Can anyone tell me how to write a verilog code for DWT of an image and download in to fpga.
Actually my project is to write a verilog code to perform discrete wavelet transform of a medical image, can anyone frame the logic or if have the code can you send me, please
I am using xilinx virtex 2 pro..
This one is in VHDL instead of Verilog, but might still provide at least some inspiration.
Generally FPGA's come with software for programming them. Depending on manufacturer those packages are different. But most of FPGA manufacturers(Xilinx, Altera, etc) ship tools to program their chips.
Besides that there are few 3rd party tools:
http://www.synopsys.com/Solutions/EndSolutions/FPGASolution/Pages/default.aspx
http://www.aldec.com/Products/default.aspx
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I have very poor verilog knowledge, but i need to convert Verilog project, containing some .v files and folders wth .v files to one large EDIF file for parcing.
Is there any easy way to do this?
I have found iverilog tool, but not sure how to convert all project with subfolders at once.
Thank you!
EDIF (Electronic Design Interchange Format) is a vendor-neutral format in which to store Electronic netlists and schematics. https://en.wikipedia.org/wiki/EDIF .
Verilog is a Hardware Description Language, which can describe hardware at a higher, behavioural level of abstraction.
So, in general at least, the two are not compatible. So, in general, you will need to convert your Verilog to gate-level in order for it to be suitable for EDIF. The tool that converts Verilog to gate-level is a logic synthesiser and most, if not all, logic synthesisers will be able to output your netlist as an EDIF file.
So,
if your Verilog is not already gate-level, you will need a logic synthesiser. If you're doing an FPGA design, that will be your FPGA tool: Quartus, Vivado etc.
if your Verilog is already gate-level, then there may be other, more basic, tools that convert from one to another; I don't know. But, if your Verilog is already gate-level, a logic synthesiser will also be able to do the conversion.
I've been looking online for solutions on how to generate a simple beep with an DE2 Altera board using VHDL but I can not seem to find anything.
I've seen some things that are talking about Audio Codec but I haven't been able to get a firm grasp of what I would need to do with it.
Thanks a lot!
-Will
The "audio codec" is a separate chip (a Wolfson WM8731 in your case) which can turn information on digital form into analog information to be amplified/played through a standard sound system with amplifier/speaker/etc.
You'll need to find out how to interface to the audio codec chip from the FPGA (google a datasheet for the chip), and then send it the necessary information to generate you beep. Depending on how advanced the audio chip is, this task can vary rather much in complexity. As it's an educational board, you might be able to find people who've already done something similar, and then build on their experience.
If all you need is a simple beep though, you might also be able to create a simple circuit with a piezo-buzzer or similar yourself - that can be controlled without having to use an audio codec...
Can anyone tell me how to write a verilog code for DWT of an image and download in to fpga.
Actually my project is to write a verilog code to perform discrete wavelet transform of a medical image, can anyone frame the logic or if have the code can you send me, please
I am using xilinx virtex 2 pro..
This one is in VHDL instead of Verilog, but might still provide at least some inspiration.
Generally FPGA's come with software for programming them. Depending on manufacturer those packages are different. But most of FPGA manufacturers(Xilinx, Altera, etc) ship tools to program their chips.
Besides that there are few 3rd party tools:
http://www.synopsys.com/Solutions/EndSolutions/FPGASolution/Pages/default.aspx
http://www.aldec.com/Products/default.aspx
I want to make a program that takes recorded speech and transforms it so it sounds like it's coming from a Texas TI-99. Do you have any good ideas and resources for how to go about that?
Most of those old speech synthesizers were build directly in-chip. Perhaps you could find a synthesizer that sounds like the chip, but if you really want the original sound, you would either have to simulate the chip (I don't know if it's a simple matter, perhaps the chip internals aren't published).
I only know because I burnt out a number of the Radio Shack speech synthesizer ICs before I managed to get a SP0256-AL2 working.
If you're more of a do-it yourself type guy, you need to find out which IC actually drove the speech synthesis in a TI-99, and then build the chip up on a bread board. That's what I was trying to do back then, and I managed to get the chip to speak, but lost patience after I fried my third chip due to a mis-wiring issue when I attempted to attach it to my PC's parallel port. I think this was the book I was using back then, but there's no cover art featured so it's hard to know for sure.
If you are familiar with how to use ROM images, there seems to be a gentleman that has managed to refeverse engineer the ROM image out of a SP0256-AL2. Look here for the image and the incredible granted permission to do the work and distribute the results.
You could start with open source that does something similar: Adding Robotic/Vocoder effect to your song using Audacity
I've searched the net but didn't found anything interesting. Maybe I'm doing something wrong.
I'm looking for sound synthesis API written on C, C++ or even Objective-C, which can synthesize different types of waves, effects are optional.
Here's a complete library/toolkit for FM (Frequency Modulation) synthesis:
link1
link2
If you have time to spare... creating simple sound synthesis from scratch is actually a fun endeavor. If you create a small buffer of 256 16 bit samples which represent either a sine. a sawtooth, block or pulse, you can copy these to a live audiobuffer (e.g. a small buffer (say 16kb)) which constantly loops. By staying ahead of the playposition, and constantly filling up the buffer with new values, you can create the soundoutput.
You can use the small buffers to combine these in interesting ways (simplest is just to add them together (additive synthesis)).
The frequency of the tone can be manipulated by using a bigger or smaller sampling step through the small buffers. Amplitude can be manipulated by scaling the samples before putting them into the output buffer.
Great fun experimenting with this!
If you have this step nailed, you can add more sophisticated effects like filters (low pass, high pass, etc) and effects (reverbs, echoes, etc)
R
Have you looked at the synthesis toolkit (STK)? It's in C++ (I don't think ObjC is the right language for audio synthesis, in fact audio units, Apple's own way of doing audio stuff, including generators/filters/effects... is in C++).
STK will run on Mac OS X, and iOS no problem (CoreAudio is supported), but will also run on Linux and Windows (Direct sound and ASIO), using RtAudio. It's really nicely done and lightweight, these guys have spent a lot of time thinking about it and it will definitely give you a big head start. It can handle loads of different audio file formats + midi (and hopefully OSC soon...).
There is also Create and CLAM which is huge, these include GUI components and many other things which you might or might not want. If you're only interested in doing sound synthesis I really recommend STK.
PortAudio is also a great C API that we used last semester in an audio programming course. It provides an audio callback...what more could you need!?
I haven't tried incorporating it with anything in Objective-C yet, but will report back when I do.
Writing audio synthesis algorithms in C/obj-C is quite difficult in my opinion. I would recommend writing your signal processing algorithms using PureData and then use ZenGarden or libpd to embed and interpret the pd patches in your app.
Another C++ library is nsound:
http://nsound.sourceforge.net
One can generate any kind of modulated signal using the Generator class or using the provided Sine class. Each time-step can have it's own instantaneous frequency and phase offset.
You can also experiment with the Python module to prototype your algorithm quickly, then implement in C++. It can produce pretty matplotlib plots from Python and even from C++!
Have you looked at CSound? It's an incredibly flexible audio generation platform, and can handle everything from simple waveform generation to FM synthesis and all kinds of filters. It also provides MIDI support, and you can extend it by writing custom opcodes. There's a full C API and several C++ APIs as well.