I have another idea Last time I watch some channel about audio and subject was to improve audio signal for better sound quality using HDMI audio extractor
And questions is what if I connect cassette deck player with RCA to HDMI audio extractor and from audio extractor cable hdmi to amplituner
So from amplifier to audio extractor will be hdmi cable from audio extractor to cassette deck will be RCA
What do you guys think?
I think that you still have a lot of concepts that you aren't wrapping your head around. You are also reading some information that is well out of date. There are some pieces of information you've presented that are mixing data types up as well, which is not appropriate.
A HDMI audio extractor EXTRACTS audio from a HDMI source and gives you digital 5.1 audio for a speaker bar or older AV receiver which does not have a HDMI connection on it. Likewise, it can give you analog audio OUT to a receiver or system that needs stereo audio. It doesn't work the other way. You can't plug in a stereo source and get HDMI out of it. Plus, if you could, it would just be a analog to digital converter, which wouldn't make almost any sense in a typical home setup. Analog to digital converters absolutely exist, but they generally are very basic. They don't improve the analog audio or filter noise. Most don't have XLR inputs, but generic analog connections. Like this $70 model from Gefen...
Buy Gefen GTV-AAUD-2-DIGAUD - Analog Audio to Digital Audio Adapter featuring Analog to Digital Converter, RCA Analog Input, S/PDIF or TOSLink Output, Simple Operation, Compact Form. Review Gefen GTV-AAUD-2
www.bhphotovideo.com
There are professional analog to digital converters. There are also decent ones designed to be used with microphones for USB connectivity to a computer. These can range from under $100 to thousands of dollars depending on requirements... But NONE of them really improve upon the original analog audio.
Read that last sentence again! It's really critical.
Now, a device may have certain frequencies it reproduces. That would be measured in hertz (Hz) or kilohertz (kHz). This is different from data transfer rates, or audio compression rates.
MP3s are typically measured in kilobits per second (Kbs). They use a lossy compression method which can vary from about 64 to 320 kilobits per second. Many people can't distinguish between a CD and a 128Kbs MP3 file on average audio gear. Some people can.
CDs operate at a fixed data rate of 1,411Kbs. How is it that a MP3 at 128Kbs can sound the same to most people as a 1,411Kbs CD? First of all, because MP3s use compression to pack more data into the space they have available. Moreso, because we don't listen to digital audio, we listen to analog audio. This means our ears aren't perfect. Some are better, some are worse. A CD doesn't use any type of compression to save space. That wasn't really possible to do when the CD came to market many decades ago. It was considered a gold standard for audio fidelity at the time and many people considered, and still consider the CD to be lossless audio. It isn't though. It has a very high sampling rate, but it still is only taking samples of an analog waveform. There are newer forms of digital audio which have higher sampling rate with more bit depth. In some cases, those higher bitrate audio formats can sound better to some people.
But, the mass majority of people do not hear any audible difference between high resolution audio and CD audio. Or the difference between a good 128Kbs MP3 and CD audio.
This is all very circular and comes down to the same concept. Your ears can't hear a difference in almost any of these things. It is good not to just use garbage sources and lousy cabling and cheap speakers. But, it's also useless to get great speakers and a great source then put them into a lousy room. If you can't really hear the difference between a XLR and a RCA or a digital audio connection IN YOUR SETUP, then, like most of us, you're pretty normal. But, don't worry to much about the technical side of things if you aren't enjoying the audio because of it. Just enjoy the music.
