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class:: Blip
summary:: Band limited impulse oscillator.
related:: Classes/Impulse
categories:: UGens>Generators>Deterministic
Description::
Band Limited ImPulse generator. All harmonics have equal amplitude.
This is the equivalent of 'buzz' in emphasis::MusicN:: languages.
emphasis::Synth-O-Matic:: (1990) had an impulse generator
called blip, hence that name here rather than 'buzz'.
It is improved from other implementations in that it will crossfade
in a control period when the number of harmonics changes,
so that there are no audible pops. It also eliminates the divide in
the formula by using a 1/sin table (with special precautions taken for
1/0). The lookup tables are linearly interpolated for better quality.
warning::
This waveform in its raw form could be damaging to your ears at high
amplitudes or for long periods.
::
classmethods::
method::ar
argument::freq
Frequency in Hertz.
argument::numharm
Number of harmonics. This may be lowered internally if it would cause aliasing.
argument::mul
argument::add
Examples::
code::
// modulate frequency
{ Blip.ar(XLine.kr(20000,200,6),100,0.2) }.play;
// modulate numharmonics
{ Blip.ar(200,Line.kr(1,100,20),0.2) }.play;
::
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