Tutorials and Examples for Nyquist programming
Audacity includes an excellent “Change Tempo” effect which can stretch the length of the selected audio without altering the pitch. The effect includes the ability to specify the required new length, but this option is not available when using the effect in a Macro, or with Scripting. Setting the target length in a Macro Audacity … Continue reading Stretching audio to length
The most basic way to copy a list or an array is simply to assign a new variable with SETQ or SETF, but this may behave in unexpected ways. Let us look at an example: Try running the above in Audacity’s Nyquist Prompt effect (use the Debug button to see the output), and you may … Continue reading Copying lists and arrays
A simple “tuning fork” plug-in for Audacity, specifically for tuning a ukulele. This plug-in just generates a tone of the specified note, which is basically what a tuning fork does, except that a real (mechanical) tuning fork is restricted to just one frequency, whereas this plug-in allows you to select the required note. Ukuleles are … Continue reading Ukulele Tuning Tones
What is a decibel? Why are dB sometimes negative? How loud is one dB? In this article we examine what dB means in layman’s terms…
Sometimes we may want to fade-in or fade-out an effect rather than have it start and end suddenly. This article looks at how we can do this automatically within an effect. The way that we would do this manually is by duplicating the track, applying the effect to the duplicate, then crossfading the two tracks … Continue reading Fading an effect in and out
Since the release of Audacity 3.0.3, the Audacity team have made Audacity for Linux available as an AppImage, in addition to the usual binaries for Windows / macOS and source code. This is good news for Linux users, though there are currently some caveats that users need to be aware of. What is an AppImage? … Continue reading Audacity AppImage (Linux)
This plug-in can be helpful in situations where you have a project that has a lot (possibly hundreds) of labels, and you want to locate one specific label quickly by searching for the label text. While it is perfectly possible to scroll through the Label Editor window and look for the label text, the Label … Continue reading Find Label (plug-in)
“Variables” are a fundamental concept in programming. They provide a way to refer to a value, even if the value is not known. For example, if we have some apples, but we don’t know how many apples, we can refer to “the apples” without knowing how many. If we have 5 apples, then “the number … Continue reading Nyquist Programming – Variables and data types
Before diving into the Nyquist programming language, we will first take a quick look at what programming is. A “program” is a set of steps to produce a result. Typically when we talk of programming we mean programming a computer, but in a broader sense we can consider any ordered set of steps to produce … Continue reading Nyquist Programming – An Introduction
Introduction “Assertions” (or simply “Asserts” are commonly used in many programming languages to help developers read and understand code, and to help to detect possible defects (bugs). An assert is usually a predicate that tests a variable in the program and returns a boolean (true / false) value. In common English, it is like saying: … Continue reading Assertions