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Raspberry Pi Forum How to improve the audio output for a (too) flat screen TV?
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How to improve the audio output for a (too) flat screen TV?

Former Member
Former Member over 11 years ago

Modern flat screens of digital TVs are getting shallower.
So there will be less and less room for speakers (LS) of sufficient quality.
One solution is to connect external LS to the TV.
But that requires an "AV receiver", which for example in a kitchen TV is overly expensive.
A cheaper solution might be possible with the RaspberryPi complemented by a Wolfson audio card? My question is how to achieve this? Does anyone have experience in this application?
By Consumer Electronics Control (CEC) along with HDMI ARC (Audio Return Signal) the TV remote will switch inputs, change channels, together with setting the audio volume.



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  • Former Member
    0 Former Member over 11 years ago

    I had the same recently and got one of these very cheap SPDIF->RCA converters Digital Optical Coaxial Toslink SPDIF to Analog RCA L/R Audio Converter Adapter | eBay.  which runs off 5V, at < 100mA.  Better would be a cheap amp with SPDIF integrated, but I haven't happened across that yet.  Raspberry Pi would be overkill for this job, I think.

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    Martyndavies thanks, can the SPDIF audio output be adjusted with means of the TV remote?

    If yes, perhaps ADAFRUIT website do have your cheap amplifier?

     

    I made a mistake my digital TV (Philips 22PFL3517H/12)  has only HDMI inputs and not a HDMI output, that is a pitty: I down't understand why this is missing?

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 11 years ago in reply to Former Member

    connectors cost money, as does the additional driver circuitry so on "Kitchen TV's" they skip it

     

    Peter

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  • Problemchild
    0 Problemchild over 11 years ago in reply to Robert Peter Oakes

    Seconded BOM cost is king .."How low can you go" is the motto of the day. That said I would try and find that 3.5mm Audio/headphone socket that is usually on the TV even if it's hidden around the back up and under!

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 11 years ago in reply to Problemchild

    yup, agree, that's why I suggested the standard headphone jack in the first place, never yet came across a TV without something for that. Simple, Easy, Cheap and it would require nothing more than a powered speaker

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 11 years ago in reply to Problemchild

    yup, agree, that's why I suggested the standard headphone jack in the first place, never yet came across a TV without something for that. Simple, Easy, Cheap and it would require nothing more than a powered speaker

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