|File size:||234 KB|
Publisher description for FreqTweak
FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra. It is an extremely addictive audio toy, but I hope it has value for serious audio work too (sound design, etc). The spectrum Analysis is pretty useful in its own right. Features: FreqTweak supports manipulating the spectral filters at several frequency resolutions (64,128,256,512,1024,2048, or 4096 bands) depending on your needs/resources. Overlap and windowing are also selectable. The GUI filter graph manipulators (and analysis plots) have selectable frequency scale types: 1x and 2x linear, and two log scales to help with modulating the musical frequencies. Filters can be linked across multiple channels. The plots are resizable and zoomable (y-axis) to allow precise editing of filter values. The current processing filters are described below in the order audio is processed in the chain. Any or all of the filters can be bypassed. The state of all filters can be stored or loaded as presets. Spectral Analysis -- Multicolor scrolling-raster spectrogram, or energy vs. freq line or bar plots... one shows pre-processed, another shows post-processed. EQ Cut/Boost -- Your basic multi-band frequency attenuation. But you get an unhealthy number of bands... Note that this EQ is not intended for mastering purposes, it allows for (and doesn't protect against) highly irregular filtering. Two versions, one does only frequency gain cut, the other boost. Pitch Scaling -- This is an interesting application of Sprengler's pitch scaling Algorithm (used in Steve Harris' LADSPA plugin).