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}
27 <p class=
"p1"><span class=
"s1"><b>BAllPass
<span class=
"Apple-tab-span"> </span></b></span><b><span class=
"Apple-tab-span"> </span>All Pass Filter.
</b></p>
28 <p class=
"p2"><br></p>
29 <p class=
"p3"><b>BAllPass.ar(in, freq, rq, mul, add)
</b></p>
30 <p class=
"p2"><br></p>
31 <p class=
"p3"><b>in
</b> - input signal to be processed.
</p>
32 <p class=
"p3"><b>freq
</b> - center frequency.
</p>
33 <p class=
"p3"><b>rq
</b> - the reciprocal of Q.
<span class=
"Apple-converted-space"> </span>bandwidth / cutoffFreq.
<span class=
"Apple-converted-space"> </span></p>
34 <p class=
"p4"><br></p>
35 <p class=
"p3">The B equalization suite is based on the Second Order Section (
<b>SOS
</b>) biquad UGen.
</p>
36 <p class=
"p4"><br></p>
37 <p class=
"p3">note: Biquad coefficient calculations imply certain amount of CPU overhead. These plugin UGens contain optimizations such that the coefficients get updated only when there has been a change to one of
</p>
38 <p class=
"p3">the filter's parameters. This can cause spikes in CPU performance and should be considered when using several of these units.
</p>
39 <p class=
"p4"><br></p>
40 <p class=
"p3">see also:
<b>SOS, BLowPass, BLowPass4, BHiPass, BHiPass4, BPeakEQ, BLowShelf, BHiShelf, BBandPass, BBandStop
</b></p>
41 <p class=
"p2"><br></p>
42 <p class=
"p5">s.boot;
</p>
44 <p class=
"p6"><span class=
"s2">z = {
</span>// thru
</p>
45 <p class=
"p7">BAllPass
<span class=
"s2">.ar(
</span></p>
46 <p class=
"p5"><span class=
"Apple-tab-span"> </span><span class=
"s3">SoundIn
</span>.ar([
0,
1]),
</p>
47 <p class=
"p5"><span class=
"Apple-tab-span"> </span><span class=
"s3">MouseX
</span>.kr(
10,
18000,
<span class=
"s4">\exponential
</span>),
</p>
48 <p class=
"p5"><span class=
"Apple-tab-span"> </span>0.8,
<span class=
"s5">// rq
</span></p>
49 <p class=
"p5"><span class=
"Apple-tab-span"> </span>0.5);
<span class=
"s5">// mul
</span></p>
50 <p class=
"p5">}.play)
</p>
51 <p class=
"p5">z.release;
</p>
52 <p class=
"p8"><br></p>
54 <p class=
"p6"><span class=
"s2">z = {
</span>// like a bandpass
</p>
55 <p class=
"p5"><span class=
"Apple-tab-span"> </span><span class=
"s3">var
</span> sig;
</p>
56 <p class=
"p5"><span class=
"Apple-tab-span"> </span>sig =
<span class=
"s3">SoundIn
</span>.ar([
0,
1]), *
0.5;
</p>
57 <p class=
"p5"><span class=
"Apple-tab-span"> </span><span class=
"s3">BAllPass
</span>.ar(sig,
<span class=
"s3">MouseX
</span>.kr(
10,
18000,
<span class=
"s4">\exponential
</span>),
0.8) + sig.neg
</p>
58 <p class=
"p5">}.play)
</p>
59 <p class=
"p5">z.release;
</p>
