Questions tagged [embedded-systems]
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13
questions
0
votes
1answer
43 views
Sampling rate issue in microcontroller
I am using a 3-axis LIS2D12H accelerometer interfaced with NRF51832 through the SPI interface.
The sensor has a sampling-rate from 1 Hz to ...
0
votes
1answer
86 views
Can I implement a LP filter using DMA?
This questions seems to be a little strange but bear with me.
I have an application that needs a digital filter to be implemented in a microcontroller.
What I want to do
I want to use the DMA to ...
0
votes
1answer
43 views
Confusion regarding a library of Digital Signal Controller
I'll be using a NXP DSC with 56800Ex core and my aim is to implement a Elliptic IIR Filter in it.
The User Reference Manual of the 'General Digital Filters Library' (which is available here) has ...
0
votes
1answer
118 views
Time series forecasting on dsp embedded systems
I have a time series analysis algorithm that uses arima modeling and fits a model to the time series and gets the residual values. It is more of a statistical signal processing algorithm than a ...
1
vote
1answer
78 views
Implementation of IIR Filter in dsPIC 33EP - Q15
I am implementing an IIR controller in dsPIC 33EP (16-bit, fixed-point, two's complement, wrap-around, 40-bit accumulator, 32-bit multiply, 12-bit ADC) and I am using cascaded, Direct Form I second ...
2
votes
1answer
217 views
Implementation of IIR Filter in dsPIC 33EP - Scaling
I have to implement an IIR controller in dsPIC 33EP (16-bit, fixed-point, two's complement, wrap-around, 40-bit accumulator, 32-bit multiply, 12-bit ADC) and I am using cascaded, Direct Form I second ...
2
votes
1answer
140 views
Orthogonal signal generator using integer arithmetic
I have a problem with implementing an orthogonal signal generator (OSG) algorithm on a microcontroller using integer arithmetic. I use this algorithm for a single-phase phase-locked loop (PLL) ...
0
votes
1answer
377 views
Doing audio processing with DFT on a microcontroller
I have written an audio processing application in C++ which runs on a desktop windows computer.
My next step is to implement this on an embedded system using a microcontroller, preferably arm-based.
...
0
votes
1answer
271 views
Long burst of high amplitude noise removal
I have a setup with an embedded DSPIC. This is used to link multiple audio inputs to the outputs and changed between them either when told to, or when one is active. This changing takes place on a ...
1
vote
2answers
934 views
Recommendations for DSP Hardware
I'm trying to figure out what a good DSP unit would be to try and learn how to do some embedded programming on? I would like something relatively inexpensive but that still has a decent amount of "...
0
votes
2answers
276 views
Why do we follow Shannon's Theorem in audio sampling?
My professor told me that in sampling a signal, is not usual to respect the Shannon theorem because the interpolation formula contains sines and fractions which are difficult to calculate with a ...
1
vote
1answer
575 views
Comparing two sound files in embedded-systems (C language)
what would be the most efficient ("cheap" in terms of system resources etc.) way to compare 2 sound files?
Here is the scenario. Sound A comes as an input. There is sound B stored in memory. We need ...
8
votes
1answer
462 views
Which digital modulation scheme would be suitable for transmitting digital data through the output of a PC soundcard
I need to output a data stream at $40\textrm{ kbit/s}$ or faster out of a computer system whose only accessible output peripheral is the audio interface. This interface has reasonable specs, $96\...
