equalizer | audio analysis tool for real-time | Data Visualization library

I am building an Android App which needs to create several vertical sliders in the same page for music equalizer adjustment, but I can only find horizontal sliders from the official material design documents.

I try to implement default slider from official documents and rotate it with modifier and it works, but the problem is that I am not able to adjust the height now using Modifier.

https://imgur.com/a/G19PsM6

To give a bit of context, i am trying to implement in matlab from scratch the following signal diagram, a Feedback Delay Network (FDN). pic: FDN

With an appropriate matrix, indifferent to delay lengths, virtually white noise comes out when fed a dirac impulse.

I've managed to do this in code, but my goal is another and hence my question. I want to apply a filter h(z) after each delay line z^-m. pic: h(z)

More specifically, i want to apply a third-octave cascaded graphic equalizer after each delay line. The purpose is to create frequency dependent attenuation on the whole structure, and consequently delay dependent. I've successfully designed the filter in the form of SOS, but my problem is: how do I apply it within the structure? I assume to use sosfilt() somewhere with what I have, but I'm not sure.

I haven't reduced the order of the system for sake of purpose. The order is 16 (16x16 matrix, 16 delay lines, 31x16 biquad filters)

The first code refers to the lossless FDN, safely runnable which generates white noise. I have commented my failed attempt to introduce the filtering in the loop saying: % Filtering

Unfortunately, I can't post all GEQ entries, but I'll leave 8 in the end corresponding to the first 8 delays.

So, the question is how do I code to filter the white noise, implementing frequency dependent attenuation in the whole FDN structure. Also, although it may be computationally inefficient, I'd prefer to apply this without higher level functions and based on what I already have, i.e: applicable in GNU Octave

Edit: Assuming you have to apply the bandpass 2nd order filtering sample by sample using the difference equation, how would you recursively do it for 31 bands in series? One is shown in the second code section.

I was playing with AVAudioEngine to use it in an app. I am changing pitch and equalizer (gain) parameters with sliders while music was playing.

Pitch works but equalizer is not working. I could not find the cause.

We are working on a project which allows us to record some sounds from a microphone with a 5k Hz sample rate with some Low-Pass filter & HighPass filter.

What we are using

We are using AvaudioEngine for this purpose.

We are using AVAudioConverter for downgrading the sample rate.

We are using AVAudioUnitEQ for the LowPass & HighPass filter.

Code

I am currently working on an equalizer which takes the input of a microphone in rust using cpal as audio backend.

I am capturing the raw data and sending it to another thread like this:

I'm trying to make an equalizer animation and would like these lines to animate from the bottom of the containing DIV as opposed to animating from the top like they are now.

I am a shiny newbie. I am trying to make an app where the user can move the slider and select the values, like in this sound equalizer example or colour picker example. But my app places the slider inputs on top of each other. Can someone help? Codes:

I am working on an audio visualizer for the web that also lets the user "tune" the raw audio signal visualizer to a frequency. This is a feature of many hardware oscilloscopes. Basically, when a user centers on 440Hz and I have a 440Hz sine wave, the wave should stay still on the canvas and not move left or right. My plan was to move the graph to the left according to the frequency (440Hz = 1/440s to the left per second because the wave should repeat every 1/440s), but this does not work as it seems.

I could not find the units used by the Audio Analyzer Node's time domain data. I guess that it's in milliseconds, but I am not certain.

I'm trying to figure out how to remove duplicates based on the url, as the aggregate query can match the same document twice if say "APPL" and "TSLA" are in stocks and included in the same document.