On 8/17/2016 08:45, Bill Somerville wrote: > We use 16-bit audio so the dB range is ~90 so that means +30dB on the > thermometer indicator is ~ -60dBFS. It also means there is ~30dB > headroom off the top of the thermometer indicator.
Does the input gain slider actually affect anything other than the level readout? I recall Joe saying that the decoder always uses the raw PCM data. Though I don't know fortran very well skimming the symspec routine suggests that only the readout is affected. If it doesn't affect decodes then is there some other purpose for its existence? I've run into a great many operators who are confused or mistaken about it doing more than it actually does. Many see that the manual says to adjust the levels to 30dB and then do so by changing the slider rather than the RF gain or analog attenuation, which of course doesn't help if the audio is already clipping. It might make sense to give the input readout a makeover in 1.8 to resolve this confusion and make it intuitive where the "sweet spot" is. -- mike NF4E ------------------------------------------------------------------------------ _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
