“Steganography” from the Greek steganós (concealed) and graphia (writing), is the practice of hiding information within another message or physical object. It could be described as a form of “hiding in plain sight”. There are several different stenanogrphic techniques relating to audio. This article, and the associated plug-in uses one specific technique called Amplitude Modulation … Continue reading Steganography and “Silent Subliminals”
The De-Clicker and De-Esser plug-ins are popular with some audiobook authors. The purpose of the De-Clicker is to remove mouth clicks and similar clicky sounds from the recording, while De-Esser is for reducing excessive sibilance (hissy “s” and “shh” sounds). These plug-ins have horrible code and are only available on the understanding that there is … Continue reading De-Clicker and De-Esser
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
Sometimes we may want to be able to quickly find extreme peaks in a recording so that we can treat them in some way. Often we can find the peaks easily by just looking at the waveform. In the example below, we can clearly see that there is a large peak in the left channel … Continue reading Label Peaks
Audacity has the ability to export label tracks as a text file, and/or import labels from a text file. More information about this is available in the Audacity manual. A limitation of this feature is that it is not available to use in batch processing. There is a macro command ImportLabels: but it only opens … Continue reading Import Labels
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)
This plug-in generates a tone at specified intervals into an existing track. This process is sometimes used as a watermark or spoiler to deter unauthorised copying / fraudulent claims of copyright. Before deciding to use watermarks / spoilers, take a few moments to consider: Should I add spoilers to my audio? Types of watermark There … Continue reading Beeper.ny (audio spoiler)
Whether synchronising an audio recording with a video recording, or synchronising recordings made from each side of a zoom / Skype / telephone conversation, synchronising multiple recordings is a fairly common task. To aid accurate synchronisation, a clapperboard (or simply a couple of hand claps) at the beginning of the recording can provide clear visual … Continue reading Align Tracks
Audacity envelopes provide a useful, non-destructive way to modify the volume of the audio, but are rather fiddly to use. Due to the lack of numeric input, it’s virtually impossible to set precise values manually. This plug-in provides a simple way to add envelope control points with precise values. Download Installation: Installation is in the … Continue reading Envelope Control Points
This is an experimental “proof of concept” plug-in for FM encoding and decoding. It was written as a bit of fun for the Audacity community – a competition in September 2016 for Audacity users, developers and support crew. The plugin can be download here: Installation Instructions: For the current version of Audacity, please see HERE … Continue reading FM Encoder Decoder