DSP stands for Digital Signal Processing or Digital Signal Processor.

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1answer
29 views

Measuring transfer function using a DSP card [on hold]

I want to measure the transfer function H(jw) of a physical system using a DSP card. One obvious solution is to use stepped-sinusoids: Generate a time-discrete sinus signal, convert to time-continous ...
1
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1answer
51 views

band pass filter on solar cell to detect laser

my target is detecting a laser generated with 1k frequency using a solar cell, i'm using this idea which is using a band pass filter on the solar cell to block the dc sun light and let me detect the ...
2
votes
4answers
94 views

Are FPGAs more intuitive to learn than microprocessors for doing DSP

I want to learn to make DSP hardware I have never done any DSP and only a little bit of programming, but I have been making analog circuits for 15 years. I like the idea of learning FPGAs because it ...
0
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0answers
15 views

DSP IC TM816 overheating

I am using a DSP816 IC(Texas Instruments) on my Processor board used in encoders(DVBC), the problem i am facing is that the DSP IC is heating too much resulting in a Picture loss after sometime. I ...
0
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1answer
98 views

Use LCD 1602A with F28027

I want to connect C2000 Piccolo LAUNCHXL-F28027 and LCD 1602A. And I already found this example: http://embedjournal.com/interfacing-16x2-character-lcd-with-c2000-launchpad/. I downloaded the source ...
3
votes
3answers
93 views

Radar Snr improvement

I have a simple radar module (k-band) that is capable of fm modulation and it provides both I and Q as baseband outputs. I like to extend the measurement range of this module by just signal processing ...
3
votes
1answer
75 views

Understanding the DTFT

So I am taking a signal processing course in EE and my professor is an Engineer who really likes math however his book which we use for the class falls in the dreadful purgatory of math books in my ...
0
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1answer
66 views

Are TI TMS320C6x and TI TMS320C2x compatible?

I never learnt assembly language programming. But, I know C and C++. I need to learn C2000 Piccolo programming. I found no book on C2000, there are only manuals from TI website. But, suddenly, I ...
0
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1answer
31 views

How many ePWM instances are there in a TMS320C28x Piccolo DSP chip?

In this reference manual, it is written that: [Page 11] 1 Introduction ...... Cross coupling or sharing of resources has been avoided; instead, the ePWM is built up from smaller single ...
0
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3answers
82 views

Cannot understand the attenuation in signal from PC to microcontroller(NI myRIO)

I am working on Active Noise Cancellation Project. I came across a problem, where the signal is getting attenuated as the audio bit depth changes from PC data to Microcontroller and I cannot ...
0
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0answers
40 views

How to remove statistical properties and standardize two similar microphones?

I am using two similar microphones for my Active Noise Cancellation project. I need to use the microphone input values in LMS Algorithm,I want to standardize the two microphones, so the iterative ...
4
votes
1answer
88 views

256-point FFT, but only need 5-6 frequencies, is there a better way?

Due to the constraints of my system, I have a 256pt FFT. However, I only care about the energy at 5 or 6 of the 256 bins. 256pt FFT is still faster than 5 or 6 specific DFTs, but it seems wasteful ...
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0answers
28 views

TMS320F28335 Offset Error Correction

I work with TMS320F28335.The 2833x ADC supports offset correction via a 9-bit field in the ADC Offset Trim Register(ADCOFFTRIM).I read the ti 2833x ADC reference guide(page 31),but I don't understand ...
3
votes
2answers
407 views

What is the meaning of my fourier transform results?

I've been experimenting with Fourier transforms, and I'd like to understand some of the results I'm seeing. I've written a simulator which generates a data stream of length 1/120 seconds, sampled at ...
1
vote
3answers
167 views

Discrete signals: Power and Energy after Up/Downsampling

I think I have a very simple question, but I am very confused about it right now. Given is a discrete sequence \$x[n]\$, for simplicity we say its finite and of length \$N\$. Then we know that the ...
0
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0answers
57 views

DSP, random glitches when resampling audio wave

I'm using a DSP for audio processing, I get an audio input via Bluetooth (a2dp) and I output the processed audio through an analog connector to a headset. The audio I receive from the Bluetooth ...
5
votes
1answer
109 views

Jumping from microcontroller to DSPs

I have been using microcontroller like ARM Cortex M4 32bit based microcontrollers. Now I am thinking to move towards DSPs, but I really don't know how things work in Processors and DSPs, I mean in ...
0
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0answers
75 views

CMSIS DSP on Cortex A7/A8?

Is it possible to run the CMSIS DSP library on a Cortex A7 or A8 architecture? I can only find references to M4. (If not, what makes it exclusively compatible with M4?) I see that A7 and A8 have more ...
-2
votes
1answer
77 views

Digital guitar effect / DSP [closed]

I have to design and create a MCU device as a project for my university. I would like to create a real-time digital guitar effect, which should have a decent sound quality. I don't have any real ...
0
votes
3answers
198 views

Transmitting data from MATLAB to FPGA

This is about design of a JPEG compression/decompression scheme on an Altera FPGA. It is possible to have camera or SD card for image input and TV or SD card for image output. However, these ...
3
votes
1answer
92 views

Combining the outputs of multiple SPI devices

I have a project that has an array of digital microphones whose output I would like to perform some fancy signal processing on, using a high-powered ARM micro-processor. I like the idea of using ...
0
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1answer
50 views

Sampling frequency range of an discrete signal

Is it possible to detect each and every frequency above the nyquist frequency? Or this can be also discrete Thank you.
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0answers
50 views

Simple DSP Problem Solve Cascading System

System \$S\$ takes discrete input \$x[n]\$ multiplies by \$e^{-j\omega_0n}\$ and then cascades through a second LTI subsystem with an impulse response \$h[n]\$ to produce output \$y[n]\$ A second ...
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0answers
42 views

Simple Signal Processing Question

I see this input signal given in my DSP textbook. \$ x[n] = \begin{cases} \frac{h^*[-n]}{|h[-n]|}, & h[n] \neq 0 \\ 0, & h[n] = 0 \\ \end{cases} \$ It says the sequence is bounded by ...
0
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0answers
54 views

Measure the number of elements in a box by weight

Well , it might be strange or basic, but is there a way to measure number of elements- such as coins, small balls, inside a box, when the weight per element is known, and the box shape is also known . ...
3
votes
1answer
89 views

Can I implement a FM Radio Rx on the the Spartan 3E kit?

Can I implement a FM Radio Rx on the the Spartan 3E kit? Starting Problems I am facing- How do I interface the Antenna with the Spartan 3E kit? Implementing the A/D converter.
1
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1answer
91 views

Distinguishing between FIR and IIR filters from transform function

I was good at this but unfortunately I have forgot almost everything... So the question is what are the steps to tell if a transform function is for IIR or FIR filter: $$H(z) = ...
2
votes
1answer
42 views

TSP65070 and OMAP 1V8 pull up to 2.7V

I want to use the TPS65070, the power solution for DSP to power the OMAP L138, but i read in the errata sheet of the OMAP L138 OMAP L138 Errata page 25 that the 1V8 power supply can pull up to 2.7V ...
2
votes
2answers
299 views

Is there an audio amplifier chip or circuit that amplifies certain amplitudes in a signal less or more than other amplitudes?

Like for instance, that would amplify on an exponential curve where the lower amplitudes get the maximum amplification and the highest amplitudes would get no amplification? Is there an analog chip ...
1
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3answers
388 views

DSP Cutoff vs Sampling frequency question on low pass filter

Is it unrealistic to have a 125 MHz sampling rate with a cutoff frequency of 5 Hz? I downloaded a few filter programs and used their methods and it seems that even with thousands of taps it still ...
-4
votes
1answer
56 views

analog signal in sample and hold circuit [closed]

if an analogue signal is sampled at a rate of 11.025 kHz and the acquisition time of the sampler is 10 micro sec .how much time is available for quantization and digitization?
0
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0answers
138 views

How do I decide upon the order of SINC filter for sigma delta modulator?

I have simulated a first order sigma delta modulator im Matlab simulink. The clock frequency of the modulator is 20Mhz (oversampling frequency). Now I am trying to convert a sine waveform (50Hz) to ...
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0answers
123 views

USB streaming controller

I am developing an Audio codec using the TI AIC3254 Audio Codec with miniDSP. For the interface, they have suggested a USB streaming controller which they no longer support and other alternatives are ...
3
votes
6answers
688 views

16-bit or 24-bit converters?

I wanna build some DSP effects on, for example STM32F4 processor, with frequency 96 or 192 KHz. Are 16-bit converters (ADC and DAC) enough for that kind of operation? Can I hear a diffrence when ...
0
votes
1answer
46 views

Mapping signal dynamic range

I would like to transform a signal that has fluctuations between 1.8-1.9V (for example) to be in the range of -1V to 1V. Essentially, run it through a linear transformation [ \$y'= (y-a) \cdot b\$ ] ...
1
vote
1answer
211 views

getting started fpga video processing? [closed]

Hi i am a electrical engineering student first year since we study only microcontrollers and processors I have decided to learn more about fpga (I have a little experience with spartan 3e vhdl) . My ...
4
votes
2answers
394 views

Low-end DSP vs High-end MCU

I'm currently working on a Guitar DSP project, based on STM32F407VGT6 but as I progress I come to conclusion that I'm gonna need a bigger unit (with SDRAM). The question that is ringing in my head is ...
0
votes
1answer
336 views

How to interface PWM output from a microcontroller with power MOSFET?

How to interface PWM output from a dsPIC30F6012 microcontroller with power MOSFET TrenchFET like SiE818DF? I want use PWM to control the brightness of the LEDs. Four PWM channels, one PWM per channel. ...
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votes
2answers
66 views

Suggestions for a simple microcontroller [closed]

Please suggest a simple digital solution for an equalizer implementation. I am not looking for any feature heavy DSP based IC, since my application only requires some minor adjustments on the bass and ...
1
vote
2answers
264 views

What is the relation between delay of a digital FIR filter and step response of it?

My question is indicated in the title: What is the relation between delay of a digital FIR filter and step response of it? Is the delay equal to the stablization time of the step response of the FIR? ...
1
vote
1answer
122 views

What is the best practice to measure 3 phase grid voltage using a dsp chip for synchronization?

I want to measure the current grid voltage to synchronize a dc power supply with the grid using an inverter. Now I'm particularly interested in finding noise and harmonic information about the grid ...
0
votes
2answers
210 views

Would oversampling reduce in-band signal noise floor?

I understand that oversampling will reduce quantization noise floor. Would oversampling also reduce the noise floor of the noises in band of interest? *******EDIT 20150320********* The correct ...
1
vote
1answer
42 views

how to calculate Hermitian Toeplitz system of equations on fpga in vhdl

I'm trying to write vhdl code to solve the Hermitian Toeplitz system of equations (solving for the A's). ...
0
votes
1answer
36 views

Plotting phase of frequency response

I have a question on part A) iii Here is what I have so far What I know is to get the overall phase you have to add the phases of the two frequency response H1 and H2, but I don't know how to get ...
0
votes
1answer
185 views

Help understanding 60 Hz low pass filter behavior in oscilloscope

I have been testing this circuit in simulation which is supposed to be a low pass 60Hz filter, as far as i am concerned the simulation works as intended in simulation starts filtering frequencies ...
2
votes
1answer
230 views

Low Pass IIR filter attenuating all frequencies

I am trying to make a Low pass IIR filter in dsPIC(dsPIC33FJ12MC202) using mikroC compiler. I have generated filter coefficients using Filter Design Tool. My filter specifications are as follows: LPF, ...
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2answers
99 views

how to determine the probability the two signals are equivalent

I am new to electronic engineering and DSP. I have this orignal signal matrix [X1,Y1] . . . . [Xn,Yn] and then it goes through series of transformation. It can be rotation/shift_bit/or whatever ...
1
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0answers
60 views

RMS calculation of signal with high crest factor up to 10 MHz

I'm attempting to measure the RMS of an AC signal with a crest factor of up to 10, at frequencies of up to 10 MHz. From my brief research I can see many ICs that work well above 100 MHz (designed for ...
1
vote
1answer
182 views

frequency doubler on fpga

is it in general possible to implement a frequency doubler completely on FPGA? I saw some implementations on google by delaying the input and XORing it with the original. But they also say that this ...
1
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3answers
919 views

Frequency Detection Circuit Design

I want to create a circuit that can detect audio frequencies and flash RGB LEDs different colors depending on the detected frequency. The frequency range will be from 20 Hz to 12 kHz, after looking at ...