audacity VS portmaster

#5467 Fix 24-bit recording.

The time stretch algorithm is implemented in https://github.com/audacity/audacity/blob/master/libraries/l... particularly functions _time_stretch and _process_hop. It looks to me like a classic phase vocoder with vertical phase coherence (c.f. https://en.wikipedia.org/wiki/Phase_vocoder).

The basic idea is this. For a time-stretch factor of, say, 2x, the frequency spectrum of the stretched output at 2 sec should be the same as the frequency spectrum of the unstretched input at 1 sec. The naive algorithm therefore takes a short section of signal at 1s, translates it to 2s and adds it to the result. Unfortunately, this method generates all sorts of unwanted artifacts.

Imagine a pure sine wave. Now take 2 short sections of the wave from 2 random times, overlap them, and add them together. What happens? Well, it depends on the phase of each section. If the sections are out of phase, they cancel on the overlap; if in phase, they constructively interfere.

The phase vocoder is all about overlapping and adding sections together so that the phases of all the different sine waves in the sections line up. Thus, in any phase vocoder algorithm, you will see code that searches for peaks in the spectrum (see _time_stretch code). Each peak is an assumed sine wave, and corresponding peaks in adjacent frames should have their phases match.

https://github.com/audacity/audacity/releases

If you are able to build from source, you could download the latest source code, or the latest release version source code, and manually apply the patch.

FWIW: We'll be ditching the atlases for 3.4 most likely, in favor of having themes work like they do in source anyway: With individual PNGs for the icons and a Colors.txt containing all the color definitions. With that, custom themes would be much easier to author and also would stop breaking every time we introduce a new icon.

https://github.com/audacity/audacity/issues/4639 this bug mentions everything, I guess it's Audacity after all. To be fixed in 3.3.2

No there isn't. I searched in vain for a workaround, and then checked the Audacity issues and found this: https://github.com/audacity/audacity/issues/3385

There's a very good relatively new open-source GUI firewall app like this called Portmaster:

https://safing.io/

It's available for Windows and Linux

You can get your own firewall app. Portmaster by safing.io lets you open and close what ever ports you want on your windows system

amazing work OP! what's the difference between zen and portmaster? :) i would like to compare options to see which one fits my needs the best way

For Context: Technical Introduction from https://github.com/safing/portmaster#technical-introduction

Portmaster is a privacy suite for your Windows and Linux desktop.

Base Technology

- Portmaster integrates into network stack using nfqueue on Linux and a kernel driver (WFP) on Windows.

- Packets are intercepted at the raw packet level - every packet is seen and can be stopped.

- Ownership of connections is found using eBPF and `/proc` on Linux and a kernel driver and the IP Helper API (`iphlpapi.dll`) on Windows.

- Most settings can be defined per app, which can be matched in different ways.

- Support for special processes with weird or concealed paths/actors:

--- Snap, AppImage and Script support on Linux

--- Windows Store apps and svchost.exe system services support on Windows

- Everything is 100% local on your device. (except the SPN, naturally)

--- Updates are fully signed and downloaded automatically.

--- Intelligence data (block lists, geoip) is downloaded and applied automatically.

- The Portmaster Core Service runs as a system service, the UI elements (App, Notifier) run in user context.

- The main UI still uses electron as a wrapper :/ - but this will change in the future. You can also open the UI in the browser

Feature: Secure DNS

- Portmaster intercepts "astray" DNS queries and reroutes them to itself for seamless integration.

- DNS queries are resolved by the default or configured DoT/DoH resolvers.

- Full support for split horizon and horizon validation to defend against rebinding attacks.

Feature: Privacy Filter

- Define allowed network scopes: Localhost, LAN, Internet, P2P, Inbound.

- Easy rules based on Internet entities: Domain, IP, Country and more.

- Filter Lists block common malware, ad, tracker domains etc.

Feature: Network History ($)

- Record connections and their details in a local database and search all of it later

- Auto-delete old history or delete on demand

Feature: Bandwidth Visibility ($)

- Monitor bandwidth usage per connection and app

Feature: SPN - Safing Privacy Network ($)

- A Privacy Network aimed at use cases "between" VPN and Tor.

- Uses onion encryption over multiple hops just like Tor.

- Routes are chosen to cover most distance within the network to increase privacy.

- Exits are chosen near the destination server. This automatically geo-unblocks in many cases.

- Exclude apps and domains/entities from using SPN.

- Change routing algorithm and focus per app.

- Nodes are hosted by Safing (company behind Portmaster) and the community.

- Speeds are pretty decent (>100MBit/s).

Portmaster itself is open source (https://github.com/safing/portmaster)

Then install https://safing.io/ (Portmaster); it's free.