Linked Questions

4
votes
3answers
1k views

Sample sine wave [duplicate]

I need to sample a sine wave in order to create a lookup table. I know the Shannon theorem but I still don't understand how to apply it. I want to have 256 discrete samples of the sine wave that will ...
22
votes
8answers
10k views

How do components fail?

How do components fail? General rules with an answer per component type would be valuable. We can work as a community to build up a single question that holds valuable information about how ...
7
votes
3answers
23k views

How to stock variables in FLASH memory

I am working with a STM32 eval-board from STMicro which includes a ARM Cortex-M4 processor. I need a LUT for cosinus and sinus (read-only variables). I need to manage my RAM memory therefore I want to ...
5
votes
7answers
3k views

Design for an analogue oscillator that doesn't drift in frequency?

VCOs (Voltage Controlled Oscillators) in analogue music synthesizers are notorious for drifting with temperature. What design solutions are there for an analogue audio VCO that keeps close (as in ...
9
votes
2answers
3k views

Fixed point trigonometry for embedded aplications

I need to do rotational (and other) transformations in an embedded application, requiring the sin() cos() and tan() functions. I know you can use look-up tables, and that's the only solution I could ...
-2
votes
3answers
2k views

How can i implement Chirp Signal using C? [closed]

I would like to implement Chirp signal using C code Do you have any idea how can I do it? Edit Goal is to send this signal to an DAC Component (µC intern or external peripheral). But I need fast ...
1
vote
2answers
454 views

Sine Oscillator - for audio frequency

I'm looking to create several sine waves on a single circuit. All must be under 20Khz frequency and each must be unique. Mostly it will be 5-10 frequencies needed. As I found - almost all crystal ...
2
votes
2answers
205 views

Is it feasible to synthesise sound with analog circuitry these days?

A friend of mine who is a layman in terms of electronics asked me to teach him how to synthesise audio with some analog circuit and how to build it. For some reason it has to be analog. Probably ...
3
votes
1answer
422 views

Binary Counter and an Oscillator for frequency generation

I'm interested in creating low frequencies using a high-frequency oscillator. For example - using a 12Mhz oscillator to create 1Khz, 2Khz waves. I've been said that using a Binary adder(oops) counter ...
4
votes
1answer
503 views

I'm buying my first PIC, what kit do I need?

So I'm probably going to buy a dsPIC33F to build a synth with. I've used Atmel micros in the past, but this will be my first PIC chip, I wanted to know if there's anything in particular I need or ...
0
votes
1answer
283 views

Variable Frequency Oscilator (MHz Range)

For a small hobby project, I need something that is able to variably and smoothly oscillate between the range of 300MHz-500MHz depending on a potentiometer (or some other sort of variable input). The ...
0
votes
2answers
268 views

Amplification of sinusoidal signal from filter circuit

Intention of the project is to obtain sinusoidal signal generator of frequency range 10Hz to 100Hz and 5v signal from microcontroller i.e arduino uno, using pwm from arduino uno I got the square ...