modulation | Modulation - explicit dependency management for Ruby

Any items in a list where the name of an item (in the brackets) has <=2 character, the description is put on the same line as the name. I'm looking for a way to make it so all of the descriptions are all indented on the next line, thanks.

Trying to read various payment cards using PN532 NFC RFID Module. libnfc6 sucessfully polls most of the nfc cards and even mobile payment method is detected, but none of my Revolut cards are detected by nfc-poll app.

libnfc was compiled locally from libnfc-1.8.0 git tag.

My current polling setup:

I am working on a simple Tkinter GUI program that displays the different rows between 2 CSV files. I want the header included in "diff.csv"

I want to produce a Sine wave whose amplitude and frequency can be varied dynamically. I can't use a pre-existing audio file for this. The documentation for the package media says:

In some cases the container format might simply be an elementary stream containing the encoded data.

I intend to play audio using a stream of values, which represent amplitude (pulse code modulation). This is a pseudo-code of what I am aiming for:

I'm having a hell of a time trying to modify an instance variable. In the code that follows, shuffle_phase() is supposed to modify the self.env variable. (EDIT: Here's an example use, full code follows below).

I have this data frame and table:

I am developing a code for transmission and reception of a txt file using fec correction and qam modulation. The main problem is in transmission it only send one character or nothing just for a second and then get freeze. It's the first time that i used GNU radio and i don't know what caused this problem can you check the code in the images below and tell me what it could be and how to solve this. If i am doing something wrong please tell me.

Sorry, I don't have the range to post images so instead that I posted links.

This is for TX Txcode1 Txcode2

This is for RX RXcode1 RXcode2

I'm brand new to DSP and I'm experimenting with GFSK modulation to eventually output the signal using ultrasound. Could someone please explain why this set up doesn't work.

I'm receiving a serialized protocol buffer on the ZMQ Pull source and I'm expecting that if I just modulate then demodulate the signal I will get the same protobuf sent, back in the process that sent it (ZMQ push source sending it back). But that ends up not being the case and the byte pattern received after demodulating is off. Could someone explain why my set up doesn't work, Thank you again.

Flowgraph of GFSK mod/demod

I'm trying to render text using SDL. Obviously SDL does not support rendering text by itself, so I went with this approach:

• load font file
• raster glyphs in the font to a bitmap
• pack all bitmaps in a large texture, forming a spritesheet of glyphs
• render text as a sequence of glyph-sprites: copy rectangles from the texture to the target

First steps are handled using FreeType library. It can generate bitmaps for many kinds of fonts and provide a lot of extra info about the glyphs. FreeType-generated bitmaps are (by default) alpha channel only. For every glyph I basically get a 2D array of A values in range 0 - 255. For simplicity reasons the MCVE below needs only SDL, I already embedded FreeType-generated bitmap in the source code.

Now, the question is: how should I manage the texture that consists of such bitmaps?

• What blending mode should I use?
• What modulation should I use?
• What should the texture be filled with? FreeType provides alpha channel only, SDL generally wants a texture of RGBA pixels. What values should I use for RGB?
• How do I draw text in specific color? I don't want to make a separate texture for each color.
• FreeType documentation says: For optimal rendering on a screen the bitmap should be used as an alpha channel in linear blending with gamma correction. SDL blending mode documentation doesn't list anything named linear blending so I used a custom one but I'm not sure if I got it right.
• I'm not sure if I got some of SDL calls right as some of them are poorly documented (I already know that locking with empty rectangles crashes on Direct3D), especially how to copy data using SDL_LockTexture.