## Keyboard Synthesizer

Started by 8 months ago7 replieslatest reply 7 months ago218 views
Yep, turn your computer keyboard into a music keyboard.  Almost four full octaves.https://forum.gambas.one/viewtopic.php?t=1651This is a project that implements...

## Learning Data Transmission for HF Channel

Started by 8 months ago2 replieslatest reply 8 months ago155 views
I am trying to learn data transmission through HF Channel for various multi path and fading conditions.I will be designing and coding for simulation.I am planning...

## An Online Mathematics Reference Book

Started by 10 months ago17 replieslatest reply 8 months ago568 views
Some of the "ol' timers" here may remember the valuable and popular book titled "CRC Standard Mathematical Tables" published by the Chemical Rubber Co., in Cleveland...

## meaning of M(QN) notation

Started by 8 months ago2 replieslatest reply 8 months ago184 views
Hi all-Does anyone know what M(QN) notation means ? For example 15(Q16) ?I'm familiar with QN, QN.M, but not with a leading number followed by parens. I suspect...

## arm_fir_decimate cycles

Started by 9 months ago9 replieslatest reply 9 months ago248 views
Hi All,I need to convert a (fixed point) stereo 16bit/32kHz stream into stereo 16bit/16kHz (on a Cortex M4). For this I have successfully used the CMSIS-DSP function arm_fir_decimate_q15()....

## IFFT of Non causal signal?

Started by 9 months ago3 replieslatest reply 9 months ago199 views
Hi,I have a frequency domain data (that is non-causal). How can I calculate the IFFT in MATLAB so that I can visualize the impulse response behavior of t<0.Thanks...

## How can I estimate the 2 parameters of this signal?

Started by 9 months ago18 replieslatest reply 9 months ago196 views
I have a digital signal of fixed length (e.g. 100 samples). Somewhere within this signal is a contiguous region characterized by "low variance". The remainder of...

## Rice channel + AWGN with lower BER than AWGN alone ??

Started by 3 years ago7 replieslatest reply 9 months ago281 views
Hello!I am playing with the Matlab simulation of an OFDM-based modem I have created, and I am facing a weird problem: I have my frames pass through the "usual encoding/mapping/modulation/IFFT",...

## FFT-Based Equation Error Method - JOS

Started by 1 year ago4 replieslatest reply 9 months ago245 views
Hi,  I'm currently trying to implement the FFT-based equation method for filter design outlined by JOS, details of which can be found here. Specifically, I'm...

## Help with PDM filter, please and thanks

Started by 9 months ago14 replieslatest reply 9 months ago311 views
It's been some time since I've had anything to do with DSP. With that said, I have a project requiring this skill set here and need help. I kept returning to this...

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