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mathertel / Radio

An Arduino library to control FM radio chips like SI4703, SI4705, RDA5807M, TEA5767.
http://mathertel.github.io/Radio
BSD 3-Clause "New" or "Revised" License
297 stars 89 forks source link

Any way to prevent the audio from muting when seeking/changing frequency on RDA5807M? #44

Closed doctea closed 3 years ago

doctea commented 3 years ago

I'd like to be able to hear what I'm scanning through.

Is this even possible in some sort of test mode on the chip, or is it just not possible at all...?

doctea commented 3 years ago

To answer my own post -- I was under the impression this should be possible by disabling the 'soft mute', but I couldn't seem to make it work at all. And then my RDA5807M board stopped working entirely so I had to give up on that one!

However I then bought a TEA5767 board, and this seems to work fine and doesn't have a forced-on 'softmute' function, so I can use this to scan through the frequency range with audible feedback and is pretty much doing what I required.

deladriere commented 2 years ago

Hi @mathertel I have the same need. Any ideas if this is even possible. Softmute ON or OFF doesn't seem to do anything

mathertel commented 2 years ago

This is a RDA5807M chip specific behavior that cannot be changed. I guess they have implemented this to avoid "bad noise" on the output.

deladriere commented 2 years ago

thanks a lot! what is the usage of the soft mute? can you see a difference with or without it?