FreeCalypso > hg > fc-audio-config

annotate aud-fcdev3b/README @ 14:ebdb8d68e157

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
aud-caramel: first-cut audio config for FC-HDS4
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 06 Nov 2021 04:28:43 +0000
parents b57c380d78e7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 spkr0 is the new (as of 2021-10) audio mode config for FCDEV3B
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 loudspeaker+microphone voice call kit. The other two configs are historical
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 and should no longer be used:
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 spkrmax config was my (Mother Mychaela's) concoction at the time when I tried
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 to use tiny cellphone-sized speakers, which were too quiet in the absence of
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 special mechanics and acoustics. It needs to be noted that setting a positive
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 speaker "calibration" gain in the Iota ABB with the volume control set to max
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 and with the waveform at full scale produces clipping instead of more Vpp
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 output, hence this approach is not really a solution.
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 mcsi config was an early method of entering MCSI digital voice mode, but this
b57c380d78e7 aud-fcdev3b/README: explanation of new vs. historical configs
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 method should no longer be used, as it is broken - use AT@VSEL=1 instead.