DtBlkFx (by Darrell Barrell) is a Fast-Fourier-Transform (FFT) based Virtual Sound Technology (VST) plug-in for use in audio software supporting such stuff.
It combines elements of distortion, filtering and synthesis in order to make you smile.
It has an easy to use interface and lets you do all kinds of things - examples are:
Brick-wall (sharp roll off) filtering
Harmonic based filtering
Various types of noise control
Frequency shifting
Something similar to vocoding
Many unique effects.
free vst plugin, pc.
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PSP VintageMeter (free plug-in VST, RTAS, MAS, AudioUnit for MAC and VST, RTAS and DirectX for PC hosts) provides professional VU and PPM metering for mono and stereo tracks. All parameters like integration times and reference levels are widely adjustable to make this free plug-in suitable for any application.
free plugin. pc, mac
Gonio2/3 is an Audio Vector Oscilloscope (Goniometer). It can give you a detailed picture of the relationships of a stereo signal. This is often used to watch for mono compatibility of a recording. Unlike a "normal" oscilloscope the image is rotated by 45° so if you have an identical signal on both channels you'll see a vertical line. If the signals are otherwise identical but with opposite phase a horizontal line is displayed. In a proper audio recording the major portion of the signal lies within a ±45 range in relation to the vertical axis. If there is a high portion of low frequency content the picture appears as floating connected lines whereas with more high frequency content there are floating points dominant.
Mono compatibility is important in all recordings (not only stereo but also multichannel). To give you an easy to use tool there is a correlation graph (phase meter) available (only Gonio3). It displays the cosine of the phase angle between the two channels. For stereo recordings the graph normally should lie in the range of "0 - 1". Levels < 0 indicate that there is "out of phase" content in the signal.
In Gonio3 the graph is auto scaled (beginning at -80dB) so that the picture always occupies the whole area. If you use the meter on channels with various levels you see the "whole" picture without having to turn scaling parameter everytime. When a signal goes above 0dB the display is limited and you will see a high portion of points at the upper/lower screen.
DirectX and VST plug-in formats
Exclusive: record the peak meter value and clip information as an automation curve (on both directX and VST platforms),
Simple and easy to use GUI and controls, close to usual music hardware interface.
Any Sample Rate supported,
Real Time Processing,
No latency,
Supports mono and stereo streams,
(DirectX only) : 32 bits Floating Point streams support, as well as 8 and 16 bits PCM streams.
MultiInspectorFree is a 31 band spectral analyzer designed to be used in a multitrack environment. Based on the technology of FaderWorks to handle multiple dependent instances of the same plug-in, MultiInspectorFree provides an easy way for simultaneous spectral analysis of several audio signals.
The first instance of MultiInspectorFree behaves like a standard 31 band spectral analyzer. Additional instances automatically send their spectral analysis result to all other instances of MultiInspectorFree. Every editor window of MultiInspectorFree shows the same content. Therefore, after opening all necessary plug-in instances it is sufficient to leave just one editor window open. The width and the color of the level bars are adjusted according to the current number of instances.
MultiInspectorFree incorporates a standard third octave frequency analyzer. The center frequencies of the bands are based on the ISO 266:1997 standard (20 Hz to 20 kHz). Pink noise will appear flat in the frequency spectrum.
MultiInspectorFree supports up to 4 instances at a sample rate of 44.1 kHz.