Add peak operator.

[smimram]

Adapt RMS operator so that it can also output peak, fixes #364.

[toots]

Looks good to me!

[liquidpeter]

thanks for this!
It works fine.
BR, Peter

set("server.telnet", true)
set("server.telnet.port",9876)
set("server.telnet.bind_addr","127.0.0.1")

radio=input.http(id="input.http", "http://ice.rosebud-media.de:8000/88vier-low");

duration = interactive.float("duration", 1.)

rs = rms.stereo(duration=duration, radio)
r = fst(rs)
radio = snd(rs)

ps = peak.stereo(duration=duration, radio)
p = fst(ps)
radio = snd(ps)

def measure(_) = "#{fst(r())} #{snd(r())} #{fst(p())} #{snd(p())}" end
server.register("measure", measure)

out(radio)

[smimram]

Great! :)