AW(Andre): [sdiy] analogue phase modulation

[JH.]

----- Original Message ----- 
From: "Haible, Juergen" <juergen.haible at siemens.com>
To: "JH." <jhaible at debitel.net>
Sent: Thursday, January 11, 2007 10:13 AM
Subject: AW(Andre): [sdiy] analogue phase modulation


> This might or might not answer your question 

Excellent!
Answers my question, and beyond.

> DX7 
> 10 0.003
> 20 0.013
> 30 0.031
> ...
> 95 9.263
> 99 13.119


Would be interesting to know the OL number for MI of 3.14, if it's
explicitly given in that table.
But even without that, it confirms Eric's hint that "reasonable" OL
levels mean surprisingly small MI.


> The modulation index is defined on page 56 as delta_f / f_m where
> delta_f is the frequency deviation above and below the average
> frequency of the carrier and f_m is the modulating frequency.

... and that _relative_ frequency deviation (delta_f / f_m) is
identically equal to the _absolute_ phase deviation, isn't it? So those
same MI numbers directly describe what I've been looking for: the phase
excursion (in radiants), caused by the modulation.

JH.