https://github.com/zeloe/rtconvolver
A realtime convolution VST3
https://github.com/zeloe/rtconvolver
c convolution cplusplus cuda juce
Last synced: about 1 year ago
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A realtime convolution VST3
- Host: GitHub
- URL: https://github.com/zeloe/rtconvolver
- Owner: zeloe
- License: gpl-3.0
- Created: 2024-11-05T10:50:30.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2025-01-26T00:43:31.000Z (over 1 year ago)
- Last Synced: 2025-04-22T20:12:25.014Z (about 1 year ago)
- Topics: c, convolution, cplusplus, cuda, juce
- Language: Cuda
- Homepage:
- Size: 118 KB
- Stars: 4
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# RTConvolver
A realtime GPU powered convolution VST3.
##
### Setup in DAW
In a DAW of your choice you need to setup a track with 4 channels. \
You should then send on channel 1 & 2 a stereo signal and on channel 3 & 4 a different stereo signal.
### How to build
You will need a working CUDA compiler and cmake.
```shell
git clone https://github.com/zeloe/RTConvolver.git
cmake . -B build -G "Visual Studio 17 2022"
```
### Processing
At each call of process block 4 blocks of audio get into plugin. Then each of these audio blocks is on CPU. These audio blocks are then moved on GPU.
On GPU time a domain delay line is implemented for each block 1 and 2. By following this logic.
```mermaid
graph LR
First;
```
```mermaid
graph LR
Second-->First;
```
Another different time delay line is implemented on 3 and 4. By following this logic.
```mermaid
graph LR
First;
```
```mermaid
graph LR
First-->Second;
```
Then linear Convolution (without FFT) is done. Convolving block 1 with block 3 will produce left channel. Convolving block 2 with block 4 will produce right channel.
These two blocks are then moved back to CPU and you can hear results.
Using this method you can change e.g. your impulse response in realtime and use other effects on it.
##
### Convolution Sizes
There is a menu where you can choose how big your convolution size is in seconds.
- 0.5, 1.0, 2.0, 3.0, 4.0
##
### Volume Knob
This knob is used to scale output volume.
##
###
## Known Issues
Sometimes there is some latency. \
Doesn't properly work inside juce audio plugin host. \
Currently supported buffersizes are 128 , 256 , 512 , 1024. \
Offline rendering doesn't work.
## What works
How to use it : [Video](https://youtu.be/P2fRFk7yA3U) \
Works in Reaper and Ableton 12.
## Hardware
NVIDIA GTX 1660 TI
## To Do
Add proper kernels using maximum number of threads for each buffersize. \
Find proper way to normalize output.
## Download (early build windows)
[Download](https://github.com/zeloe/RTConvolver/releases/tag/v.0.0.3)