Volume levels are altered by broadcasters to attract your attention during ad breaks.
The device you need is called an audio compressor, or automatic volume controller (AVC).
Take the audio output from the TV via the headphone socket to cut out the TV speaker. Insert compressor in series with aux input on an audio amp and listen via home cinema system.
I think that would be about the sound level while watching a TV. I think housing codes are set to maintain a 45 dbA level sound-proofing for the interior of homes.
Compare Sound power, Sound pressure, and Sound intensity. All share as level the same unit of measure: the decibel (dB). The term "sound level" is commonly substituted for each. As characteristic impedance of air we use the round value Z = 400 N·s/m³ (Pa·s/m). Then the "sound level", that is the sound pressure level Lp and the sound intensity level LI is exactly the same as a decibel value. The sound power or acoustic power is the sound energy constantly transferred per second from the sound source. A sound source has a given constant sound power that does not change if it is placed in a different room environment. Sound power is a theoretical value that is not measurable. It is calculated and expressed in watts and as sound power level LW in decibels. A sound source produces sound power and this generates a sound pressure fluctuation in the air. Sound power is the distance independent cause of this, whereas sound pressure is the distant-dependent effect.
First silent movies had no sound, but tv had always sound from the start.
TV always came with sound. There was never a "silent" TV. In fact by 1928 movies had sound.
I Doubt it Epilepsy is a fit triggered by flashing lights not anything to do with sound A music video could trigger a fit but most TV is filtered to avoid Epilepsy
Sound TV was created in 2005.
Assuming you are connected to the audio output connectors on the TV, you might have to turn up the volume of the TV to get any audio to appear at the output connectors. If it is a high end set, go into the audio menu and switch the audio output to FIXED. This will give you full level audio at the connectors and then turn down the sound from the TV speakers. Don't use the internal speakers when using the sound system.
hitachi tv has sound no picture
There is no inventor. Before there was sound in the radio.
Connect the TV to a stereo unit and listen to the sound through the stereo.
If your sound is out it could be with your connection to the TV or your TV settings.
Sound - 1966 TV was released on: USA: 1966