@celander
You again misinterpret what I said. I said even on my phone all the jitter values with the test tone were audible, except one of them. So, I invited Steve to take the test with the music samples to see if he could hear it. I never suggested that if I couldn’t hear it on my phone, that it wasn’t audible. |
Could do without the political references. Everyone enjoy some good groves this evening and be thankful for our many blessings. |
Julian,
Yep, I spend my evenings enjoying test tones on my audio system.
I correctly understood you stating that you could not discern the jitter level differences with authentic music in the stream. And you then concluded what I stated in my previous post. |
I love threads like this . People telling you what you can and can not hear. Even though they have never listened to your system . And then they quote a test that they didn’t hear either . That is followed by the phrase “ Placebo Effect “. So when you throw out that rationale, it’s called the “ Bullshit Effect “. Sometime that’s followed by the “ Butthurt Effect “, which leads to the “ Get Even Effect “. Think I’ll go outside and play ..... |
As one person noted, a digital cable actually carries an analog signal. However, the magic is the software. When a digital signal is sent it is sent with what are called stop bits and a checksum. The hardware at the other end recalculates these values and compares them. If they don’t match, it requests the sender to re-send it. This way it is VERY rare, and i mean VERY rare for an incorrect packet to be get by this protocol.
At both ends the data is buffered (stored) to accommodate a fair number of error/resend cycles. After all the transmission speed is MUCH higher than required for high definition audio or even HD video. If you have a LOT of errors, then you will run out of buffered data and get ’skipping’ or some other sort of artifact.
If you find that cables made a difference, then you either had defective cables or ones that were insufficiently shielded, allowing enough errors to empty the buffer. We are not talking about dropping bytes or getting bit-errors here. This is about timing inaccuracies. The timing of the digital signal must be extremely accurate, from word to word, in order for the D/A to reproduce a low-distortion waveform. Steve N. Empirical Audio |
