4 Sep
2005
4 Sep
'05
8:34 p.m.
On Sunday 04 September 2005 22:12, Jussi Laako wrote:
On Sat, 2005-09-03 at 21:14 +0100, Dan Mills wrote:
Indeed!
The good stuff typically documents (for example) an analogue output level of
+4dBu for a sample 16db below full scale (or equivalently) that zero dBfs is
+20dBu. Note that the reconstruction filter overshoot will actually put the
peak output level up around +22dBu in this case!
With pro hardware that does not have integrated 'gain' controls (or at least
calibrates them), this is easy, otherwise an audio milivoltmeter (or 'scope)
and a simple program is required.
Regards, Dan.
I don't think this is right, a signal
**level** can be measured against a
known reference level, and for metering it is important to know what this
is, but a **gain** value is **always** unitless (You are multiplying a
signal which has units by a scalar value).
The thing here, is that I would like to know which actual output level
results when some given sample value is written with some gain setting.
Or I could determine actual input level by reading sample value and
input gain setting.