Questions tagged [hardware]

Questions about hardware required used for signal processing.

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4 votes
1 answer
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STM32F7 Discovery board vs dsp kit tms320c6713 vs Rasberry Pi?

We want to design dsp kit Labs for our undergraduate students for following tasks/topics. 1)Sampling and Quantization of real time Audio Signals on DSP Kit ; analyze the effect of Aliasing and ...
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10 votes
6 answers
4k views

How can I work on DSP using C/C++?

I have been working on MATLAB for signal processing for a while. Many companies from DSP for a communication background has asked me whether I know C/C++ very well. I am confused as to why the ...
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0 votes
0 answers
12 views

UBX could not transmit signal

I am new to x310. I want to transmit a signal with its UBX daughter board and using gnu USRP sink block . but it seems no signal transmitted. Is this a software problem or hardware?
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2 votes
2 answers
129 views

The transmission distance of a signal

I am no professional in this area so please forgive me if this question is too immature. And thanks in advance for any help and information. I want to know how to calculate the transmission distance ...
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0 votes
0 answers
27 views

What is the name of this plug? (with images)

I have speakers that connect with the plugs shown in the images below to a hifi system, but I would like to connect them instead directly to a computer. Before I can find some kind of adapter to make ...
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0 votes
0 answers
46 views

How to find lattice coefficients when k2=1?

$H(z)=1+2z^{-1}+z^{-2}$ We know the formula $a_{m-1}\;(k)=\frac{a_m\;(k)-k_m\;a_m\;(m-k)}{1-k_m\;^2}$ Here $k_2=1$ That makes $a_{m-1}\;(k)=infinity$ How to find lattice coefficients of all pole IIR ...
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  • 31
0 votes
1 answer
74 views

Lattice structure-Lattice coefficients-Sign positive or negative?

This is the question $$ H(z) = \frac{1}{2 + 1.4z^{-1} + 1.8z^{-2}} $$ My professor has told that we don't need to take those 2 values as negative and instead we can take them as positives(with the ...
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3 votes
1 answer
124 views

The power of signal processing when faced with hardware constraints

I am currently studying interferometry, but I have only just begun studying signal processing. I want to better understand the effect signal processing can have in maximising signal detection from ...
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0 votes
1 answer
40 views

Why I get another spectrum when upconvert an o-qpsk baseband signal with a bladerf compared to a hackrf device?

I have just start working with bladerf instead of former used hackrf hardware and I need to solve a problem. Currently I use the following bladerf hardware, libraries and firmware: bladerf (2.0 micro ...
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0 votes
1 answer
456 views

general purpose microprocessor vs DSP(digital signal processor)?

I know that DSPs are specialized processors but i want to know what will happen if DSPs are replaced by general purpose processor in their applications? I know one application,mobile phone,will that ...
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  • 861
1 vote
1 answer
182 views

simulator for dsp kit tms320c6713?without using actual hardware kit tms320c6713?

As you know, most universities across the globe are closed due to pandemic and people are unable to acess research facilites ,so in such a scenario one wants to improve his dsp hardware programming ...
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  • 861
2 votes
1 answer
91 views

Selecting a Digital Signal Processor for a Specific Image Sensor

I am working on developing a camera and I am trying to select hardware for the camera. I believe that I may need a digital signal processor to compress image data before it is transmitted to a ...
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  • 23
1 vote
1 answer
106 views

dB SPL readings differ from external sound level meter?

I'm trying to write a program that takes values from a MEMS microphone and calculates the dB of the incoming audio data. The microphone i'm using is this: https://www.mouser.es/datasheet/2/218/...
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0 votes
0 answers
267 views

gnuradio extremely sluggish with QT (but seems OK with WX)

I am evaluating gnuradio with Ettus USRP X310 and 2xUBX-160 daugterboards, connected via GBit ethernet to a new Lenovo laptop running Win10 and gnuradio 3.7.13.5. I am testing it with the most basic ...
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  • 445
1 vote
0 answers
215 views

What is the minimum and maximum cutoff frequencies for the antialiasing filter for this ADC?

https://www.analog.com/en/products/ad9675.html https://www.analog.com/media/en/technical-documentation/data-sheets/AD9675.pdf It says in the data sheet that the Anti-Aliasing Filter has : "...
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0 votes
1 answer
104 views

Neural Network learning project based on 8 wave signals over 1 second at 1 sample every 10 ms ( hence 100Hz )

I'm currentely trying to train a neural network that can decide wether a pattern produced by the movement of a hand near capacitive sensors is as expected, or random. I have an MPR121 microchip linked ...
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0 votes
1 answer
41 views

Data measuring interface

I have an hardware related question. I want to create a measurement set-up so that I can record data for DSP analysis. When searching around I see I have a few different options. The ones I have ...
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  • 335
1 vote
1 answer
254 views

Suggestion for a DSP board to implement a Kalman filter in real-time at a rate of around 4MHz or higher

I have been attempting to implement a Kalman filter on an FPGA in VHDL and have got to the point that it works. However I have the issue that each variable requires 64 bits to be represented to get ...
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0 votes
1 answer
91 views

Spectrum Sensing HW

I am interested to use an existing hardware to perform a spectrum sensing/monitoring in the frequency range of 2.2–2.6 GHz. Taking into account that the 802.11ac channels are in the range of 2.4–2.5 ...
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  • 93
0 votes
1 answer
440 views

Resampling scattered data with MATLAB's $\tt interp$ and $\tt resample$

I am recording acceleration data with an MPU6050 connected to a Arduino1 and stored on a SD. Here you can find the code. I need to calculate the FFT of an acceleration signal that was not sampled ...
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1 vote
1 answer
2k views

How to calculate FFT of a non-uniformly sampled signal?

Is it possible to calculate the FFT of a signal that was not sampled uniformly? I have an MPU6050 connected to an Arduino uno. I write the samples at the default frequency, approximately 20 ...
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6 votes
2 answers
350 views

Audio DSP HW Recommendation

I'm very new to DSP hardware, so I am taking it upon myself to learn it with regard to Audio and Acoustic Signal Processing. I've learned quite a bit of theory in a graduate DSP course, but absolutely ...
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  • 61
2 votes
1 answer
334 views

Architecture for high sample-rate FIR/IIR filter on FPGA or ASIC?

Assume we have a hardware (FPGA or ASIC) which can operate at a fixed processing frequency of $100\textrm{ MHz}$. Assume we have an input data stream of $1\textrm{GSPS}$ (which has been sampled using ...
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0 votes
1 answer
83 views

Hardware advice for machine vision project

I am working in facial feature detection in video images. I was hoping to get some general advice about camera/lens technologies to determine if I can upgrade my camera/lens. Basically, the problem ...
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1 vote
1 answer
144 views

Multichannel input/output evaluation board

I'm working on a project at school and the first step is to choose a dsp/evaluation board but I'm having trouble. The project is to create a system that can be used for a variety of audio applications ...
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  • 11
2 votes
0 answers
373 views

Is Karplus-Strong synthesis a reliable way to test pitch detection algorithms?

I'm using Arduino DUE (Cortex-M3 based board). I want to make a guitar sound using DAC (digital to analog converter). For instance, the note A2's fundamental frequency is 110 Hz (using A4 440 Hz as ...
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2 votes
2 answers
920 views

DSP Hardware for Detecting an Audio "Click"

I am working on isolating a specific audio click in a factory type setting. After my initial analysis I determined that a 2-pole High Pass Filter set between 500 and 800Hz would work best for me. The ...
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  • 21
7 votes
1 answer
103 views

Does the Quality of the Pictures Taken by a USB 3.0 Camera Depend on Cable Length?

I've got a JAI GO-5000-USB camera and have tried several cable lengths, ranging from 40cm to 5m. So far, I haven't observed many differences in the quality of the pictures I've taken. Since I want ...
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  • 173
0 votes
1 answer
35 views

How to accurately count the time period (hardware)?

Input : Square wave which sweeps over time domain. (about 1 MHz) Output: The time period of high/low value. Like the timer does, I would like to know the actual time (in sec) when the input goes high ...
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2 votes
1 answer
341 views

Ear Test using MATLAB

I'm trying to test my ear frequency range by using MATLAB. The thing I could not understand is that I can hear the frequencies above 20 kHz. My sampling frequency is enough to satisfy the Nyquist ...
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2 votes
3 answers
177 views

Hardware Transfer Function Estimation

Suppose you have the ability to inject any arbitrary waveform into a piece of analog rf hardware and collect and digitize the output for analysis. If you wanted to characterize/estimate the transfer ...
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4 votes
2 answers
521 views

3CCD or monochrome with Bayer filter?

I was wondering if any one with experience with both sensors can give some insight on this. I've heard there can be problems with alignment of the different signals using a 3CCD. However, when using ...
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  • 1,361
3 votes
2 answers
6k views

DSP Benchmarks for ARM Cortex-M4 processor

Does anyone know where there are any benchhmark timings for the DSP functionality in the ARM CMSIS V2 running on a Cortex-M4 processor. I am trying to work out whether this processor is powerful ...
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  • 161
15 votes
3 answers
2k views

How to decide what platform is best to implement real-time audio processing on?

When developing products I do all of my algorithm design in Matlab. They are usually pretty basic, an IIR or FIR filter or two, a couple FFTs, etc. When it comes time to move it to an embedded ...
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