying to...

Here is the sketch that i made and I am trying to output at the same time both signals, onboard Dac and MCP49xx dac. The problem is that i don't find which name of the tabVal from the library should...
26. Thread: Dual channel 16bit dac PT8211

by vincentiuș
Replies
140
Views
40,360

Yes, you are right, but this is what i have now...

Yes, you are right, but this is what i have now until i receive the PT chips :)
27. Thread: Dual channel 16bit dac PT8211

by vincentiuș
Replies
140
Views
40,360

Hey guys. I am trying to output now via TDA1543,...

Hey guys. I am trying to output now via TDA1543, it's a 16bit DAC, it's very similar to pt8211 but not the same. Maybe you can guide me how to do it and what i have to modify in the library.

This...
28. Thread: DAC on Audio System Design Tool not working

by vincentiuș
Replies
12
Views
3,257

to be clear, I am using Tennsy 3.2 whitout ...

to be clear, I am using Tennsy 3.2 whitout shield, the output of the DAC it will be amplified by a TL chip + more, leaving that aside. The issue is with the output, because i don't find the...
29. Thread: DAC on Audio System Design Tool not working

by vincentiuș
Replies
12
Views
3,257

Hello Paul! I am new on tennsy platform and i am...

Hello Paul! I am new on tennsy platform and i am interested in particular about audio development. Can you tell me if i can use audio system tool without Audio shield needed. For instance i want to...
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