Search found 10 matches

by Iainmf
Mon Jul 10, 2017 5:31 am
Forum: DSP
Topic: Downsampling for saving CPU
Replies: 11
Views: 49951

Re: Downsampling for saving CPU

Here is a band-limited hard limiter with the gain reduction calculated every 16 samples.
by Iainmf
Fri Jul 07, 2017 10:55 am
Forum: DSP
Topic: Downsampling for saving CPU
Replies: 11
Views: 49951

Re: Downsampling for saving CPU

Actually, now that I think about it, it might be possible depending on the layout of your compressor. You could do calculate gain reduction every 'x' samples, as long as you are calculating before the envelope follower and your envelope follower is running at the sample rate. The envelope follower ...
by Iainmf
Fri Jul 07, 2017 2:22 am
Forum: DSP
Topic: Downsampling for saving CPU
Replies: 11
Views: 49951

Re: Downsampling for saving CPU

Another thing to consider is that if you can 'downsample' you will also have to 'upsample'.

If you do use 'hop' to process every 16 samples, then potentially you will end up with an output that has steps. If you are trying to do a smooth gain change you don't want sudden jumps every 16 samples. You ...
by Iainmf
Tue Jun 27, 2017 2:19 am
Forum: General
Topic: Stereo Imager Help
Replies: 1
Views: 8287

Re: Stereo Imager Help

I am not familiar with FLStudio but I have attached a schematic with a more normal Mid/Side stereo width adjustment arrangement.
by Iainmf
Mon Jun 26, 2017 12:59 pm
Forum: DSP
Topic: Reducing aliasing of waveshaping using convolution
Replies: 13
Views: 58879

Re: Reducing aliasing of waveshaping using convolution

I've played around with pre-filtering with a low-pass filter before the waveshaping. The idea is that the content in the top octave or so will be masked by the harmonics of the distortion and the ear is not very sensitive in this range anyway. You could think of it resampling to half the sample rate ...
by Iainmf
Sun Jun 25, 2017 2:31 am
Forum: User Examples
Topic: K2 - Peak Compressor
Replies: 42
Views: 137869

Re: K2 - Peak Compressor

Hi,


Thanks. Using the HOLD function gives interesting results.
To my mind a 'dual pass' mechanism will give the same result as a 'single pass' mechanism with doublt the 'HOLD' time, if hold is long enough to flatten the sine wave shape.

I thought that too, but 2 pass seemed better when I tested ...
by Iainmf
Thu Jun 22, 2017 6:53 am
Forum: User Examples
Topic: K2 - Peak Compressor
Replies: 42
Views: 137869

Re: K2 - Peak Compressor

Have you considered adding a 'hold' element to help smooth ripples?

I've added a hold section into your test schematic so you can see what it does.

Through some experimentation, I have found '2 pass' of a short peak hold time better at reducing ripples than a single longer hold time.

Edit: there ...
by Iainmf
Tue Jun 13, 2017 4:08 am
Forum: DSP
Topic: Crazy look ahead limiter.
Replies: 4
Views: 25272

Re: Crazy look ahead limiter.

martinvicanek wrote:Hi there,
here ya go, stable running average. BTW you'd get better response if you tidy up your schematic before posting, ;)


Thanks!

And you are quite right I should have tidied up my schematic. Sorry about that everybody.

Here is the latest version of my limiter. Nice and tidy this time.
by Iainmf
Tue Jun 06, 2017 11:27 am
Forum: DSP
Topic: Crazy look ahead limiter.
Replies: 4
Views: 25272

Re: Crazy look ahead limiter.

Hello Iainmf,

Very clever and already working quite well. Keep up the great work and can not wait to see the finished product. Also hope to lots more cool stuff from you in the future.

Take care, BobF.....

Thanks.

I made some improvements but there was a fundamental problem with detecting the ...
by Iainmf
Thu May 25, 2017 11:29 am
Forum: DSP
Topic: Crazy look ahead limiter.
Replies: 4
Views: 25272

Crazy look ahead limiter.

Hi All,

I am new here and trying to get familiar with Flowstone.

One of my projects is this Frankenstein's monster of limiters. I figured that if you can do very quick gain changes when the signal is at or very close to zero it would be quite transparent. So I have created a limiter that measures ...