On 19-7-2013 11:35, Amaury Pouly wrote: > Hi all, > I would like to bring back some thought on the volume handling and the > radio. ... > 2) Handling of radio volume > > This is nothing new but very annoying: some targets have limited > amplifying range when routing from radio. It appears that for some chips > like SI4700, the default volume of the chip is very high and thus the > SoC amplifier cannot attenuate the volume sufficiently, resulting in the > overall volume to be very high. Example (value might be wrong): SI4700 > configured with 20dB amp, imx233 amp configured at -58dB result in max > attenuation of -30dB ! > > I think the proper way to do this is to enhance the radio interface with > a volume setting. Indeed most radio tuners have a volume setting. We > could basically need to following attributes: > - volume (set/get) > - volume steps (get) [not sure it's needed] > - min/max (get)
Sounds like a good idea to me. This would also make radio easier to use for voice-users. Audio playback is normally attenuated to allow the voice to be heard (as I understand it). This is currently not the case for radio, making it basically impossible to use radio with voice. Some tuners allow quite fine-grained volume, others allow only very crude steps. Kind regards, Bertrik
