[music-dsp] RE:

[Jon Watte]

> 1) a confirmed circuit of an equaliser.
> Is it just a A-D converter linked with a buffer linked with a band pass
> filter linked with a summing amplifer (to link all the channels) and then
> finally linked to a D-A converter?

In its simplest form, yes. The design of the band pass filter bank is by no
means trivial, though.

> 2) How many channels shall a graphic equaliser have?

As many as you can possibly cram into the available hardware and still have
good-sounding glitch-free performance, with straight phase response across
the range.

> 3) What is the internal digital format when a A-D conversion takes place?

Typically, linear integer PCM, although I'm sure there's other converters
out there (mu-law or whatnot).

Cheers,

			/ h+


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