Questions tagged [hardware-implementation]
The hardware-implementation tag has no usage guidance.
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0answers
16 views
Simple Impulse Response DSP Hardware
I developed some complex chains of filters and crossovers. After that I have created IRs from the entire chains.
Applying these IRs in software works perfectly.
Now I wonder what is the easiest (and ...
-1
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1answer
58 views
edge detection of 1-D signals
Would you please introduce me to some methods (or references) to do edge detection on some pulses (rectangular pulses embedded in noise). At first I apply some filters to smooth the signals, then I ...
0
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2answers
210 views
Implementing an analog approximation of an FIR filter given its impulse response
Problem:
I have the impulse response of a matched filter(therefore its phase and magnitude response. See figure below) of a filter, and I need to implement its response using only off-the-shelf ...
1
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1answer
172 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 ...
1
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1answer
375 views
Sequence Length for a Linear Feedback Shift Register
What is the total length for the sequence for a linear feedback shift register generated with a maximum length sequence, before repeating?
1
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1answer
207 views
Can't make sense from VHDL butterworth filter implementation
I am trying to understand the VHDL implementation of the 3rd order Butterworth filter published on opencores. Supposedly the filter implementation gets away with only division and multiplications by 2 ...
6
votes
2answers
284 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 ...
0
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2answers
277 views
Hardware implementation of Gaussian noise generator
I am implementing a GNG using Verilog. The implementation is based on the IEEE paper "Hardware Architecture of a Gaussian Noise Generator Based on the Inversion Method". In this, i could not ...
0
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1answer
214 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 ...
3
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1answer
247 views
Can we determine if a filter is butterworth or chebyshev from its physical topology?
Can all analog filters be classified as Bessel, Elliptic, Butterworth or Chebyshev?
Given a physical ladder topology of several stages of {L, C or LC} in {series or parallel}, is it possible to ...
0
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0answers
57 views
Estimating the power consumption of an arbitrary, real-time DSP algorithm
Consider a digital signal processing algorithm that operates over a block of $L$ [samples], with a real-time constraint $\tau$ [s] (i.e. its throughput must be $L/\tau$ [samples/s]).
The theoretical ...
0
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1answer
128 views
how much of DSP (digital signal processing) is related VLSI?
Although,this question may not be very much related to the topic of discussion, but i just wanted to know how much of DSP (digital signal processing) is used in VLSI. Like in the industry or for the ...
2
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2answers
523 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 ...
1
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2answers
114 views
Embedded Image Processing System that sends photos to Smartphone via Bluetooth
I would like to create an embedded system that takes a Full HD photo by pressing a button,processes and compresses it(for ex. to jpg) and then sends it via Bluetooth to the smartphone - where it's ...
2
votes
2answers
493 views
Are SOS structures better for linear phase FIR filters?
I've seen many discussions suggesting that SOS's are often/usually the preferred structure for fixed point hardware filter implementations, since they preserve conjugate pairs, etc., but I've never ...
0
votes
1answer
33 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 ...
0
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2answers
2k views
IIR filter implementation in Direct Form 2
I have implemented Direct Form 2 IIR filter. The input is the Kronecker delta function. I have written code for the response of the filter for Kronecker delta input. The code is:
...
0
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2answers
45 views
Acoustic record and store devices
I am working on a project involving analysis of bird sounds and I want to record these sounds in slightly remote locations. It is enough if the device can only record and store them (maybe in an SD ...
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2answers
154 views
What is the best OS for real time signal processing? [closed]
I'm implementing a BCI-Wheel Chair Control System where signal are extracted from the arm into MATLAB -> feature extraction -> classification -> Control signal
The delay should be minimal between ...
4
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4answers
278 views
How many bits of precision are often used in fixed point DSP?
I understand FIR & IIR digital filters are often implemented in fixed point DSP hardware. I have also seen them implemented in software. Do companies make special purpose digital filtering chips ...
0
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1answer
279 views
Effect of bandwidth reduction in bit growth
I just want to ask, whenever you reduce a bandwidth of signal by filtering, I wonder why do you need to improve the number of bits used to represent that signal.
The number of bit growth is
$$\frac{1}...
-1
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1answer
67 views
benefit of dividing the signal processing job into two computers? [closed]
I am not sure if this is the right place to ask this question. I am asking it anyway..
In Aircraft Airbus 320, control inputs from the pilot's sidestick are processed by two computers for different ...
8
votes
2answers
910 views
What are some face detection (not recognition) algorithms suitable for limited (embedded) processors?
I am looking at a hardware based platform for surveillance class of applications. I want to identify faces of people as they appear in the scene.
I don't intend to really apply face recognition (...
6
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2answers
2k views
Low MIPS Video Encoder
I am looking for a low MIPS, low compression video encoder. This is for a 10fps, VGA type quality compression. What are my options? I need to be able to do this compression using a 150MHz ARM M4 CPU ...
4
votes
1answer
176 views
Apply decay envelope to waveform without multiplication
I'm trying to apply a decay envelope to a sinusoidal waveform using Verilog. Hardware constraints prevent use of multiplication to simply multiply by the envelope. The sine values and envelope values, ...
15
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2answers
2k views
Are there any standard implementation forms for tunable Butterworth filters?
One of the standard ways to implement a Butterworth filter is with a cascade of second-order sections, each corresponding to a pair of complex-conjugate poles. For a fourth-order filter, for example, ...
