Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: iPod volume capping and euPod, iMod, etc (Read 2011 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

iPod volume capping and euPod, iMod, etc

Does anyone at HA have specific info regarding exactly how iPods are volume-capped?

The two scenarios I see are

1. Capping is done similarly to how EQ is performed - digital data is modified (in this case, scaled).
2. Capping is done by limiting the maximum post DAC analog gain stage.

The analog gain stage in the codec just ahead of the headphone amp is programmable from -73dB to +6dB in 1dB increments, and would seem to be the easiest and most power efficient place to perform the cap. Can anyone confirm this?