Philtre (audio device)
Encyclopedia
Philtre is a now-discontinued Alesis
Alesis
Alesis is a company based in Cumberland, Rhode Island, that designs and markets electronic musical instruments, digital audio processors, audio mixers, digital audio interfaces, recording equipment, drum machines, professional audio and electronic percussion products...

 desktop
Desktop
Desktop refers to the surface of a desk.The term has been adopted as an adjective to distinguish office appliances which can be fitted on top of a desk, from larger equipment covering its own area on the floor....

 effects device
Device
-Computing and electronics:* A component of personal computer hardware* Peripheral, any device attached to a computer that expands its functionality* Electronic component-Other uses:* Appliance, a device for a particular task* Device...

 that can do the following:

Select either low pass
Low pass
Low Pass may refer to*Low Pass, Oregon*Low-pass filter* Low Pass in Mountain passes in Montana...

, high pass
High Pass
High Pass may refer to:*High Pass *High Pass *High-pass filter...

, band pass, low pass alias, or any combination as filter
Filter
- Chemistry, engineering and materials :In chemistry, engineering, or household usage, a device to separate mixtures. See:* Filter , critical components of both freshwater and marine aquaria...

 types. Five different modulation
Modulation
In electronics and telecommunications, modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted...

 waveform
Waveform
Waveform means the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.In many cases the medium in which the wave is being propagated does not permit a direct visual image of the form. In these cases, the term 'waveform' refers to the shape of a graph...

s can be selected, each of which can be beat-synchronized. The Reset Mod button will reset the phase of the LFO. A Steep button switches between 4- and 6-pole filters.
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